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b, b.foo-> c, etc,
use this to iterate over all objects in the chain. Iteration is
terminated by getattr(x, attr) is None.
Args:
obj: the starting object
attr: the name of the chaining attribute
Yields:
Each successive object in the chain.
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S( s Returns true if node is in an environment where all that is required
of it is being iterable (ie, it doesn't matter if it returns a list
or an iterator).
See test_map_nochange in test_fixers.py for some examples and tests.
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Check that something isn't an attribute or function name etc.
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c C s" t | t | | } t | S( sŽ Returns true if name is imported from package at the
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None for the package and 'foo' for the name. ( t find_bindingR t bool( t packageR R( t binding( ( s* /usr/lib64/python2.7/lib2to3/fixer_util.pyt does_tree_import s c C s | j t j t j f k S( s0 Returns true if the node is an import statement.( Rq R t import_nameRK ( R( ( ( s* /usr/lib64/python2.7/lib2to3/fixer_util.pyt is_import" s c C sÆ d } t | } t | | | r+ d Sd } } xn t | j D]] \ } } | | sc qE n x1 t | j | D] \ } } | | sw Pqw qw W| | } PqE W| d k rxb t | j D]N \ } } | j t j k rĀ | j rĀ | j d j t j k rĀ | d } PqĀ qĀ Wn | d k r\t
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if it was not imported. c S s, | j t j k o+ | j o+ t | j d S( Ni ( Rq R t simple_stmtRO R ( R( ( ( s* /usr/lib64/python2.7/lib2to3/fixer_util.pyt is_import_stmt) s Ni i u importR u ( R R
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k r|t | t | j d | } | r’ | } q x t | j d D]b \ } } | j t j
k r| j d k rt | t | j | d | } | ru| } quqqWn¤ | j t k rŖ| j d j | k rŖ| } nv t | | | rÅ| } n[ | j t j k rģt | | | } n4 | j t j k r t | | j d r | } q n | r
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R+ ( R R( t nodes( ( s* /usr/lib64/python2.7/lib2to3/fixer_util.pyR s !c C s' | j t j k r| r| j d } | j t j k r£ xŌ | j D]Z } | j t j k rw | j d j | k r | SqB | j t j k rB | j | k rB | SqB Wq#| j t j k rź | j d } | j t j k r| j | k r| Sq#| j t j k r#| j | k r#| Sn| j t j k r#| rMt
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| | r| S| j t j k rß| j d } | j t j k r | j | k r | Sq#| j t j k r| j | k r| S| r#| j t j k r#| Sn d S( s Will reuturn node if node will import name, or node
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