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#1565525: Add traceback.clear_frames() helper function to clear locals ref'd by a traceback

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This commit is contained in:
Andrew Kuchling 2013-09-15 18:15:56 -04:00
parent 8408dc581e
commit 173a157e72
5 changed files with 62 additions and 1 deletions
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13
Lib/traceback.py
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@ -7,7 +7,8 @@ import operator
__all__ = ['extract_stack', 'extract_tb', 'format_exception',
'format_exception_only', 'format_list', 'format_stack',
'format_tb', 'print_exc', 'format_exc', 'print_exception',
'print_last', 'print_stack', 'print_tb']
'print_last', 'print_stack', 'print_tb',
'clear_frames']
#
# Formatting and printing lists of traceback lines.
@ -299,3 +300,13 @@ def extract_stack(f=None, limit=None):
stack = list(_extract_stack_iter(_get_stack(f), limit=limit))
stack.reverse()
return stack
def clear_frames(tb):
"Clear all references to local variables in the frames of a traceback."
while tb is not None:
try:
tb.tb_frame.clear()
except RuntimeError:
# Ignore the exception raised if the frame is still executing.
pass
tb = tb.tb_next