Metadata-Version: 1.1
Name: patternmatching
Version: 3.0.1
Summary: Python Pattern Matching
Home-page: http://www.grantjenks.com/docs/patternmatching/
Author: Grant Jenks
Author-email: contact@grantjenks.com
License: Apache 2.0
Description: Python Pattern Matching
        =======================
        
        Python, I love you. But I'd like you to change. It's not you, it's me. Really.
        See, you don't have pattern matching. But, that's not the root of it. Macros
        are the root of it. You don't have macros but that's OK. Right now, I want
        pattern matching. I know you offer me ``if``/``elif``/``else`` statements but I
        need more. I'm going to abuse your functions. Guido, et al, I hope you can
        forgive me. This will only hurt a little.
        
        `Python Pattern Matching`_ is an Apache2 licensed Python module for `pattern
        matching`_ like that found in functional programming languages. Most projects
        that address Python pattern matching focus on syntax and simple cases. Operator
        overloading is often used to change the semantics of operators to support
        pattern matching. In other cases, function decorators are used to implement
        multiple dispatch, sometimes known as function overloading. Each of these
        syntaxes, operators, and decorators, is really more of a detail in the
        application of pattern matching.
        
        A lot of people have tried to make this work before. Somehow it didn't take. I
        should probably call this yet-another-python-pattern-matching-module but
        "yappmm" doesn't roll off the tongue. Other people have tried overloading
        operators and changing codecs. This module started as a codec hack but those are
        hard because they need an ecosystem of emacs-modes, vim-modes and the like to
        really be convenient.
        
        Python Pattern Matching focuses instead on the semantics of pattern matching in
        Python. The dynamic duck-typing behavior in Python is distinct from the tagged
        unions found in functional programming languages. Rather than trying to emulate
        the behavior of functional pattern matching, this project attempts to implement
        pattern matching that looks and feels native to Python. In doing so the
        traditional function call is used as syntax. There are no import hooks, no
        codecs, no AST transforms.
        
        .. todo::
        
           Python ``match`` function example.
        
        Finally, pythonic pattern matching! If you've experienced the feature before in
        "functional" languages like Erlang, Haskell, Clojure, F#, OCaml, etc. then you
        can guess at the semantics.
        
        .. todo::
        
           Show the same code without ``patternmatching``.
        
        
        Features
        --------
        
        - Pure-Python
        - Developed on Python 3.7
        - Tested on CPython 3.4, 3.5, 3.6, 3.7 and PyPy3
        
        .. todo::
        
           - Fully Documented
           - 100% test coverage
           - Hours of stress testing
        
           .. image:: https://api.travis-ci.org/grantjenks/python-pattern-matching.svg?branch=master
              :target: http://www.grantjenks.com/docs/patternmatching/
        
           .. image:: https://ci.appveyor.com/api/projects/status/github/grantjenks/python-pattern-matching?branch=master&svg=true
              :target: http://www.grantjenks.com/docs/patternmatching/
        
        
        Quickstart
        ----------
        
        Installing `Python Pattern Matching`_ is simple with `pip
        <http://www.pip-installer.org/>`_::
        
            $ pip install patternmatching
        
        You can access documentation in the interpreter with Python's built-in `help`
        function. The `help` works on modules, classes, and functions in `pattern
        matching`_.
        
        .. code-block:: python
        
            >>> from pypatt import match, bind, bound, like
            >>> help(match)
        
        
        Alternative Packages
        --------------------
        
        - https://github.com/lihaoyi/macropy
          - module import, but similar design
        - https://github.com/Suor/patterns
          - decorator with funky syntax
          - Shared at Python Brazil 2013
        - https://github.com/mariusae/match
          - http://monkey.org/~marius/pattern-matching-in-python.html
          - operator overloading
        - http://blog.chadselph.com/adding-functional-style-pattern-matching-to-python.html
          - multi-methods
        - http://svn.colorstudy.com/home/ianb/recipes/patmatch.py
          - multi-methods
        - http://www.artima.com/weblogs/viewpost.jsp?thread=101605
          - the original multi-methods
        - http://speak.codebunk.com/post/77084204957/pattern-matching-in-python
          - multi-methods supporting callables
        - http://www.aclevername.com/projects/splarnektity/
          - not sure how it works but the syntax leaves a lot to be desired
        - https://github.com/martinblech/pyfpm
          - multi-dispatch with string parsing
        - https://github.com/jldupont/pyfnc
          - multi-dispatch
        - http://www.pyret.org/
          - It's own language
        - https://pypi.python.org/pypi/PEAK-Rules
          - generic multi-dispatch style for business rules
        - http://home.in.tum.de/~bayerj/patternmatch.py
          - Pattern-object idea (no binding)
        - https://github.com/admk/patmat
          - multi-dispatch style
        
        
        Other Languages
        ---------------
        
        - https://msdn.microsoft.com/en-us/library/dd547125.aspx F#
        - https://doc.rust-lang.org/book/patterns.html Rust
        - https://www.haskell.org/tutorial/patterns.html Haskell
        - http://erlang.org/doc/reference_manual/expressions.html#pattern Erlang
        - https://ocaml.org/learn/tutorials/data_types_and_matching.html Ocaml
        
        
        Developer Guide
        ---------------
        
        * `Python Pattern Matching Tutorial`_
        * `Python Pattern Matching Reference`_
        * `Python Pattern Matching Search`_
        * `Python Pattern Matching Index`_
        
        .. _`Python Pattern Matching Tutorial`: http://www.grantjenks.com/docs/patternmatching/tutorial.html
        .. _`Python Pattern Matching Reference`: http://www.grantjenks.com/docs/patternmatching/reference.html
        .. _`Python Pattern Matching Search`: http://www.grantjenks.com/docs/patternmatching/search.html
        .. _`Python Pattern Matching Index`: http://www.grantjenks.com/docs/patternmatching/genindex.html
        
        
        Project Links
        -------------
        
        * `Python Pattern Matching`_
        * `Python Pattern Matching at PyPI`_
        * `Python Pattern Matching at GitHub`_
        * `Python Pattern Matching Issue Tracker`_
        
        .. _`Python Pattern Matching`: http://www.grantjenks.com/docs/patternmatching/
        .. _`Python Pattern Matching at PyPI`: https://pypi.python.org/pypi/patternmatching/
        .. _`Python Pattern Matching at GitHub`: https://github.com/grantjenks/python-pattern-matching
        .. _`Python Pattern Matching Issue Tracker`: https://github.com/grantjenks/python-pattern-matching/issues
        
        
        Python Pattern Matching License
        -------------------------------
        
        Copyright 2015-2019, Grant Jenks
        
        Licensed under the Apache License, Version 2.0 (the "License"); you may not use
        this file except in compliance with the License.  You may obtain a copy of the
        License at
        
            http://www.apache.org/licenses/LICENSE-2.0
        
        Unless required by applicable law or agreed to in writing, software distributed
        under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
        CONDITIONS OF ANY KIND, either express or implied.  See the License for the
        specific language governing permissions and limitations under the License.
        
        .. _`pattern matching`: http://www.grantjenks.com/docs/patternmatching/
        
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Natural Language :: English
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
