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Fixes tzname return type #7705

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Merged
merged 1 commit into from
Dec 29, 2016
Merged

Fixes tzname return type #7705

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2 changes: 1 addition & 1 deletion lib/matplotlib/dates.py
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Original file line number Diff line number Diff line change
Expand Up @@ -159,7 +159,7 @@ def utcoffset(self, dt):
return datetime.timedelta(0)

def tzname(self, dt):
return "UTC"
return str("UTC")

def dst(self, dt):
return datetime.timedelta(0)
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5 changes: 5 additions & 0 deletions lib/matplotlib/tests/test_dates.py
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Expand Up @@ -465,6 +465,11 @@ def test_DayLocator():
mdates.DayLocator(interval=1.0)


def test_tz_utc():
dt = datetime.datetime(1970, 1, 1, tzinfo=mdates.UTC)
dt.tzname()
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Why not check the return value of dt.tzname() rather than making this just a smoke test?

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I should add that my big complaint here is that this test, while exercising the method, does nothing to actually catch the original problem.

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This does, the exception is coming out of datetime

Python 2.7.13 |Continuum Analytics, Inc.| (default, Dec 20 2016, 23:09:15)                                                                                                                                                                                                                                                                                                                                                              
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>>> import matplotlib.dates as mdates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
>>> import datetime                                                                                                                                                                                                                                                                                                                                                                                                                     
>>> dt = datetime.datetime(1970, 1, 1, tzinfo=mdates.UTC)                                                                                                                                                                                                                                                                                                                                                                               
>>> dt.tzname()                                                                                                                                                                                                                                                                                                                                                                                                                         
Traceback (most recent call last):                                                                                                                                                                                                                                                                                                                                                                                                      
  File "<stdin>", line 1, in <module>                                                                                                                                                                                                                                                                                                                                                                                                   
TypeError: tzinfo.tzname() must return None or a string, not 'unicode'                                                                                                                                                                                                                                                                                                                                                                  
>>>

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AH. I see now. My mistake.



if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)