ðÕYfò ã@sudZddlmZddlmZddlmZmZmZm Z ddl m Z Gdd„dej ƒZdS) aFixer that changes map(F, ...) into list(map(F, ...)) unless there exists a 'from future_builtins import map' statement in the top-level namespace. As a special case, map(None, X) is changed into list(X). (This is necessary because the semantics are changed in this case -- the new map(None, X) is equivalent to [(x,) for x in X].) We avoid the transformation (except for the special case mentioned above) if the map() call is directly contained in iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:. NOTE: This is still not correct if the original code was depending on map(F, X, Y, ...) to go on until the longest argument is exhausted, substituting None for missing values -- like zip(), it now stops as soon as the shortest argument is exhausted. é)Útoken)Ú fixer_base)ÚNameÚCallÚListCompÚin_special_context)Úpython_symbolsc@s.eZdZdZdZdZdd„ZdS)ÚFixMapTaé map_none=power< 'map' trailer< '(' arglist< 'None' ',' arg=any [','] > ')' > > | map_lambda=power< 'map' trailer< '(' arglist< lambdef< 'lambda' (fp=NAME | vfpdef< '(' fp=NAME ')'> ) ':' xp=any > ',' it=any > ')' > > | power< 'map' trailer< '(' [arglist=any] ')' > > zfuture_builtins.mapcCs~|j|ƒrdS|jjtjkrh|j|dƒ|jƒ}d|_tt dƒ|gƒ}nd|kr§t |djƒ|djƒ|djƒƒ}nÇd|krÆ|d jƒ}n‡d |kr1|d }|jtj kr1|j d jt jkr1|j d jd kr1|j|d ƒdSt|ƒrAdS|jƒ}d|_tt dƒ|gƒ}|j|_|S)NzYou should use a for loop hereÚÚlistZ map_lambdaZxpÚfpÚitZmap_noneÚargÚarglistéÚNonezjcannot convert map(None, ...) with multiple arguments because map() now truncates to the shortest sequence)Z should_skipÚparentÚtypeÚsymsZ simple_stmtZwarningZcloneÚprefixrrrrZchildrenrÚNAMEÚvaluer)ÚselfZnodeZresultsÚnewÚargs©rú:/opt/alt/python35/lib64/python3.5/lib2to3/fixes/fix_map.pyÚ transform;s6           zFixMap.transformN)Ú__name__Ú __module__Ú __qualname__Z BM_compatibleZPATTERNZskip_onrrrrrr s r N)Ú__doc__Zpgen2rr rZ fixer_utilrrrrZpygramrrZConditionalFixr rrrrÚs "