Pattern matching for python. Works in Python 2.7, 3.3+ and pypy.
::
pip install patterns
.. code:: python
from patterns import patterns, Mismatch
@patterns
def factorial():
if 0: 1
if n is int: n * factorial(n-1)
if []: []
if [x] + xs: [factorial(x)] + factorial(xs)
if {'n': n, 'f': f}: f(factorial(n))
assert factorial(0) == 1
assert factorial(5) == 120
assert factorial([3,4,2]) == [6, 24, 2]
assert factorial({'n': [5, 1], 'f': sum}) == 121
factorial('hello') # raises Mismatch
See tests for more examples.
Mismatch passing to function env.. |Build Status| image:: https://travis-ci.org/Suor/patterns.svg?branch=master :target: https://travis-ci.org/Suor/patterns
FAQs
Pattern matching for python
We found that patterns demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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