New submission from Doug Hellmann:
Under python 2.7 using the "run" command within pdb and passing it arguments
causes those arguments to be printed out. Under 3.5, this is no longer true.
$ python2.7 -m pdb pdb_run.py
> /Users/dhellmann/Dropbox/PyMOTW/Python3/pymotw-3/source/pdb/pdb_run.py(7)<module>()
-> import sys
(Pdb) c
('Command-line args:', ['pdb_run.py'])
The program finished and will be restarted
> /Users/dhellmann/Dropbox/PyMOTW/Python3/pymotw-3/source/pdb/pdb_run.py(7)<module>()
-> import sys
(Pdb) run a b c "this is a long argument"
Restarting pdb_run.py with arguments:
a b c this is a long argument
> /Users/dhellmann/Dropbox/PyMOTW/Python3/pymotw-3/source/pdb/pdb_run.py(7)<module>()
-> import sys
$ python3.5 -m pdb pdb_run.py
> /Users/dhellmann/Dropbox/PyMOTW/Python3/pymotw-3/source/pdb/pdb_run.py(7)<module>()
-> import sys
(Pdb) c
Command-line args: ['pdb_run.py']
The program finished and will be restarted
> /Users/dhellmann/Dropbox/PyMOTW/Python3/pymotw-3/source/pdb/pdb_run.py(7)<module>()
-> import sys
(Pdb) run a b c "this is a long argument"
Restarting pdb_run.py with arguments:
pdb_run.py
> /Users/dhellmann/Dropbox/PyMOTW/Python3/pymotw-3/source/pdb/pdb_run.py(7)<module>()
-> import sys
It looks like the issue is in the pdb main loop. Under 2.7 the restart logic
has:
except Restart:
print "Restarting", mainpyfile, "with arguments:"
print "\t" + " ".join(sys.argv[1:])
but under 3.5 that was changed to:
except Restart:
print("Restarting", mainpyfile, "with arguments:")
print("\t" + " ".join(args))
The do_run() method has already reset sys.argv before throwing Restart, so to
print the correct arguments sys.argv[1:] should be used.
----------
files: pdb_run.py
keywords: 3.5regression
messages: 257785
nosy: doughellmann
priority: normal
severity: normal
status: open
title: regression in pdb output between 2.7 and 3.5
type: behavior
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file41538/pdb_run.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26053>
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