I'm doing some checks before adding the country of citizenship (P27) to persons. The check is quite simple: Did the country already exist during the lifetime of a person. Seemed to work quite well so I was puzzled to see this edit: https://www.wikidata.org/w/index.php?title=Q4271168&type=revision&diff=388967975&oldid=306952066
Peter Le Lievre (Q4271168) lived 1812-1878 and United Kingdom (Q145) has inception (P571) 12 April 1927. Why did the bot add it?
Code to reproduce:
import pywikibot
repo = pywikibot.Site().data_repository()
# Our person is Peter Le Lievre (https://www.wikidata.org/wiki/Q4271168 )
personitem = pywikibot.ItemPage(repo, u'Q4271168')
persondata = personitem.get()
personclaims = persondata.get('claims')
dateofbirth = personclaims.get(u'P569')[0].getTarget()
dateofdeath = personclaims.get(u'P570')[0].getTarget()
# Suggested country is United Kingdom ( https://www.wikidata.org/wiki/Q145
countryitem = pywikibot.ItemPage(repo, u'Q145')
countrydata = countryitem.get()
countryclaims = countrydata.get('claims')
countryinception = countryclaims.get(u'P571')[0].getTarget()
print dateofbirth
print dateofdeath
print countryinception
# Dateofbirth is smaller than dateofdeath so I expect true here
print dateofbirth < dateofdeath
# Dateofbirth is smaller than countryinception so I expect true here
print dateofbirth < countryinception
# BUG!Looking at https://docs.python.org/2/reference/datamodel.html#basic-customization the solution is probably to implement either cmp ( https://docs.python.org/2/reference/datamodel.html#object.__cmp__ ) or the more specific ones:
- object.lt(self, other)
- object.le(self, other)
- object.eq(self, other)
- object.ne(self, other)
- object.gt(self, other)
*object.ge(self, other)
From the manual: " If no cmp(), eq() or ne() operation is defined, class instances are compared by object identity (“address”)."
Probably easiest to just compare the output for both toTimestr()