Browser does not open on Mac

[jiffyclub]

Browser does not open on Mac

[jiffyclub]

Can you open a Python interpreter, enter the following, and let me know what happens?

>>> import webbrowser
>>> webbrowser.open('http://www.python.org')

[jiffyclub]

Can you also go to the "General" pane of the System Preferences and check that you have a default web browser set? Here's what mine looks like, but I'm on Yosemite so yours will look somewhat different.

[kakyoism]

import webbrowser
webbrowser.open('http://www.python.org')

This gives me "True".

My default browser is Safari.app

[kakyoism]

BTW, the command line does end up opening the python homepage in Safari.

[jiffyclub]

Thanks. Here's another experiment for the console, if you don't mind. What's the output of this?

>>> import webbrowser
>>> webbrowser.get()

And then try:

>>> webbrowser.get().open('http://www.python.org')

Thanks!

[kakyoism]

import webbrowser
webbrowser.get()
webbrowser.GenericBrowser object at 0x10f55e3d0
webbrowser.get().open('http://www.python.org')
False

[jiffyclub]

As you might have guessed, that second way is how snakeviz is trying to open your browser, and that's why you're not ending up with anything happening.

It's really weird that webbrowser.open() works and webbrowser.get().open() doesn't. I can't reproduce that even if I install Python 2.7.5 and set my default browser to Safari. :(

One thing to try is explicitly specifying a browser to snakeviz using the -b/--browser flag. E.g.: snakeviz -b safari myprofile.

As a last resort, you can manually copy the URL printed to the terminal by snakeviz (e.g. 127.0.0.1:8080) and paste that into a browser.

Sorry I can't be more help, I'm totally stumped.

[kakyoism]

I tried to c&p the address (127.0.0.1:8080) into Safari while the snakeviz server was running, and here is what I got:

Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/tornado/web.py", line 1323, in _execute
result = self.prepare()
File "/Library/Python/2.7/site-packages/tornado/web.py", line 2014, in prepare
raise HTTPError(self._status_code)
HTTPError: HTTP 404: Not Found

Thank you for your patience.

[jiffyclub]

I apologize, I gave you some bad advice there. Snakeviz does not print out a complete URL that you can paste into a browser. I'll make an issue to fix that.

Have you tried the -b option to manually specify the browser?

[kakyoism]

"-b safari" solved the problem. Thanks a lot!
I had thought I ought to use the full path to the executable which would have been /Applications/Safari.app/Contents/MacOS/Safari . This never worked.

You might consider revising the help text about the -b option, currently saying:
"""
path to the web browser executable to use to open the visualization;
"""

Again, thanks for the prompt help!

[jiffyclub]

Good idea, thanks. I only learned about that trying to figure out how to help you. 😸 You can see a list of all the browsers the webbrowser module knows about at https://docs.python.org/3.4/library/webbrowser.html.