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� ,�]c # @ s� d Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l m Z d d l m Z d d l m Z e j e � Z e j e j � e e j � e e j � e e j � e e j � Z d d d d d d d d d d d d d d d d d d d d d d d d d d d d! d" d# d$ d% d& d' d( g# Z d) d7 d* � � YZ d+ � Z d, � Z d- � Z d. e f d/ � � YZ e � Z d8 d9 d0 � Z d1 � Z! d2 � Z" d3 e f d4 � � YZ# d5 e f d6 � � YZ$ e Z% d S(: s' past.translation ================== The ``past.translation`` package provides an import hook for Python 3 which transparently runs ``futurize`` fixers over Python 2 code on import to convert print statements into functions, etc. It is intended to assist users in migrating to Python 3.x even if some dependencies still only support Python 2.x. Usage ----- Once your Py2 package is installed in the usual module search path, the import hook is invoked as follows: >>> from past.translation import autotranslate >>> autotranslate('mypackagename') Or: >>> autotranslate(['mypackage1', 'mypackage2']) You can unregister the hook using:: >>> from past.translation import remove_hooks >>> remove_hooks() Author: Ed Schofield. Inspired by and based on ``uprefix`` by Vinay M. Sajip. i����N( t ParseError( t RefactoringTool( t fixess lib2to3.fixes.fix_applys lib2to3.fixes.fix_excepts lib2to3.fixes.fix_execfiles lib2to3.fixes.fix_exitfuncs lib2to3.fixes.fix_funcattrss lib2to3.fixes.fix_filters lib2to3.fixes.fix_has_keys lib2to3.fixes.fix_idiomss lib2to3.fixes.fix_imports lib2to3.fixes.fix_interns lib2to3.fixes.fix_isinstances lib2to3.fixes.fix_methodattrss lib2to3.fixes.fix_nes lib2to3.fixes.fix_numliteralss lib2to3.fixes.fix_parens lib2to3.fixes.fix_prints lib2to3.fixes.fix_raises lib2to3.fixes.fix_renamess lib2to3.fixes.fix_reduces lib2to3.fixes.fix_reprs lib2to3.fixes.fix_standarderrors lib2to3.fixes.fix_sys_excs lib2to3.fixes.fix_throws lib2to3.fixes.fix_tuple_paramss lib2to3.fixes.fix_typess lib2to3.fixes.fix_ws_commas lib2to3.fixes.fix_xreadliness lib2to3.fixes.fix_basestrings lib2to3.fixes.fix_execs lib2to3.fixes.fix_getcwdus lib2to3.fixes.fix_longs lib2to3.fixes.fix_nexts lib2to3.fixes.fix_nonzeros lib2to3.fixes.fix_raw_inputs lib2to3.fixes.fix_xranget RTsc B sD e Z d Z d Z d Z d Z d Z e d � � Z e d � � Z RS( s& A namespace for the refactoring tools. This avoids creating these at the module level, which slows down the module import. (See issue #117). There are two possible grammars: with or without the print statement. Hence we have two possible refactoring tool implementations. c C sG d t j t j g k rC t t � t _ t t i t d 6� t _ n d S( sj Call this before using the refactoring tools to create them on demand if needed. t print_functionN( t NoneR t _rtt _rtpR t myfixest True( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt setup� s c C sG d t j t j g k rC t t � t _ t t i t d 6� t _ n d S( sj Call this before using the refactoring tools to create them on demand if needed. R N( R R t _rt_py2_detectt _rtp_py2_detectR t py2_detect_fixersR ( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt setup_detect_python2� s N( t __name__t __module__t __doc__R R R R R t staticmethodR R ( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyR v s c C s� g } x� t r� t j j | � } | d | k rI | j d | d � Pq | d | k rq | j d | d � Pq | d } | j d | d � q W| S( sA Split a path into all components. From Python Cookbook. i i ( R t ost patht splitt insert( R t allpartst parts( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt splitall� s c C sk g } t | � } t | � } x: t | | � D]) \ } } | | k rJ Pn | j | � q. Wt j j | � S( s^ Returns the longest common substring to the two strings, starting from the left. ( R t zipt appendR R t join( t s1t s2t chunkst path1t path2t dir1t dir2( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt common_substring� s c C s� t j � y t j j | | � } WnL t k rq } | j d k sS | j d k rY � n t j j | | � } n X| t | � d k r� t j d j | � � t St j d j | � � t Sd S( sD Returns a bool indicating whether we think the code is Py2 s bad inputt =i����s Detected Python 2 code: {0}s Detected Python 3 code: {0}N( R R R t refactor_stringR t msgt valueR t strt loggert debugt formatR t False( t sourcet pathnamet treet e( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt detect_python2� s t Py2Fixerc B sM e Z d Z e Z d � Z d � Z d � Z d d � Z d � Z d � Z RS( si An import hook class that uses lib2to3 for source-to-source translation of Py2 code to Py3. c C s: d | _ d d g | _ t j | j � | _ g | _ d S( Nt futuret past( R t foundt base_exclude_pathst copyt exclude_pathst include_paths( t self( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt __init__� s c C s | j | 7_ d S( s� Pass in a sequence of module names such as 'plotrique.plotting' that, if present at the leftmost side of the full package name, would specify the module to be transformed from Py2 to Py3. N( R: ( R; t paths( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt include� s c C s | j | 7_ d S( s� Pass in a sequence of strings such as 'mymodule' that, if present at the leftmost side of the full package name, would cause the module not to undergo any source transformation. N( R9 ( R; R= ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt exclude� s c C sC t j d j | � � d | k r| | j d d � \ } } | d k rs | j | | � } | j | � } | j } n | } n y t j | | � | _ Wn: t k r� } t j d � t j d j | | � � d SX| j d d | _ | j t j k rt j j | j d d � | _ n% | j t j k r?| j d | _ n | S( Ns Running find_module: {0}...t .i s Py2Fixer could not find {0}s Exception was: {0})i����s __init__.py( R* R+ R, t rsplitR t find_modulet load_modulet __path__t impR6 t Exceptiont kindt PKG_DIRECTORYR R R R/ t PY_SOURCE( R; t fullnameR t parentt childt loadert modR1 ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyRB s( "c C s� t j � | d 7} y t j j | | j � } WnO t k r� } | j d k s` | j d k rf � n t j j | | j � } n Xt | � d S( Ns s bad inputR% i����( R R R R& R/ R R' R( R R) ( R; R. R0 R1 ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt transform s c B s� e j d j | � � | e j k r5 e j | } n�| j e j e j e j e j f k re e } nn e g | j D] } | j | � ^ qr � r� e } n: e g | j D] } | j | � ^ q� � r� e } n e } | se j d j | � � e j | | j � } n�e j d j | � � e j | � } | e j | <| j | _ | | _ | | _ | j e j k r�e j j | j � g | _ | | _ n g | _ | j d � d | _ y�e j | j � } e j j | � s�e } n3 e j! | j � j" } e j! | � j" } | | k } | sle# | d � �@ } | j$ � } y e% j& | � } Wn e' k rbe } n XWd QXn | r�| j d r�| j d j$ � } n9 | j e j k r�e# | j � � } | j$ � } Wd QXn e( | | j � r�| j) | � } n e* | | j d � } e j j | � } yZ e j j | � s>e j+ | � n e# | d � �# } e% j, | � } | j- | � Wd QXWq�e' k r�q�Xn | | j. f d UWn e' k r�} e j | =� n X| j d r�| j d j/ � n | S( Ns Running load_module for {0}...s Excluded {0} from translations Autoconverting {0} ...R@ i t rbt exect wb(0 R* R+ R, t syst modulesRG RE t PY_COMPILEDt C_EXTENSIONt C_BUILTINt PY_FROZENR- t anyR9 t startswithR: R RC R6 t new_moduleR/ t __file__R t __loader__RH R R t dirnameRD t __package__t rpartitiont cache_from_sourcet existst statt st_mtimet opent readt marshalt loadsRF R2 RO t compilet makedirst dumpst writet __dict__t close( R; RJ RN t convertR t cachenamet update_cachet sourcetimet cachetimet ft datat codeR. R^ R1 ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyRC 1 s� + + N( R R R R t PY2FIXERR< R> R? R RB RO RC ( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyR3 � s c C s� t | t � r | f } n t | t � r6 | f } n t | � t | � d k s^ t d � � t j | � t j | � t j d d k } | r� t t j k r� t j j d t � n d S( Ni s Pass at least one argumenti ( t isinstanceR) t lent AssertionErrort _hookR> R? RS t version_infot meta_pathR ( R: R9 t enable( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt install_hooks� s ( c C s& t t j k r" t j j t � n d S( N( R{ RS R} t remove( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt remove_hooks� s c C s t t j k S( sG Returns True if the import hooks are installed, False if not. ( R{ RS R} ( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt detect_hooks� s t hooksc B s e Z d Z d � Z d � Z RS( s� Acts as a context manager. Use like this: >>> from past import translation >>> with translation.hooks(): ... import mypy2module >>> import requests # py2/3 compatible anyway >>> # etc. c C s t � | _ t � | S( N( R� t hooks_were_installedR ( R; ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt __enter__� s c G s | j s t � n d S( N( R� R� ( R; t args( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt __exit__� s ( R R R R� R� ( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyR� � s t suspend_hooksc B s e Z d Z d � Z d � Z RS( sx Acts as a context manager. Use like this: >>> from past import translation >>> translation.install_hooks() >>> import http.client >>> # ... >>> with translation.suspend_hooks(): >>> import requests # or others that support Py2/3 If the hooks were disabled before the context, they are not installed when the context is left. c C s t � | _ t � | S( N( R� R� R� ( R; ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyR� � s c G s | j r t � n d S( N( R� R ( R; R� ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyR� � s ( R R R R� R� ( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyR� � s ( ( ( (& R RE t loggingRg R RS R8 t lib2to3.pgen2.parseR t lib2to3.refactorR t libfuturizeR t getLoggerR R* t setLevelt DEBUGt listt libfuturize_fix_names_stage1t lib2to3_fix_names_stage1t libfuturize_fix_names_stage2t lib2to3_fix_names_stage2R R R R R$ R2 t objectR3 R{ R R� R� R� R� t autotranslate( ( ( s= /usr/lib/python2.7/site-packages/past/translation/__init__.pyt <module>! sx & 5 �
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