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annotate roundup/anypy/findargspec.py @ 5442:afd9fd3a0edb

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Python 3 preparation: avoid assigning to instance __getitem__ in TruthDict. In Python 3, special method names are generally only looked up at the class level, not on instance objects, and so assigning to them for an instance object doesn't work as expected.
author Joseph Myers <jsm@polyomino.org.uk>
date Wed, 25 Jul 2018 12:29:08 +0000
parents c94fd717e28c
children c588e64718fc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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c94fd717e28c Fix http://issues.roundup-tracker.org/issue2550952 make __call__
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1 ''' Wrapper for getargspec to support other callables and python 3 support
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2
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3 In python 3 just uses getfullargspec which handles regular functions
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4 and classes with __call__ methods.
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5 '''
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6
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7 try:
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8 # Python 3+
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9 from inspect import getfullargspec as getargspec
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10 findargspec = getargspec
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11 except:
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12 # Python 2.5-2.7 modified from https://bugs.python.org/issue20828
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13 import inspect
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14
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15 def findargspec(fn):
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16 if inspect.isfunction(fn) or inspect.ismethod(fn):
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17 inspectable = fn
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18 elif inspect.isclass(fn):
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19 inspectable = fn.__init__
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20 elif hasattr(fn, '__call__'):
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21 inspectable = fn.__call__
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22 else:
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23 inspectable = fn
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24
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25 try:
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26 return inspect.getargspec(inspectable)
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27 except TypeError:
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28 raise
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