Call

.. image:: https://api.codacy.com/project/badge/Grade/91959f98ff34469884415e96ba2ff763 :target: https://www.codacy.com/app/solarliner/call?utm_source=gitlab.com&utm_medium=referral&utm_content=solarliner/call&utm_campaign=Badge_Grade

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

Install

Release version:

.. code:: bash pip install call

Development version

.. code:: bash

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:

.. code:: python

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

Wrap a synchronous function in a Call:

.. code:: python call = Call.from_function(factorial, 10)

Chain calls with the then keyword

.. code:: python

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

Catch errors:

.. code:: python

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

Compose calls:

.. code:: python

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

Block thread until resolved (or raises on failure):

.. code:: python

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.

.. code:: python

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.