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Jul 10, 2008, 6:59 AM
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[issue3332] DocTest and dict sort.
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New submission from Jens Diemer <bugs.python.org [at] jensdiemer>:
The doctest doesn't work good, if a function returns a dict.
Here a simple example:
def test(d):
"""
This works:
>>> test({"A":1, "B":2, "C":3})
{'A': 1, 'C': 3, 'B': 2}
This failed, because of different dict sort:
>>> test({"A":1, "B":2, "C":3})
{'A': 1, 'B': 2, 'C': 3}
The Error messages:
Failed example:
test({"A":1, "B":2, "C":3})
Expected:
{'A': 1, 'B': 2, 'C': 3}
Got:
{'A': 1, 'C': 3, 'B': 2}
"""
return d
The problem is IMHO that doctest.py [1] OutputChecker.check_output()
does compare the repr() of the dict and not the real dict as data.
One solution: Use eval() to convert the string repr. of the dict into
the real dict:
...
#-----<add>-----
try:
if eval(got) == eval(want):
return True
except:
pass #*pfeif* kein schoener stil, aber pragmatisch
#-----</add>----
# We didn't find any match; return false.
return False
German discuss can be found here:
http://www.python-forum.de/topic-15321.html
[1] http://svn.python.org/view/python/trunk/Lib/doctest.py?view=markup
----------
components: Extension Modules
messages: 69501
nosy: jedie
severity: normal
status: open
title: DocTest and dict sort.
type: behavior
versions: Python 2.5
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<http://bugs.python.org/issue3332>
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