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21 lines
594 B
Python
21 lines
594 B
Python
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"""Fixer to change b('string') into b'string'."""
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# Author: Daniele Varrazzo
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import token
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from lib2to3 import fixer_base
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from lib2to3.pytree import Leaf
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class FixB(fixer_base.BaseFix):
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PATTERN = """
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power< wrapper='b' trailer< '(' arg=[any] ')' > rest=any* >
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"""
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def transform(self, node, results):
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arg = results['arg']
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wrapper = results["wrapper"]
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if len(arg) == 1 and arg[0].type == token.STRING:
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b = Leaf(token.STRING, 'b' + arg[0].value, prefix=wrapper.prefix)
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node.children = [ b ] + results['rest']
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