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First solution in Clear category for Unlucky Days by kiazo1
import datetime
def checkio(year):
return [datetime.datetime(year, month, 13).weekday() for month in range(1,13)].count(4) # 4 is Friday
"""
count = 0
for month in range(1, 13):
day = datetime.datetime(year, month, 13).weekday()
if datetime.datetime(year, month, 13).weekday() == 4: # Friday
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 31, 2016
