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27 lines
873 B
27 lines
873 B
9 months ago
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u"""
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Fixer for os.getcwd() -> os.getcwdu().
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Also warns about "from os import getcwd", suggesting the above form.
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"""
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from lib2to3 import fixer_base
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from lib2to3.fixer_util import Name
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class FixGetcwd(fixer_base.BaseFix):
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PATTERN = u"""
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power< 'os' trailer< dot='.' name='getcwd' > any* >
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import_from< 'from' 'os' 'import' bad='getcwd' >
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"""
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def transform(self, node, results):
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if u"name" in results:
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name = results[u"name"]
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name.replace(Name(u"getcwdu", prefix=name.prefix))
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elif u"bad" in results:
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# Can't convert to getcwdu and then expect to catch every use.
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self.cannot_convert(node, u"import os, use os.getcwd() instead.")
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return
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else:
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raise ValueError(u"For some reason, the pattern matcher failed.")
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