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from lib2to3 import fixer_base, pytree
from lib2to3.fixer_util import Name, BlankLine, Name, Attr, ArgList
class FixBrokenReraising(fixer_base.BaseFix):
PATTERN = """
raise_stmt< 'raise' any ',' val=any ',' tb=any >
"""
# run before the broken 2to3 checker with the same goal
# tries to rewrite it with a rule that does not work out for jinja
run_order = 1
def transform(self, node, results):
tb = results['tb'].clone()
tb.prefix = ''
with_tb = Attr(results['val'].clone(), Name('with_traceback')) + \
[ArgList([tb])]
new = pytree.Node(self.syms.simple_stmt, [Name("raise")] + with_tb)
new.prefix = node.prefix
return new
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