[New-bugs-announce] [issue23420] python -m cProfile -s fails with non informative message

[Robert Kuska]

New submission from Robert Kuska:

Originaly reported here: https://bugzilla.redhat.com/show_bug.cgi?id=1160640


I've forgotten to add the sort value to the -s option of cProfile which results in a traceback instead of user friendly error message. In the example below hello.py just prints a "Hello World":


$ python -m cProfile -s hello.py
Traceback (most recent call last):
  File "/usr/lib64/python2.6/runpy.py", line 122, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib64/python2.6/runpy.py", line 34, in _run_code
    exec code in run_globals
  File "/usr/lib64/python2.6/cProfile.py", line 190, in <module>
    main()
  File "/usr/lib64/python2.6/cProfile.py", line 185, in main
    parser.print_usage()
  File "/usr/lib64/python2.6/optparse.py", line 1597, in print_usage
    print >>file, self.get_usage()
  File "/usr/lib64/python2.6/optparse.py", line 1583, in get_usage
    self.expand_prog_name(self.usage))
  File "/usr/lib64/python2.6/optparse.py", line 1560, in expand_prog_name
    return s.replace("%prog", self.get_prog_name())
  File "/usr/lib64/python2.6/optparse.py", line 1555, in get_prog_name
    return os.path.basename(sys.argv[0])
IndexError: list index out of range

Tested with python2.7, python3.4 with the same result.

Attached patch adds `choices` for sort option of cProfile.

> $ python -m cProfile -s sdds.py                                                                                                     
Usage: cProfile.py [-o output_file_path] [-s sort] scriptfile [arg] ...

cProfile.py: error: option -s: invalid choice: 'sdds.py' (choose from 'cumulative', 'module', 'ncalls', 'pcalls', 'file', 'line', 'name', 'calls', 'stdname', 'nfl', 'filename', 'cumtime', 'time', 'tottime')

----------
components: Extension Modules
files: sort-choices.patch
keywords: patch
messages: 235602
nosy: rkuska
priority: normal
severity: normal
status: open
title: python -m cProfile -s fails with non informative message
type: enhancement
versions: Python 2.7, Python 3.4
Added file: http://bugs.python.org/file38053/sort-choices.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23420>
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