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bpo-33224: PEP 479 fix for difflib.mdiff() (GH-6381)

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Raymond Hettinger 2018-04-05 11:19:57 -07:00 • committed by GitHub
parent 7286dbd8b2
commit 01b731fc2b
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3 changed files with 22 additions and 8 deletions
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20
Lib/difflib.py
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@ -1634,14 +1634,18 @@ def _line_pair_iterator():
lines_to_write -= 1
# Now yield the context lines after the change
lines_to_write = context-1
while(lines_to_write):
from_line, to_line, found_diff = next(line_pair_iterator)
# If another change within the context, extend the context
if found_diff:
lines_to_write = context-1
else:
lines_to_write -= 1
yield from_line, to_line, found_diff
try:
while(lines_to_write):
from_line, to_line, found_diff = next(line_pair_iterator)
# If another change within the context, extend the context
if found_diff:
lines_to_write = context-1
else:
lines_to_write -= 1
yield from_line, to_line, found_diff
except StopIteration:
# Catch exception from next() and return normally
return
_file_template = """