Added exception in set_pub_year_month_day for publications that do n…

[scuerda]

Running PubMedLookup on 25156302 returns a proper object. Passing that object to Publication raises an uncaught TypeError as follows

>>> r = PubMedLookup(25156302, 'email')
>>> Publication(r)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/home/scuerda/Projects/timi/lib/python3.4/site-packages/pubmed_lookup/pubmed_lookup.py", line 41, in __init__
    self.set_pub_year_month_day(xml_dict)
  File "/home/scuerda/Projects/timi/lib/python3.4/site-packages/pubmed_lookup/pubmed_lookup.py", line 203, in set_pub_year_month_day
    month_short, "%b").month
TypeError: must be str, not None

Added TypeError to exception handling, which properly handles missing month.

[mfcovington]

Thanks!

[mfcovington]

Now released on PyPI as 0.1.5.

[scuerda]

Welcome and thank you. This has saved me a lot of work.

[mfcovington]

Happy that it has been helpful. Unless it is super secret, I'd love to hear what sort of project you use it for sometime.