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The Go kernel for Jupyter notebooks and nteract.

License: MIT License

Go 95.57% TeX 2.20% Dockerfile 2.24%

go golang jupyter jupyter-notebook kernel gophernotes zeromq nteract data-science machine-learning

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pinkxa dwhitena leobcn agento3 campoy joshcheek mantyr briansorahan samuell thomasforrest-wf saftacatalinmihai alexander-manley tienhv fabian-z kevinburke dalbert isykes telnyx danward79 graphaelli kkeuning akovardin dongfanliang epsniff pharmbio pangacademy alexpangnewyork linearregression greatgreatgreg fulus06 golanglab happy-ferret rlugojr wdscxsj gocuntian voigt ridewindx jamestzeng kortschak 321dao zhangf911 morenoh149 vdt prateekpandey14 msteffen stephengrider karlmutch vdmasek spencerpark boyone itc3admin takluyver willingc sbinet-gonum sunicorn2011 huangjicong axelpoise chenjun3092 ricard0ff martinparrish www3838438 stone-sail bakkou shyamalschandra yuejack mu94w data-refinement xlk3099 t-0-m-1-3 justinohms changwenlong up1 monad-one jparklab lt186009 benluteijn gamunster vaddirajesh qulogic sdechi huang4207100 cestinger terminusdeus pingthingsio kai5263499 liuderchi aleksi arunkumarramanan mewbak lparth prattmic kamyu104 efeng1st yuanyewa fjxfork ares2013 awesomegolang mattlk13 yonomitt azurah

gophernotes's Issues

Magic commands don't work?

Ran the docker container version of this. Magic commands like %quickref and %lsmagic don't work.

Golang not appearing as an available kernel (possibly related to migrated ipython installation)

Environment: OSX 10.11.4, python 2.7.11, jupyter 4.1.0 installed via anaconda 4.0.0

My ~/.jupyter folder contains a single file named migrated, which I think was created when I installed anaconda (I had ipython previously installed).

Fix: Not until I copied the kernel.json file to my ~/.ipython directory (as opposed to ~/.local/share...) did the Golang kernel appear as an option under "New".

mkdir ~/.ipython/kernels/gophernotes
cp -r $GOPATH/src/github.com/gophergala2016/gophernotes/kernel/* ~/.ipython/kernels/gophernotes/

Invalid "for" loop causes panic

Executing a cell with an invalid "for" loop causes a panic and kills the Jupyter kernel:

Example 1 (invalid operator): "for i := 0; i < 10; ++i { ... }

Correct build error: syntax error: unexpected ++, expecting expression

Example 2 (forgotten semicolon): "for i := xi < 5; i++ { ... }

Correct build error: syntax error: unexpected {, expecting semicolon or newline

Output in shell running "jupyter notebook":

func_proxy.go:4:4: expected declaration, found 'for'
panic: exit status 2

goroutine 1 [running]:
panic(0x42d8640, 0xc4202cc0a0)
        /usr/local/Cellar/go/1.7/libexec/src/runtime/panic.go:500 +0x1a1
github.com/gopherds/gophernotes/internal/repl.(*Session).Eval(0xc4200b2370, 0xc42024ef80, 0x3c, 0xc4202e3488, 0xc420013580, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
        <$GOPATH>/src/github.com/gopherds/gophernotes/internal/repl/repl.go:374 +0x19a3
main.HandleExecuteRequest(0xc42046f6c0, 0x20, 0xc4200134a8, 0x8, 0xc42046f700, 0x20, 0xc4200134d0, 0xf, 0x0, 0x0, ...)
        <$GOPATH>/src/github.com/gopherds/gophernotes/execution.go:60 +0x2f3
main.HandleShellMsg(0xc42046f6c0, 0x20, 0xc4200134a8, 0x8, 0xc42046f700, 0x20, 0xc4200134d0, 0xf, 0x0, 0x0, ...)
        <$GOPATH>/src/github.com/gopherds/gophernotes/gophernotes.go:108 +0x2c7
main.RunKernel(0x7fff5fbff6ae, 0x59, 0x4493360, 0xc4200122a8)
        <$GOPATH>/src/github.com/gopherds/gophernotes/gophernotes.go:194 +0x842
main.main()
        <$GOPATH>/src/github.com/gopherds/gophernotes/main.go:25 +0xc6

Running on OS X 10.11.6, Golang 1.7

Previous print statement in custom defined functions linger

When a fmt.Println() statement or other print statement is included in a custom defined function, evaluating cells after defining the function results in duplicating the print statements.

zeromq22 isn't available

The README says to install zeromq22. If I run brew tap homebrew/versions && brew search zeromq here are the available options:

homebrew/versions/zeromq32                                                                homebrew/versions/zeromq405                                                               zeromq ✔

I don't know whether zeromq32 works or not, I'm doing the the rest of the install now.

Docker run command with docker for mac

On mac os X with docker for mac the command to run is docker run -p 8888:8888 --rm dwhitena/gophernotes jupyter notebook --no-browser --ip=0.0.0.0

It may be useful to update readme page

Repeated fmt.Println

Repeating fmt.Println from previous cells seems to be broken again.

I have zmq4 in my mac, and I did try to install gophernotes. but there is a error:
could not determine kind of name for C.ZMQ_HWM
could not determine kind of name for C.ZMQ_MCAST_LOOP
could not determine kind of name for C.ZMQ_RECOVERY_IVL_MSEC
could not determine kind of name for C.ZMQ_SWAP

so i installed zmq2.2 by homebrew. how can i Iinstall gophernotes with zmq2.2 ?

Update examples with new importing

Update the examples and screenshots to include importing without the : character and multiple imports per cell.

lots of "error: exit status 2" in the logs

The logs display a lot of "exit status 2" messages without any further explanation of what went wrong or compiled incorrectly. Examples (I think):

Passing an incorrect type as a function arg
Referencing a variable that does not exist
Calling a function in a package without importing the package

Looks like this in the terminal:

[I 10:43:33.504 NotebookApp] Kernel restarted: 750c7c9c-da9a-4a2c-a1c4-64e0dc9d5195
[I 10:43:33.661 NotebookApp] Adapting to protocol v4.0 for kernel 750c7c9c-da9a-4a2c-a1c4-64e0dc9d5195
error: exit status 2
error: exit status 2
[I 10:45:20.245 NotebookApp] Saving file at /base58.ipynb
error: exit status 2

On the other hand I did get this error message once:

/var/folders/dx/x6gx95t14n7bb3v878968fkm0000gn/T/952273222/func_proxy.go:4:4: expected declaration, found 'for'

Gettting `could not determine kind of name` ZMQ related errors

Hi @dwhitena, I ran into an issue, haven't been able to load the Go kernel yet, this might be the reason:

☻ go get github.com/gophergala2016/gophernotes

github.com/gophergala2016/gophernotes/Godeps/_workspace/src/github.com/alecthomas/gozmq

could not determine kind of name for C.ZMQ_HWM
could not determine kind of name for C.ZMQ_MCAST_LOOP
could not determine kind of name for C.ZMQ_RECOVERY_IVL_MSEC
could not determine kind of name for C.ZMQ_SWAP

I believe I have successfully followed all of the instructions with the exception of the messages above. gophernotes is listed under my bin directory. But when I open the gophernotes notebook, there is no Go kernel.

Could this be the reason and, if so, how to resolve it?

Support for auto-completion

Is there any way to get auto-completion support (via e.g. gocode)?

If not possible right now, I think it would be an awesome addition.

Lingering print statements

Expressions like fmt.Println linger in the session file when preceded by anything that would return an error from parser.ParseExpr. Need to evalExpr line by line a level up from here: https://github.com/gopherds/gophernotes/blob/master/internal/repl/repl.go#L157

`var` declarations can't be rerun

This code snippet:

:import "github.com/go-yaml/yaml"
:import "fmt"

var data = `
a: Easy!
b:
  c: "\xf6\xac"
`

type T struct {
        A string
        B struct {
                RenamedC []byte   `yaml:"c"`
        }
}

t := T{}

err := yaml.Unmarshal([]byte(data), &t)
if err != nil {
    fmt.Printf("error: %v", err)
}
fmt.Printf("%#v\n", t)

fails when you run it twice, with the following error:

gophernotes_session.go:36: data redeclared in this block
    previous declaration at /var/folders/dx/x6gx95t14n7bb3v878968fkm0000gn/T/842705212/gophernotes_session.go:19

Install locally on OS X

Getting the following on go get -tags zmq_4_5 github.com/gopherds/gophernotes not working :

could not determine kind of name for C.ZMQ_HWM
could not determine kind of name for C.ZMQ_MCAST_LOOP
could not determine kind of name for C.ZMQ_RECOVERY_IVL_MSEC
could not determine kind of name for C.ZMQ_SWAP

pkg-config: 0.28
zmq 4.1.5

Return image data to Jupyter front end?

This is obviously more of a question / feature request than an issue, but being able to do inline plotting and image display would be a big win for this package!

Maybe this issue can be a starting point for discussion (or feel free to point me to a more appropriate venue, if available).

Here's the problem as I understand it:

Jupyter implements a display_data message type that the kernel can use to communicate image data results to the front end. http://jupyter-client.readthedocs.org/en/latest/messaging.html#id3
Go has a flexible standard image library, and lots of non-core plotting libraries built on top of it.
The "gore-like" REPL that gophernotes uses to execute requests appears to know nothing about images (or anything at all but text produced by the Stringer interface)

Is there any way to bridge the impedance mismatch between 2) and 3)? If we can figure out a way to get image data out of the REPL, it seems pretty straightforward to implement the appropriate display_data messages to communicate it back to the frontend.

In the meantime the only real way to do this is to write images to files and then embed them within markdown cells. But this is suboptimal both because it's clunky and because such images do not update live when the code that generates them changes due to caching, etc.

Anyway, making this work seemlessly would be an incredibly cool enhancement to this already very useful package. I'm pretty new to Go and Jupyter, but a very experienced developer otherwise, so I'm willing to help-out wherever I can.

Thanks!

no Out[n] statements created from jupyter notebook

I downloaded the docker image and tried to follow along with a Hello World application (as i was having similar issues trying to just get it working via a miniconda installer (aka mini version of anaconda, python 3).

Jupyter works, starts up properly, but when i enter in the exact same thing as the README has for the hello world app, i don't see any Out's (except for the Sprintf() call).

See attached screen shot, i'm starting it as per the README:

$ docker run -p 18888:8888 -d dwhitena/gophernotes jupyter notebook --no-browser --ip=0.0.0.0
504f0499e5a8f57b202ddf06052fba45fe4cc2b3c10543315f4b395be33fe81c
$ docker ps
CONTAINER ID        IMAGE                  COMMAND                  CREATED             STATUS              PORTS                     NAMES
504f0499e5a8        dwhitena/gophernotes   "jupyter notebook ..."   9 minutes ago       Up 8 minutes        0.0.0.0:18888->8888/tcp   adoring_boyd
$ docker images
REPOSITORY             TAG                 IMAGE ID            CREATED             SIZE
dwhitena/gophernotes   latest              4cf782ddc225        6 months ago        979 MB

"import as" not take effect

run this in jupyter notebook

In [1]: import m "math"
In [2]: m.Sin(1)
# command-line-arguments
/var/folders/.../gophernotes_session.go:10: undefined: m in m.Sin

here's the spec

Kernel shows up but does not work

Hello,
I installed gophernotes following the instructions and now Go shows up as an option in my notebooks but when I try to execute something I get errors like

/var/folders/z5/zxdqxy_9595fs4z40wz496x40000gn/T/824132211/func_proxy.go:4:4: expected declaration, found 'IDENT' ...

I'm working with OS X El Capitan (10.11.6) and Go 1.9 (Issue was also present on 1.8)

More detailed instructions for getting docker-installed gophernotes started

I have completed the docker install for gophernotes, but (not being a regular docker user) I have no idea how to connect to the running container. Some instructions, or links to instructions if this is common knowledge, would be helpful.

error relative path /go/bin/gophernote

Hi..I'm having the following issue

404 GET /static/components/MathJax/MathJax.js?config=TeX-AMS_HTML-full,Safe&delayStartupUntil=configured (::1) 17.28ms referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=gophernotes
[E 12:14:57.069 NotebookApp] Failed to run command:
    ['/go/bin/gophernotes', '/run/user/1001/jupyter/kernel-9211b0e6-8d3c-4252-a796-0e84361e6ce2.json']
    with kwargs:
    {'stdout': None, 'stderr': None, 'start_new_session': True, 'stdin': -1, 'cwd': '/home/yo/Documentos/proyectos/clojure', 'env': {'PHPBREW_ROOT': '/home/yo/.phpbrew', 'PHPBREW_LOOKUP_PREFIX': '', 'PHPBREW_PHP': 'php-5.6.22', 'GDMSESSION': 'gnome-classic', 'MAIL': '/var/spool/mail/yo', 'SBT_OPTS': '-Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled  -Duser.timezone=GMT', 'SHLVL': '1', 'XDG_SESSION_TYPE': 'x11', 'SHELL': '/bin/zsh', 'MOZ_PLUGIN_PATH': '/usr/lib/mozilla/plugins', 'EDITOR': 'nano', 'QT_QPA_PLATFORMTHEME': 'qgnomeplatform', 'GTK_MODULES': 'canberra-gtk-module', 'HG': '/usr/bin/hg', 'USER': 'yo', 'TERM': 'xterm-256color', 'HOME': '/home/yo', 'ANT_HOME': '/usr/share/apache-ant', 'DESKTOP_SESSION': 'gnome-classic', 'GSETTINGS_SCHEMA_DIR': '/home/yo/data', 'GNOME_SHELL_SESSION_MODE': 'classic', 'GNOME_DESKTOP_SESSION_ID': 'this-is-deprecated', 'VTE_VERSION': '4203', '_': '/usr/bin/jupyter', 'SESSION_MANAGER': 'local/yo-pc:@/tmp/.ICE-unix/932,unix/yo-pc:/tmp/.ICE-unix/932', 'GOPATH': '/home/yo/Documentos/proyectos/go', 'PHPBREW_PATH': '/home/yo/.phpbrew/php/php-5.6.22/bin', 'XDG_SEAT': 'seat0', 'SSH_AUTH_SOCK': '/run/user/1001/keyring/ssh', 'DISPLAY': ':0', 'BROWSER': '/usr/bin/google-chrome-stable', 'PATH': '/home/yo/comandos:/home/yo/.phpbrew/php/php-5.6.22/bin:/home/yo/.phpbrew/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/home/yo/Documentos/proyectos/go/bin', 'PHPBREW_VERSION_REGEX': '^([[:digit:]]+\\.){2}[[:digit:]]+$', 'PWD': '/home/yo/Documentos/proyectos/clojure', 'OLDPWD': '/home/yo/Documentos/proyectos/clojure/parser', 'XDG_VTNR': '2', 'GDM_LANG': 'es_ES.UTF-8', 'LOGNAME': 'yo', 'WINDOWID': '29360134', 'XDG_MENU_PREFIX': 'gnome-', 'XDG_RUNTIME_DIR': '/run/user/1001', 'JPY_PARENT_PID': '14559', 'DBUS_SESSION_BUS_ADDRESS': 'unix:path=/run/user/1001/bus', 'XDG_SESSION_ID': 'c2', 'LANG': 'es_ES.UTF-8', 'AUTOJUMP_SOURCED': '1', 'PHPBREW_HOME': '/home/yo/.phpbrew', 'XAUTHORITY': '/run/user/1001/gdm/Xauthority', 'PATH_WITHOUT_PHPBREW': '/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl', 'AUTOJUMP_ERROR_PATH': '/home/yo/.local/share/autojump/errors.log', 'XDG_CURRENT_DESKTOP': 'GNOME-Classic:GNOME', 'WINDOWPATH': '2', 'XDG_SESSION_DESKTOP': 'gnome-classic', 'USERNAME': 'yo', 'PHPBREW_BIN': '/home/yo/.phpbrew/bin'}}

[E 12:14:57.071 NotebookApp] Unhandled error in API request
    Traceback (most recent call last):
      File "/usr/lib/python3.5/site-packages/notebook/base/handlers.py", line 457, in wrapper
        result = yield gen.maybe_future(method(self, *args, **kwargs))
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/handlers.py", line 62, in post
        kernel_id=kernel_id))
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
        kernel_name)
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
        self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 285, in wrapper
        yielded = next(result)
      File "/usr/lib/python3.5/site-packages/notebook/services/kernels/kernelmanager.py", line 87, in start_kernel
        super(MappingKernelManager, self).start_kernel(**kwargs)
      File "/usr/lib/python3.5/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
        km.start_kernel(**kwargs)
      File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 243, in start_kernel
        **kw)
      File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 189, in _launch_kernel
        return launch_kernel(kernel_cmd, **kw)
      File "/usr/lib/python3.5/site-packages/jupyter_client/launcher.py", line 123, in launch_kernel
        proc = Popen(cmd, **kwargs)
      File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
        restore_signals, start_new_session)
      File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
        raise child_exception_type(errno_num, err_msg)
    FileNotFoundError: [Errno 2] No such file or directory: '/go/bin/gophernotes'
[E 12:14:57.091 NotebookApp] {
      "Connection": "keep-alive",
      "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
      "Origin": "http://localhost:8888",
      "Content-Type": "application/json",
      "Host": "localhost:8888",
      "Accept-Encoding": "gzip, deflate",
      "X-Requested-With": "XMLHttpRequest",
      "Referer": "http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=gophernotes",
      "Accept-Language": "es,en-CA;q=0.8,en;q=0.6",
      "Content-Length": "80",
      "Accept": "application/json, text/javascript, */*; q=0.01"
    }
[E 12:14:57.092 NotebookApp] 500 POST /api/sessions (::1) 169.37ms referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=gophernotes
[W 12:16:00.779 NotebookApp] 404 GET /static/components/backbone/backbone-min.map (::1) 2.53ms referer=None
[I 12:16:56.976 NotebookApp] Saving file at /Untitled.ipynb
[W 12:17:38.556 NotebookApp] 404 GET /static/components/MathJax/MathJax.js?config=TeX-AMS_HTML-full,Safe&delayStartupUntil=configured (::1) 3.57ms referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=gophernotes
[E 12:17:39.757 NotebookApp] Failed to run command:
    ['/go/bin/gophernotes', '/run/user/1001/jupyter/kernel-c91df6b9-3cdf-4613-ad84-bd6bfc8fe9e9.json']
    with kwargs:
    {'stdout': None, 'stderr': None, 'start_new_session': True, 'stdin': -1, 'cwd': '/home/yo/Documentos/proyectos/clojure', 'env': {'PHPBREW_ROOT': '/home/yo/.phpbrew', 'PHPBREW_LOOKUP_PREFIX': '', 'PHPBREW_PHP': 'php-5.6.22', 'GDMSESSION': 'gnome-classic', 'MAIL': '/var/spool/mail/yo', 'SBT_OPTS': '-Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled  -Duser.timezone=GMT', 'SHLVL': '1', 'XDG_SESSION_TYPE': 'x11', 'SHELL': '/bin/zsh', 'MOZ_PLUGIN_PATH': '/usr/lib/mozilla/plugins', 'EDITOR': 'nano', 'QT_QPA_PLATFORMTHEME': 'qgnomeplatform', 'GTK_MODULES': 'canberra-gtk-module', 'HG': '/usr/bin/hg', 'USER': 'yo', 'TERM': 'xterm-256color', 'HOME': '/home/yo', 'ANT_HOME': '/usr/share/apache-ant', 'DESKTOP_SESSION': 'gnome-classic', 'GSETTINGS_SCHEMA_DIR': '/home/yo/data', 'GNOME_SHELL_SESSION_MODE': 'classic', 'GNOME_DESKTOP_SESSION_ID': 'this-is-deprecated', 'VTE_VERSION': '4203', '_': '/usr/bin/jupyter', 'SESSION_MANAGER': 'local/yo-pc:@/tmp/.ICE-unix/932,unix/yo-pc:/tmp/.ICE-unix/932', 'GOPATH': '/home/yo/Documentos/proyectos/go', 'PHPBREW_PATH': '/home/yo/.phpbrew/php/php-5.6.22/bin', 'XDG_SEAT': 'seat0', 'SSH_AUTH_SOCK': '/run/user/1001/keyring/ssh', 'DISPLAY': ':0', 'BROWSER': '/usr/bin/google-chrome-stable', 'PATH': '/home/yo/comandos:/home/yo/.phpbrew/php/php-5.6.22/bin:/home/yo/.phpbrew/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/home/yo/Documentos/proyectos/go/bin', 'PHPBREW_VERSION_REGEX': '^([[:digit:]]+\\.){2}[[:digit:]]+$', 'PWD': '/home/yo/Documentos/proyectos/clojure', 'OLDPWD': '/home/yo/Documentos/proyectos/clojure/parser', 'XDG_VTNR': '2', 'GDM_LANG': 'es_ES.UTF-8', 'LOGNAME': 'yo', 'WINDOWID': '29360134', 'XDG_MENU_PREFIX': 'gnome-', 'XDG_RUNTIME_DIR': '/run/user/1001', 'JPY_PARENT_PID': '14559', 'DBUS_SESSION_BUS_ADDRESS': 'unix:path=/run/user/1001/bus', 'XDG_SESSION_ID': 'c2', 'LANG': 'es_ES.UTF-8', 'AUTOJUMP_SOURCED': '1', 'PHPBREW_HOME': '/home/yo/.phpbrew', 'XAUTHORITY': '/run/user/1001/gdm/Xauthority', 'PATH_WITHOUT_PHPBREW': '/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl', 'AUTOJUMP_ERROR_PATH': '/home/yo/.local/share/autojump/errors.log', 'XDG_CURRENT_DESKTOP': 'GNOME-Classic:GNOME', 'WINDOWPATH': '2', 'XDG_SESSION_DESKTOP': 'gnome-classic', 'USERNAME': 'yo', 'PHPBREW_BIN': '/home/yo/.phpbrew/bin'}}

[E 12:17:39.757 NotebookApp] Unhandled error in API request
    Traceback (most recent call last):
      File "/usr/lib/python3.5/site-packages/notebook/base/handlers.py", line 457, in wrapper
        result = yield gen.maybe_future(method(self, *args, **kwargs))
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/handlers.py", line 62, in post
        kernel_id=kernel_id))
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
        kernel_name)
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
        self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 285, in wrapper
        yielded = next(result)
      File "/usr/lib/python3.5/site-packages/notebook/services/kernels/kernelmanager.py", line 87, in start_kernel
        super(MappingKernelManager, self).start_kernel(**kwargs)
      File "/usr/lib/python3.5/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
        km.start_kernel(**kwargs)
      File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 243, in start_kernel
        **kw)
      File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 189, in _launch_kernel
        return launch_kernel(kernel_cmd, **kw)
      File "/usr/lib/python3.5/site-packages/jupyter_client/launcher.py", line 123, in launch_kernel
        proc = Popen(cmd, **kwargs)
      File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
        restore_signals, start_new_session)
      File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
        raise child_exception_type(errno_num, err_msg)
    FileNotFoundError: [Errno 2] No such file or directory: '/go/bin/gophernotes'
[E 12:17:39.760 NotebookApp] {
      "Connection": "keep-alive",
      "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
      "Origin": "http://localhost:8888",
      "Content-Type": "application/json",
      "Host": "localhost:8888",
      "Accept-Encoding": "gzip, deflate",
      "X-Requested-With": "XMLHttpRequest",
      "Referer": "http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=gophernotes",
      "Accept-Language": "es,en-CA;q=0.8,en;q=0.6",
      "Content-Length": "80",
      "Accept": "application/json, text/javascript, */*; q=0.01"
    }
[E 12:17:39.760 NotebookApp] 500 POST /api/sessions (::1) 26.21ms referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=gophernotes
^C[I 12:17:46.038 NotebookApp] interrupted
Serving notebooks from local directory: /home/yo/Documentos/proyectos/clojure
0 active kernels 
The Jupyter Notebook is running at: http://localhost:8888/
Shutdown this notebook server (y/[n])? y
[C 12:17:48.767 NotebookApp] Shutdown confirmed
[I 12:17:48.767 NotebookApp] Shutting down kernels
 yo  ~  Documentos  proyectos  clojure  jupyter notebook
[I 12:17:51.802 NotebookApp] Serving notebooks from local directory: /home/yo/Documentos/proyectos/clojure
[I 12:17:51.803 NotebookApp] 0 active kernels 
[I 12:17:51.803 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/
[I 12:17:51.803 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
Se ha abierto una nueva ventana en la sesión actual del navegador.
[I 12:17:58.287 NotebookApp] Creating new notebook in 
[W 12:17:58.800 NotebookApp] 404 GET /static/components/MathJax/MathJax.js?config=TeX-AMS_HTML-full,Safe&delayStartupUntil=configured (::1) 21.05ms referer=http://localhost:8888/notebooks/Untitled1.ipynb?kernel_name=gophernotes
[E 12:17:59.866 NotebookApp] Failed to run command:
    ['/go/bin/gophernotes', '/run/user/1001/jupyter/kernel-0f8518f6-3a4c-4ca0-89db-59aab477f12a.json']
    with kwargs:
    {'stderr': None, 'env': {'ANT_HOME': '/usr/share/apache-ant', 'XDG_VTNR': '2', 'GNOME_DESKTOP_SESSION_ID': 'this-is-deprecated', 'USER': 'yo', 'HOME': '/home/yo', 'VTE_VERSION': '4203', 'XAUTHORITY': '/run/user/1001/gdm/Xauthority', 'AUTOJUMP_SOURCED': '1', 'GNOME_SHELL_SESSION_MODE': 'classic', 'LANG': 'es_ES.UTF-8', 'HG': '/usr/bin/hg', 'QT_QPA_PLATFORMTHEME': 'qgnomeplatform', 'SESSION_MANAGER': 'local/yo-pc:@/tmp/.ICE-unix/932,unix/yo-pc:/tmp/.ICE-unix/932', 'PHPBREW_PATH': '/home/yo/.phpbrew/php/php-5.6.22/bin', 'DESKTOP_SESSION': 'gnome-classic', 'PHPBREW_VERSION_REGEX': '^([[:digit:]]+\\.){2}[[:digit:]]+$', 'SHELL': '/bin/zsh', 'XDG_SESSION_ID': 'c2', 'SSH_AUTH_SOCK': '/run/user/1001/keyring/ssh', 'EDITOR': 'nano', 'AUTOJUMP_ERROR_PATH': '/home/yo/.local/share/autojump/errors.log', 'WINDOWID': '29360134', 'PATH': '/home/yo/comandos:/home/yo/.phpbrew/php/php-5.6.22/bin:/home/yo/.phpbrew/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/home/yo/Documentos/proyectos/go/bin', 'MOZ_PLUGIN_PATH': '/usr/lib/mozilla/plugins', 'USERNAME': 'yo', 'XDG_SESSION_DESKTOP': 'gnome-classic', 'OLDPWD': '/home/yo/Documentos/proyectos/clojure/parser', 'PHPBREW_ROOT': '/home/yo/.phpbrew', 'WINDOWPATH': '2', 'TERM': 'xterm-256color', 'PHPBREW_BIN': '/home/yo/.phpbrew/bin', 'GDM_LANG': 'es_ES.UTF-8', 'GOPATH': '/home/yo/Documentos/proyectos/go', 'XDG_RUNTIME_DIR': '/run/user/1001', 'PHPBREW_HOME': '/home/yo/.phpbrew', '_': '/usr/bin/jupyter', 'JPY_PARENT_PID': '14737', 'BROWSER': '/usr/bin/google-chrome-stable', 'PATH_WITHOUT_PHPBREW': '/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl', 'SHLVL': '1', 'XDG_SESSION_TYPE': 'x11', 'XDG_SEAT': 'seat0', 'LOGNAME': 'yo', 'GTK_MODULES': 'canberra-gtk-module', 'XDG_MENU_PREFIX': 'gnome-', 'MAIL': '/var/spool/mail/yo', 'PHPBREW_PHP': 'php-5.6.22', 'SBT_OPTS': '-Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled  -Duser.timezone=GMT', 'PWD': '/home/yo/Documentos/proyectos/clojure', 'GSETTINGS_SCHEMA_DIR': '/home/yo/data', 'DBUS_SESSION_BUS_ADDRESS': 'unix:path=/run/user/1001/bus', 'GDMSESSION': 'gnome-classic', 'DISPLAY': ':0', 'XDG_CURRENT_DESKTOP': 'GNOME-Classic:GNOME', 'PHPBREW_LOOKUP_PREFIX': ''}, 'cwd': '/home/yo/Documentos/proyectos/clojure', 'stdout': None, 'stdin': -1, 'start_new_session': True}

[E 12:17:59.866 NotebookApp] Unhandled error in API request
    Traceback (most recent call last):
      File "/usr/lib/python3.5/site-packages/notebook/base/handlers.py", line 457, in wrapper
        result = yield gen.maybe_future(method(self, *args, **kwargs))
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/handlers.py", line 62, in post
        kernel_id=kernel_id))
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
        kernel_name)
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
        yielded = self.gen.throw(*exc_info)
      File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
        self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
        value = future.result()
      File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
        raise_exc_info(self._exc_info)
      File "<string>", line 3, in raise_exc_info
      File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 285, in wrapper
        yielded = next(result)
      File "/usr/lib/python3.5/site-packages/notebook/services/kernels/kernelmanager.py", line 87, in start_kernel
        super(MappingKernelManager, self).start_kernel(**kwargs)
      File "/usr/lib/python3.5/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
        km.start_kernel(**kwargs)
      File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 243, in start_kernel
        **kw)
      File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 189, in _launch_kernel
        return launch_kernel(kernel_cmd, **kw)
      File "/usr/lib/python3.5/site-packages/jupyter_client/launcher.py", line 123, in launch_kernel
        proc = Popen(cmd, **kwargs)
      File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
        restore_signals, start_new_session)
      File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
        raise child_exception_type(errno_num, err_msg)
    FileNotFoundError: [Errno 2] No such file or directory: '/go/bin/gophernotes'
[E 12:17:59.874 NotebookApp] {
      "Accept": "application/json, text/javascript, */*; q=0.01",
      "X-Requested-With": "XMLHttpRequest",
      "Connection": "keep-alive",
      "Host": "localhost:8888",
      "Content-Type": "application/json",
      "Content-Length": "81",
      "Origin": "http://localhost:8888",
      "Referer": "http://localhost:8888/notebooks/Untitled1.ipynb?kernel_name=gophernotes",
      "Accept-Language": "es,en-CA;q=0.8,en;q=0.6",
      "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
      "Accept-Encoding": "gzip, deflate"
    }
[E 12:17:59.875 NotebookApp] 500 POST /api/sessions (::1) 72.57ms referer=http://localhost:8888/notebooks/Untitled1.ipynb?kernel_name=gophernotes

kernel error

Traceback (most recent call last):
  File "/usr/lib/python3.5/site-packages/notebook/base/handlers.py", line 457, in wrapper
    result = yield gen.maybe_future(method(self, *args, **kwargs))
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python3.5/site-packages/notebook/services/sessions/handlers.py", line 62, in post
    kernel_id=kernel_id))
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 79, in create_session
    kernel_name)
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1021, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1015, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 237, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 285, in wrapper
    yielded = next(result)
  File "/usr/lib/python3.5/site-packages/notebook/services/kernels/kernelmanager.py", line 87, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "/usr/lib/python3.5/site-packages/jupyter_client/multikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 243, in start_kernel
    **kw)
  File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 189, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "/usr/lib/python3.5/site-packages/jupyter_client/launcher.py", line 123, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: '/go/bin/gophernotes'

I'm not sure but I think than probably the error is because jupyter is trying to found the gophernotes binary inside /go/bin/gophernote (I don't know what is the root foolder for this relative path) and it's fails because my gophernotes is inside ~/Documents/projecs/go/bin/gophernotes

what could be the best way for solve it? thank you so much!!!

Handle awkward gomacro warnings

gomacro issues warning that are awkward for some workflows. See, e.g., https://github.com/gopherdata/gophernotes/blob/master/examples/Facial_Recognition_MachineBox.ipynb

Block imports

Allow the following:

import (
    "fmt"
    "strings"
)

go get does not work correctly in docker gophernotes install

This continues from #84 (comment)

Reproducer is:

In jupyter terminal excute a go get command for github.com/kortschak/graphprac:

(ugh, copy/paste from jupyter terminal is horrible)

/ # go get -v github.com/kortschak/graphprac
github.com/kortschak/graphprac (download)
created GOPATH=/root/go; see 'go help gopath'
Fetching https://gonum.org/v1/gonum/graph?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph?go-get=1
get "gonum.org/v1/gonum/graph": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum?go-get=1 (status code 404)
gonum.org/v1/gonum (download)
Fetching https://gonum.org/v1/gonum/graph/community?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/community?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/community": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/community?go-get=1
get "gonum.org/v1/gonum/graph/community": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum/graph/simple?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/simple?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/simple": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/simple?go-get=1
get "gonum.org/v1/gonum/graph/simple": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum/graph/topo?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/topo?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/topo": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/topo?go-get=1
get "gonum.org/v1/gonum/graph/topo": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum/graph/encoding?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/encoding?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/encoding": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/encoding?go-get=1
get "gonum.org/v1/gonum/graph/encoding": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum/graph/encoding/dot?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/encoding/dot?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/encoding/dot": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/encoding/dot?go-get=1
get "gonum.org/v1/gonum/graph/encoding/dot": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum/graph/network?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/network?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/network": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/network?go-get=1
get "gonum.org/v1/gonum/graph/network": verifying non-authoritative meta tag
Fetching https://gonum.org/v1/gonum/graph/path?go-get=1
Parsing meta tags from https://gonum.org/v1/gonum/graph/path?go-get=1 (status code 404)
get "gonum.org/v1/gonum/graph/path": found meta tag get.metaImport{Prefix:"gonum.org/v1/gonum", VCS:"git", RepoRoot:"https://github.com/gonum/gonum"} at https://gonum.org/v1/gonum/graph/path?go-get=1
get "gonum.org/v1/gonum/graph/path": verifying non-authoritative meta tag
gonum.org/v1/gonum/internal/asm/c128
gonum.org/v1/gonum/internal/asm/f32
gonum.org/v1/gonum/graph
gonum.org/v1/gonum/blas
gonum.org/v1/gonum/internal/asm/f64
gonum.org/v1/gonum/internal/math32
gonum.org/v1/gonum/graph/formats/dot/ast
gonum.org/v1/gonum/graph/formats/dot/internal/token
gonum.org/v1/gonum/graph/formats/dot/internal/lexer
gonum.org/v1/gonum/graph/formats/dot/internal/astx
gonum.org/v1/gonum/graph/formats/dot/internal/errors
gonum.org/v1/gonum/graph/internal/ordered
gonum.org/v1/gonum/graph/internal/set
gonum.org/v1/gonum/graph/internal/linear
gonum.org/v1/gonum/graph/encoding
gonum.org/v1/gonum/lapack
gonum.org/v1/gonum/graph/formats/dot/internal/parser
gonum.org/v1/gonum/graph/traverse
gonum.org/v1/gonum/graph/topo
gonum.org/v1/gonum/blas/gonum
gonum.org/v1/gonum/floats
gonum.org/v1/gonum/graph/formats/dot
gonum.org/v1/gonum/graph/encoding/dot
gonum.org/v1/gonum/blas/blas64
gonum.org/v1/gonum/lapack/gonum
gonum.org/v1/gonum/lapack/lapack64
gonum.org/v1/gonum/mat
gonum.org/v1/gonum/graph/simple
gonum.org/v1/gonum/graph/community
gonum.org/v1/gonum/graph/path
gonum.org/v1/gonum/graph/network
github.com/kortschak/graphprac

This creates a new GOPATH in ~root where there is an ipynb file to run. Open this and execute the first cell:

import (
    "fmt"
    "log"

    "github.com/kortschak/graphprac"
)

# gomacro_imports/github.com/kortschak/graphprac
./graphprac.go:37:1: syntax error: unexpected }, expecting expression
error executing "go build -buildmode=plugin" in directory "/root/go/src/gomacro_imports/github.com/kortschak/graphprac/": exit status 2

The equivalent set of operations works as expected on a local gophernotes install.

Failed to define a function in Docker

When I wrote the code like the following In a note book

import "fmt"
hoge := func () int {
    return 1
}
fmt.Println(hoge())

It works well.

On the other hand, if I try to define a function like this

func moge() int {
    return 1
}
fmt.Println(moge())

It showed the error.

/tmp/361320456/func_proxy.go:8:1: expected declaration, found 'IDENT' fmt

Is that the correct behavior which is supposed?

Function main in the notebook

It is confusing that defining a main function in the notebook (as described in all Go tutorials) results in an error. Maybe scrub the function declarations to remove the main wrapper, if declared?

improve test coverage

self explanatory.

Doesn't respond to heartbeat messages

Opening this issue per our discussion on e779a2a. It seems gophernotes doesn't quite conform to the Jupyter 5 messaging spec at the moment, because it drops support for the heartbeat thread which echoes back messages on the heartbeat socket.

While this isn't a problem for the common Jupyter frontends (notebook, console, etc.) it is causing a problem for me because I'm working on an alternate frontend that still expects heartbeats to work.

Thanks!

License link broken in README

https://github.com/gopherdata/gophernotes/blame/master/README.md#L292

Needs to be upper-cased to match ec9037f

inferred package names don't work

I tried this:

import yaml "gopkg.in/yaml.v2"

yields the following error when I try to use it:

undefined: yaml in yaml.Unmarshal

Import third party not working even though in GOPATH

Just downloaded and installed gophernotes on Ubuntu 16.04 and Go 1.9.1

I have the package dataframe installed from github.com/kniren/gotta/dataframe. I was able to start the gophernotes kernel successfully, but was unable to import any third party packages. I was able to use the text editor and terminal inside of jupyter to run code I was trying to run from the Go notebook, though.

Screenshot of gophernotes notebook:

Code snippet that worked:

package main

import "fmt"
import "os"
import "github.com/kniren/gota/dataframe"

func main() {
    csvData, err := os.Open("test_data.csv")
    if err != nil {
        fmt.Println("could not open test_data.csv")
    }
    
    df := dataframe.ReadCSV(csvData)
    dfSummary := df.Describe()
    
    fmt.Println(df)
    fmt.Printf("%v", dfSummary)
}

Results of go run on that code

OS info if needed:

u0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.3 LTS
Release:        16.04
Codename:       xenial```

Where to copy the kernel.json config

MacOS 10.13

On checking jupyter --data-dir
I see that the path is /Library/Jupyter

I copied the kernel files to this location however when I launch Jupyter the notebook does not show up.

Pre-existing Golang notebook from the Jupyter directory viewer, does not instantiate the gophernotes kernel

When spinning up a jupyter notebook server, you can select a *.ipynb file from the directory viewer. However, this does not force the opening of the file with the Golang kernel. It just uses the default Python kernel.

how to install kernel in Windows

Sorry to ask but it really seems hard for me to operate the instructions below.

REM Download w/o building.
go get -d github.com/gopherds/gophernotes
cd %GOPATH%\src\github.com\gopherds\gophernotes\zmq-win

REM Build x64 version.
build.bat amd64
move gophernotes.exe %GOPATH%\bin
copy lib-amd64\libzmq.dll %GOPATH%\bin

REM Build x86 version.
build.bat 386
move gophernotes.exe %GOPATH%\bin
copy lib-386\libzmq.dll %GOPATH%\bin

`gophernotes` panics

I tried running with the --debug flag on but didn't get debug output, instead I commented out the if !debug check in replpkg/log.go to force debug logging, and got the following info:

repl.go:118 could not import "github.com/k0kubun/pp": can't find import: github.com/k0kubun/pp
repl.go:118 could not import "github.com/davecgh/go-spew/spew": can't find import: github.com/davecgh/go-spew/spew
repl.go:118 could not import "fmt": reading export data: /Users/kevin/go/pkg/darwin_amd64/fmt.a: import error /Users/kevin/go/pkg/darwin_amd64/fmt.a:1:4 (byte offset = 3): expected keyword package, got "cn"

I'm guessing these don't get installed because they're not explicitly dependencies? I'm wondering if there's a way to force go get to install them or at the very least mention it in the README.

Cannot pull docker images because 'latest' tag does not exist

The 'Docker' section of this project main page reports these instructions to run the official images:

$ docker run -it -p 8888:8888 gopherdata/gophernotes
$ docker run -it -p 8888:8888 gopherdata/gophernotes-ds

However, both the command fail with this issue:

$ docker run -it -p 8888:8888 gopherdata/gophernotes
Unable to find image 'gopherdata/gophernotes:latest' locally
docker: Error response from daemon: manifest for gopherdata/gophernotes:latest not found.
See 'docker run --help'.

The error is caused by the lack of the 'latest' tag in docker hub. You should solve the tag issue or propose the user to use a tagged version instead of latest:

$ docker run -it -p 8888:8888 gopherdata/gophernotes:1.0.0
$ docker run -it -p 8888:8888 gopherdata/gophernotes-ds:1.0.0

Can't reach the local site

$ docker run --name gophernotes --net host -it dwhitena/gophernotes:latest
[I 09:52:12.780 NotebookApp] Copying /.ipython/kernels -> /.local/share/jupyter/kernels
[I 09:52:12.790 NotebookApp] Writing notebook server cookie secret to /.local/share/jupyter/runtime/notebook_cookie_secret
[I 09:52:12.860 NotebookApp] Serving notebooks from local directory: /
[I 09:52:12.860 NotebookApp] 0 active kernels
[I 09:52:12.860 NotebookApp] The IPython Notebook is running at: http://localhost:8888/
[I 09:52:12.860 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[W 09:52:12.860 NotebookApp] No web browser found: could not locate runnable browser.

and when stopping:

^C[I 09:53:45.030 NotebookApp] interrupted
Serving notebooks from local directory: /
0 active kernels
The IPython Notebook is running at: http://localhost:8888/
Shutdown this notebook server (y/[n])? ^C[C 09:53:46.720 NotebookApp] received signal 2, stopping
[I 09:53:46.720 NotebookApp] Shutting down kernels

$ docker version
Client:
 Version:      1.10.0
 API version:  1.22
 Go version:   go1.5.3
 Git commit:   590d510
 Built:        Fri Feb  5 08:21:41 UTC 2016
 OS/Arch:      darwin/amd64

Server:
 Version:      1.10.0
 API version:  1.22
 Go version:   go1.5.3
 Git commit:   590d5108
 Built:        Thu Feb  4 19:55:25 2016
 OS/Arch:      linux/amd64

I assume it's because the NotebookApp tries to find its own server by pinging localhost, which on OS X using boot2docker or dlite does not make sense as the guest's container runs inside a VM rather the host.

Missing Windows support

First of all, thanks a lot for this amazing project. But Windows support is missing... I can prepare a PR if it helps.

AFAIK, the change is minimal:

conditionally disabled 7 lines involving pkg-config in vendor/github.com/alecthomas/gozmq
use a .bat file to set CGO_CFLAGS and CGO_LDFLAGS before invoking go build

Including pre-built zmq binaries may be convenient. Or even provide gophernotes.exe for download? 😄

pkg-config: exec: "pkg-config": executable file not found in $PATH

Mac OSX 10.13

I get this error on running

go get github.com/gopherdata/gophernotes

Improve importing, fix importing panic

Steps to reproduce (maybe?)

set JUPYTER_CONFIG_DIR to $HOME/cfg/jupyter
set JUPYTER_DATA_DIR to $HOME/local/share/jupyter
run go install ./... (I'm using go1.7)

start Jupyter Notebook, start a Golang notebook

type the following

 import "fmt"
fmt.Println("Hello World")

Then hit shift+enter. I get the following panic:

panic: exit status 2

goroutine 1 [running]:
panic(0x42ebe80, 0xc420288f60)
    /Users/kevin/go/src/runtime/panic.go:500 +0x1a1
github.com/gopherds/gophernotes/internal/repl.(*Session).Eval(0xc4200ac370, 0xc420284c90, 0x27, 0xc42022d498, 0xc420286d70, 0x8, 0xc420288500, 0x0, 0x0, 0x0, ...)
    /Users/kevin/code/go/src/github.com/gopherds/gophernotes/internal/repl/repl.go:355 +0xc01
main.HandleExecuteRequest(0xc4202884e0, 0x20, 0xc420286c98, 0x8, 0xc420288500, 0x20, 0xc420286ca0, 0xf, 0x0, 0x0, ...)
    /Users/kevin/code/go/src/github.com/gopherds/gophernotes/execution.go:60 +0x2f3
main.HandleShellMsg(0xc4202884e0, 0x20, 0xc420286c98, 0x8, 0xc420288500, 0x20, 0xc420286ca0, 0xf, 0x0, 0x0, ...)
    /Users/kevin/code/go/src/github.com/gopherds/gophernotes/gophernotes.go:108 +0x2c7
main.RunKernel(0x7fff5fbff495, 0x59, 0x44ab360, 0xc4200142a8)
    /Users/kevin/code/go/src/github.com/gopherds/gophernotes/gophernotes.go:194 +0x836
main.main()
    /Users/kevin/code/go/src/github.com/gopherds/gophernotes/main.go:25 +0xc6

Haven't investigated it at all.

Go kernel does not handle multiple returns elegantly/informatively

In looking into #84 I stumbled on this:

import ("fmt"; "os/user")
fmt.Println(user.Current())

&{0 0 root root /root}
// warning: expression returned 2 values, using only the first one: [0xc420170730 <nil>]

This appears to be jupyter condensing the pair of returns from fmt.Println into a 2-tuple and then complaining about it.

Interestingly, the old behaviour of printing returned values when the would be useful has gone, so executing user.Current() outputs nothing, where in the past (from memory - I don't have a dwhitena/gophernotes that works here - I will check when I am back at that machine) it would have output the user and nil. I have checked this in an old output and this is obviously a confabulation, though it would be nice that returns are actually printed (as is the case for the python kernel below), particularly if they are going to be complained about.

def foo():
    return 1, 2
foo()

(1, 2)

expected declaration, found 'package'

facing "expected declaration, found 'package' " error while trying to run https://play.golang.org/p/ZdFpbahgC1 :

// Go's `math/rand` package provides
// [pseudorandom number](http://en.wikipedia.org/wiki/Pseudorandom_number_generator)
// generation.

package main

import "time"
import "fmt"
import "math/rand"

func main() {

    // For example, `rand.Intn` returns a random `int` n,
    // `0 <= n < 100`.
    fmt.Print(rand.Intn(100), ",")
    fmt.Print(rand.Intn(100))
    fmt.Println()

    // `rand.Float64` returns a `float64` `f`,
    // `0.0 <= f < 1.0`.
    fmt.Println(rand.Float64())

    // This can be used to generate random floats in
    // other ranges, for example `5.0 <= f' < 10.0`.
    fmt.Print((rand.Float64()*5)+5, ",")
    fmt.Print((rand.Float64() * 5) + 5)
    fmt.Println()

    // The default number generator is deterministic, so it'll
    // produce the same sequence of numbers each time by default.
    // To produce varying sequences, give it a seed that changes.
    // Note that this is not safe to use for random numbers you
    // intend to be secret, use `crypto/rand` for those.
    s1 := rand.NewSource(time.Now().UnixNano())
    r1 := rand.New(s1)

    // Call the resulting `rand.Rand` just like the
    // functions on the `rand` package.
    fmt.Print(r1.Intn(100), ",")
    fmt.Print(r1.Intn(100))
    fmt.Println()

    // If you seed a source with the same number, it
    // produces the same sequence of random numbers.
    s2 := rand.NewSource(42)
    r2 := rand.New(s2)
    fmt.Print(r2.Intn(100), ",")
    fmt.Print(r2.Intn(100))
    fmt.Println()
    s3 := rand.NewSource(42)
    r3 := rand.New(s3)
    fmt.Print(r3.Intn(100), ",")
    fmt.Print(r3.Intn(100))
}

code runs fine via 'go run' command line, any ideas on how to get around this?

refactor zmq code

This code handling zmq messages needs to be refactored to pass linting and conform to Go formatting etc. Also, it would be nice to generalize this to be less dependent on zmq version.

Expressions within functions/statements broken.

Expressions such as fmt.Println within if/for/etc broken because of line-by-line parsing.

Failed to run if/else in Docker

When I run a simple if/else statement in a docker like this:
if 7%2 == 0 {
fmt.Println("7 is even")
} else {
fmt.Println("7 is odd")
}

it failed to run and the server log output is:
Error running goimports:
/tmp/002613501/func_proxy.go:4:4: expected declaration, found 'if'

regarding a for loop, it works for a single line code like this "for i:= 1; i < 5; i++ {fmt.Println("Line %s", i)}"
but not work if format the code like this:
for i:= 1; i < 5; i++ {
fmt.Println("Line %s", i)
}

what is the limitation here?

Dockerize crashes for scipipe code example

I haven't really digged much into this yet, but though I should start with reporting that the dockerize command does not work for my scipipe example.

I'm getting this output in the terminal:

[samuel ex13jupyternotebook]$ jupyter notebook ex13jupyternotebook.ipynb 
[I 10:07:44.211 NotebookApp] Serving notebooks from local directory: /home/samuel/code/go/src/github.com/samuell/scipipe/examples/ex13jupyternotebook
[I 10:07:44.212 NotebookApp] 0 active kernels 
[I 10:07:44.212 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/
[I 10:07:44.212 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
Created new window in existing browser session.
[I 10:07:46.470 NotebookApp] Kernel started: 2fe8c997-b1f6-49d7-9cc1-fad18e60971e
[I 10:07:46.560 NotebookApp] Adapting to protocol v4.0 for kernel 2fe8c997-b1f6-49d7-9cc1-fad18e60971e
Dockerizing
exit status 1
panic: exit status 1

goroutine 1 [running]:
github.com/gophergala2016/gophernotes/replpkg.actionContainerize(0xc8200aa160, 0x0, 0x0, 0x0, 0x0)
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/replpkg/commands.go:358 +0x849
github.com/gophergala2016/gophernotes/replpkg.(*Session).Eval(0xc8200aa160, 0xc8202386f0, 0xd, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/replpkg/repl.go:315 +0x12c5
main.HandleExecuteRequest(0xc82022ee00, 0x20, 0xc8202385d0, 0x8, 0xc82022ee20, 0x20, 0xc8202385e0, 0xf, 0x0, 0x0, ...)
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/execution.go:57 +0x30d
main.HandleShellMsg(0xc82022ee00, 0x20, 0xc8202385d0, 0x8, 0xc82022ee20, 0x20, 0xc8202385e0, 0xf, 0x0, 0x0, ...)
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/gophernotes.go:71 +0x9a
main.RunKernel(0x7ffec8299b3c, 0x47, 0x7f8855d5a1c0, 0xc82000e3c0)
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/gophernotes.go:157 +0x971
main.main()
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/main.go:25 +0x246

goroutine 17 [syscall, locked to thread]:
runtime.goexit()
    /home/samuel/go/src/runtime/asm_amd64.s:1696 +0x1

goroutine 5 [syscall, locked to thread]:
github.com/gophergala2016/gophernotes/Godeps/_workspace/src/github.com/alecthomas/gozmq._C2func_zmq_device(0x2, 0x2606a50, 0x2606a50, 0x0, 0x0, 0x0)
    ??:0 +0x4d
github.com/gophergala2016/gophernotes/Godeps/_workspace/src/github.com/alecthomas/gozmq.Device(0x2, 0xc82022d9e0, 0xc82022d9e0, 0x0, 0x0)
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/Godeps/_workspace/src/github.com/alecthomas/gozmq/zmq.go:442 +0x57
created by main.PrepareSockets
    /home/samuel/code/go/src/github.com/gophergala2016/gophernotes/gophernotes.go:60 +0x8bb
[I 10:07:52.469 NotebookApp] KernelRestarter: restarting kernel (1/5)
WARNING:root:kernel 2fe8c997-b1f6-49d7-9cc1-fad18e60971e restarted

System info:
OS: Xubuntu 14.04 LTS 64bit
Go version: go1.5 linux/amd64
Python version: 2.7.10

No such file or directory: '/go/bin/gophernotes'

After installing gophernotes I've got this message:

# github.com/gophergala2016/gophernotes/Godeps/_workspace/src/github.com/alecthomas/gozmq
could not determine kind of name for C.ZMQ_HWM
could not determine kind of name for C.ZMQ_MCAST_LOOP
could not determine kind of name for C.ZMQ_RECOVERY_IVL_MSEC
could not determine kind of name for C.ZMQ_SWAP

And running notebook:

Traceback` (most recent call last):
  File "/usr/lib/python3.5/site-packages/notebook/base/handlers.py", line 458, in wrapper
    result = yield gen.maybe_future(method(self, *args, **kwargs))
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1008, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 232, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1014, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python3.5/site-packages/notebook/services/sessions/handlers.py", line 58, in post
    sm.create_session(path=path, kernel_name=kernel_name))
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1008, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 232, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1014, in run
    yielded = self.gen.throw(*exc_info)
  File "/usr/lib/python3.5/site-packages/notebook/services/sessions/sessionmanager.py", line 73, in create_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 1008, in run
    value = future.result()
  File "/usr/lib/python3.5/site-packages/tornado/concurrent.py", line 232, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib/python3.5/site-packages/tornado/gen.py", line 282, in wrapper
    yielded = next(result)
  File "/usr/lib/python3.5/site-packages/notebook/services/kernels/kernelmanager.py", line 87, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "/usr/lib/python3.5/site-packages/jupyter_client/multikernelmanager.py", line 109, in start_kernel
    km.start_kernel(**kwargs)
  File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 244, in start_kernel
    **kw)
  File "/usr/lib/python3.5/site-packages/jupyter_client/manager.py", line 190, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "/usr/lib/python3.5/site-packages/jupyter_client/launcher.py", line 123, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "/usr/lib/python3.5/subprocess.py", line 950, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.5/subprocess.py", line 1544, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: '/go/bin/gophernotes

`:print` doesn't output to the notebook

When running the :print command, it outputs in the terminal where the notebook server is running instead of the browser. Maybe it defaults to stderr instead of stdout?

Worker Pools Example is broken

The Worker Function of the worker pools example does not work, with the following error:
func literal evaluated but not used

Testing, I seem to get this error for any function of the form

func name() {

}

functions that use the following form work, but are limiting, because you wouldn't be able to compose functions onto structs to satisfy interfaces.

name := func() {

}

jupyter 4.1 stores config in $HOME/.jupyter

The installation guide recommends installing to ~/.local/share, but the documented configuration directory is $HOME/.jupyter. If you run jupyter --config-dir, it should confirm this. The documentation also mentions this: http://jupyter.readthedocs.io/en/latest/projects/jupyter-directories.html?highlight=JUPYTER_CONFIG_DIR