[issue13548] Invalid 'line' tracer event on pass within else clause

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

(Snippet examples can be made 2/3 agnostic with 
from __future__ import print_function)

3.2.2 on win7, IDLE, gives me
F:\Python\mypy\tem.py 7 call
F:\Python\mypy\tem.py 8 line
F:\Python\mypy\tem.py 10 line
F:\Python\mypy\tem.py 11 line
F:\Python\mypy\tem.py 13 line
F:\Python\mypy\tem.py 13 return
...
Commenting out else:pass or changing pass to r=2 changes the output to
F:\Python\mypy\tem.py 7 call
F:\Python\mypy\tem.py 8 line
F:\Python\mypy\tem.py 10 line
F:\Python\mypy\tem.py 11 line
F:\Python\mypy\tem.py 11 return

Looking as the dis outputs of the three versions, I find the difference of behavior somewhat puzzling.

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nosy: +terry.reedy
versions: +Python 3.3 -Python 2.6, Python 3.1

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<http://bugs.python.org/issue13548>
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