solarliner/python-call

Thread-based, JS-like asynchronous calls for Python. Works in both Python 2.7 and Python 3.5+.

Call

Thread-based, JS-like asynchronous calls for Python. Works in both Python 2.7 and Python 3.5+.

Install

Release version:

Development version

git clone https://gitlab.com/solarliner/call.git
cd call
# Activate virtualenv if needed
python setup.py install

The library requires no other dependencies, and (will soon) support Python's await keyword.

Use

Create a call:

def cb(resolve, reject):
    result = factorial(100)
    resolve(result)

call = Call(cb)

Wrap a synchronous function in a Call:

Chain calls with the then keyword

call = Call(cb).then(lambda val: print(val))

Catch errors:

call = Call(cb)\
    .then(lambda val: raise Exception())\
    .catch(lambda err: print('Whoops'))

Compose calls:

results = Call.all([Call(cb) for _ in range(10)])

Block thread until resolved (or raises on failure):

result = call.wait()

Wait for call to either resolve or reject. Note that it is not recommended to get the data directly, as it may be None, which may or may not indicate that an error has occurred.

call.join()
result = call.data  # Not recommended

Contribute

The repository follows the git flow standards. Create a feature branch, then ask for a pull/merge request.

The main repository is on GitLab, however the GitHub mirror is functional and you should be able to ask for pull requests. However, they will be processed in GitLab.