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Fix a bug in traceback.format_exception_only() that led to an error

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being raised when print_exc() was called without an exception set.
In version 2.4, this printed "None", restored that behavior.
 (backport from rev. 51995)
This commit is contained in:
Georg Brandl 2006-09-24 12:50:28 +00:00
parent a6b9ce185e
commit edd81b2402
3 changed files with 9 additions and 1 deletions
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2
Lib/traceback.py
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@ -170,7 +170,7 @@ def format_exception_only(etype, value):
# would throw another exception and mask the original problem.
if (isinstance(etype, BaseException) or
isinstance(etype, types.InstanceType) or
type(etype) is str):
etype is None or type(etype) is str):
return [_format_final_exc_line(etype, value)]
stype = etype.__name__