معرفی شرکت ها
astdump-4.3
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشترتوضیحات
Extract information from Python modules without importing
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | astdump-4.3 |
| نام | astdump |
| نسخه کتابخانه | 4.3 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | anatoly techtonik |
| ایمیل نویسنده | techtonik@gmail.com |
| آدرس صفحه اصلی | https://bitbucket.org/techtonik/astdump |
| آدرس اینترنتی | https://pypi.org/project/astdump/ |
| مجوز | Public Domain |
Get information from Python module without executing it.
This is a tool and a library to work with Abstract Syntax Tree
(AST) of source code in Python. It can be used to explore AST,
inspect nodes and process them.
When used from command line, ``astdump.py`` can generate
``setup.py`` for your module or print its structure.
What is AST
-----------
There is a good talk `What would you do with an AST?
<http://desmaj.bitbucket.org/talks/>`_ by Matthew J Desmarais
with information that you will find useful.
`astdump` package provides dataset_ with generated examples of
AST representation for various Python snippets. Feel free to
clone repository and experiment with the code - it is safe and
version controlled.
For the curious, structure of Python abstract tree is defined in
http://hg.python.org/cpython/file/v2.7.6/Parser/Python.asdl
Command line usage
------------------
::
$ ./astdump.py
Usage: astdump.py [options] <filename.py>
AST dump tool to inspect Python source code without importing it. Can
extract values of top level vars, automatically generate setup.py and
dump structure of an Abstract Syntax Tree in readable format.
Options:
-h, --help show this help message and exit
--topvars get top level variables
--generate generate setup.py for a given filename
Read top level variables from Python module without importing::
$ ./astdump.py --topvars astdump.py
__author__ = 'anatoly techtonik <techtonik@gmail.com>'
__description__ = 'Extract information from Python module without importing it.'
__license__ = 'Public Domain'
__version__ = '3.0'
Automatically generate `setup.py`::
$ ./astdump.py --generate astdump.py
#!/usr/bin/env python
from distutils.core import setup
setup(
name = 'astdump',
version = '3.0',
author = 'anatoly techtonik',
author_email = 'techtonik@gmail.com',
description = 'Extract information from Python module without importing it.',
license = 'Public Domain',
py_modules=['astdump'],
)
'prettyprint' AST tree::
$ ./astdump.py setup.py
Module
ImportFrom
alias
Expr
Call
Name
Load
keyword
Str
keyword
Str
...
keyword
Str
keyword
List
Str
Load
Library Usage
-------------
``top_level_vars(filename)``
Return name/value pairs for top level variables for the script specified as
`filename`.
Only string and int values are supported.
::
>>> import astdump
>>> astdump.top_level_vars("astdump.py")
{'__version__': '3.0', '__description__': 'Extract information from Python
module without importing it.', '__license__': 'Public Domain', '__author__
': 'anatoly techtonik <techtonik@gmail.com>'}
``indented(text, printres=True)``
Print indented AST for the Python code specified in `text` variable. The goal
is to print AST as pretty as possible, so the output is likely to change. If
`printres` is false, return string instead.
::
>>> import astdump
>>> astdump.indented('2+3')
Module
Expr
BinOp
Num
Add
Num
``dumpattrs(node, indent=0, oneline=False, output=sys.stdout)``
Dump attributes of given node to `output` (sys.stdout by default).
If `oneline` is set, format output as one line. Otherwise dump one
attribute per line with the given `indent`.
::
>>> from astdump import dumpattrs as dat
>>> import ast
>>> root = ast.parse('2+3')
>>> root
<_ast.Module at 0x35f8790>
>>> dat(root)
body: [<_ast.Expr object at 0x035F8730>]
>>> dat(root.body[0])
value: <_ast.BinOp object at 0x035F8850>
Links
-----
.. # Tools that use Python AST
- `pss <https://github.com/eliben/pss>`_ - filetype aware grep for sources, with colors, public domain
- `redhawk <http://pypi.python.org/pypi/redhawk/>`_ - AST aware grep, BSD license
- `PythonJS <https://github.com/PythonJS/PythonJS>`_ - Python to JavaScript translator using AST, license BSD-3
- `astviewer <https://github.com/titusjan/astviewer>`_ - MIT licensed ASTree viewer in Qt (PySide)
- `snakefood <http://furius.ca/snakefood/>`_ - Python Dependency Graphs
.. # Blogs
- http://eli.thegreenplace.net/2014/07/29/ast-matchers-and-clang-refactoring-tools/
- https://julien.danjou.info/blog/2015/python-ast-checking-method-declaration
.. # Discussions
- `python-ideas <https://groups.google.com/d/msg/python-ideas/d-LNcweOQDU/IskneIaEutwJ>`_ -
original mail about static module/package inspection that started it all
- `python-static-type-checking <https://groups.google.com/forum/?fromgroups#!forum/python-static-type-checking/>`_ -
Group about static analysis of Python programs
- `issue19557 <http://bugs.python.org/issue19557>`_ on Python bug tracker
about incomplete official AST documentation
Changes
-------
4.3 (2016-02-14)
* fix Python 3 installation error (issue #2)
4.2 (2014-08-15)
* read __url__ for setup.py generator
4.1 (2014-08-15)
* setup.py generator tries to use module docstring for
short description if __description__ is not set
4.0 (2014-06-25)
* fix setup.py generator for Python 3 (broken in 3.3)
* API changes:
* TreeDumper() callbacks now receive ``stack`` of
parent nodes instead of depth ``level``
* TreeDumper().level is renamed to TreeDumper().limit
* added TreeDumper().stack list to access parent nodes
* made TreeDumper().depth a read-only property, which
returns current length of stack
3.3 (2014-03-21)
* setup.py generator is rewritten to look up missing
attributes on PyPI, add classifiers and README read()
for long description
3.2 (2013-11-27)
* API change:
* ``dumpattrs(node)`` helper to print node attributes
3.1 (2013-11-20)
* fix missing dataset/ dir from source distribution
3.0 (2013-11-19)
* added dataset/ dir with snippets, output examples and
update.py that regenerates them. See dataset/README.txt
* API changes:
* added ``indented(text)`` to dump indented AST, only
shows nodes for now
* ``indented(text, printres=False)`` returns string
instead of printing
* made TreeDumper() silent by default. It just walks.
* fixed pip install, added MANIFEST.in, added trove
categories, thanks to Jonathan Eunice (pull request #1)
2.0 (2013-11-10)
* API change:
* remove --dump option, AST is dumped by default
* add --topvars option for previous behaviour
1.2 (2013-11-10)
* fix default output for Python 2 (broken in 1.1)
1.1 (2013-09-16)
* support Python 3
1.0 (2012-03-29)
* API change:
* ``get_top_vars(node)`` is replaced with ``top_level_vars(filename)``
Release checklist
-----------------
| [ ] update version in astdump.py
| [ ] run dataset/update.py for Python 2 and 3
| [ ] update README.rst
| [ ] python astdump.py --generate astdump.py >setup.py
| [ ] check that setup.py contains unix linefeeds
| [ ] setup.py sdist register upload
| [ ] hg tag
.. _dataset: https://bitbucket.org/techtonik/astdump/src/tip/dataset/
نحوه نصب
نصب پکیج whl astdump-4.3:
pip install astdump-4.3.whl
نصب پکیج tar.gz astdump-4.3:
pip install astdump-4.3.tar.gz