Metadata-Version: 2.0
Name: parso
Version: 0.3.1
Summary: A Python Parser
Home-page: https://github.com/davidhalter/parso
Author: David Halter
Author-email: davidhalter88@gmail.com
Maintainer: David Halter
Maintainer-email: davidhalter88@gmail.com
License: MIT
Keywords: python parser parsing
Platform: any
Classifier: Development Status :: 4 - Beta
Classifier: Environment :: Plugins
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Text Editors :: Integrated Development Environments (IDE)
Classifier: Topic :: Utilities
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parso - A Python Parser
###################################################################
.. image:: https://secure.travis-ci.org/davidhalter/parso.png?branch=master
:target: http://travis-ci.org/davidhalter/parso
:alt: Travis-CI build status
.. image:: https://coveralls.io/repos/davidhalter/parso/badge.png?branch=master
:target: https://coveralls.io/r/davidhalter/parso
:alt: Coverage Status
.. image:: https://raw.githubusercontent.com/davidhalter/parso/master/docs/_static/logo_characters.png
Parso is a Python parser that supports error recovery and round-trip parsing
for different Python versions (in multiple Python versions). Parso is also able
to list multiple syntax errors in your python file.
Parso has been battle-tested by jedi_. It was pulled out of jedi to be useful
for other projects as well.
Parso consists of a small API to parse Python and analyse the syntax tree.
A simple example:
.. code-block:: python
>>> import parso
>>> module = parso.parse('hello + 1', version="3.6")
>>> expr = module.children[0]
>>> expr
PythonNode(arith_expr, [<Name: hello@1,0>, <Operator: +>, <Number: 1>])
>>> print(expr.get_code())
hello + 1
>>> name = expr.children[0]
>>> name
<Name: hello@1,0>
>>> name.end_pos
(1, 5)
>>> expr.end_pos
(1, 9)
To list multiple issues:
.. code-block:: python
>>> grammar = parso.load_grammar()
>>> module = grammar.parse('foo +\nbar\ncontinue')
>>> error1, error2 = grammar.iter_errors(module)
>>> error1.message
'SyntaxError: invalid syntax'
>>> error2.message
"SyntaxError: 'continue' not properly in loop"
Resources
=========
- `Testing <http://parso.readthedocs.io/en/latest/docs/development.html#testing>`_
- `PyPI <https://pypi.python.org/pypi/parso>`_
- `Docs <https://parso.readthedocs.org/en/latest/>`_
- Uses `semantic versioning <http://semver.org/>`_
Installation
============
pip install parso
Future
======
- There will be better support for refactoring and comments. Stay tuned.
- There's a WIP PEP8 validator. It's however not in a good shape, yet.
Known Issues
============
- `async`/`await` are already used as keywords in Python3.6.
- `from __future__ import print_function` is not ignored.
Acknowledgements
================
- Guido van Rossum (@gvanrossum) for creating the parser generator pgen2
(originally used in lib2to3).
- `Salome Schneider <https://www.crepes-schnaegg.ch/cr%C3%AApes-schn%C3%A4gg/kunst-f%C3%BCrs-cr%C3%AApes-mobil/>`_
for the extremely awesome parso logo.
.. _jedi: https://github.com/davidhalter/jedi
.. :changelog:
Changelog
---------
0.3.1 (2018-07-09)
+++++++++++++++++++
- Bugfixes in the diff parser and keyword-only arguments
0.3.0 (2018-06-30)
+++++++++++++++++++
- Rewrote the pgen2 parser generator.
0.2.1 (2018-05-21)
+++++++++++++++++++
- A bugfix for the diff parser.
- Grammar files can now be loaded from a specific path.
0.2.0 (2018-04-15)
+++++++++++++++++++
- f-strings are now parsed as a part of the normal Python grammar. This makes
it way easier to deal with them.
0.1.1 (2017-11-05)
+++++++++++++++++++
- Fixed a few bugs in the caching layer
- Added support for Python 3.7
0.1.0 (2017-09-04)
+++++++++++++++++++
- Pulling the library out of Jedi. Some APIs will definitely change.