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First solution in Clear category for Unlucky Days by kennmyers
import datetime
def checkio(year):
count = 0
for month in range(1,13):
d = datetime.date(year,month,13)
if d.weekday() == 4:
count += 1
return count
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert checkio(2015) == 3, "First - 2015"
assert checkio(1986) == 1, "Second - 1986"
March 13, 2016
