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This gives the week day you were born based on your birthdate. (mm-dd-yy)

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birthdate.py
Python
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anonymous / gist:5220817
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Find the week day you were born on based on your birthdate (mm-dd-yyy)
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gistfile1.pyPython
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import sys
# Find day of week of birthdate
# call birthdate mm-dd-yy format
# Used to check the digits on the input birthay to determine if the layout works
# def Birth_day(date) :
# mm = int(date[0:2])
# dd = int(date[3:5])
# yy = int(date[6:])
# return mm, dd, yy
#Calculates the first portion of the doomsday calculation
#that feeds into Year_step_2
def Year_step_1(date):
yy = int(date[8:])
if yy%2 == 0:
div_date = yy/2
else:
div_date = (yy+11)/2
return div_date
#This portion of code determines how many days off from the Standard
#doomsday the year in question is. All years in the 1900s have a base doomsday
#of Wednesday, all 2000's have a base doomsday of Thursday.
def Year_step_2(date):
div_date = Year_step_1(date)
if div_date%2 == 0:
mod_date = div_date%7
else:
mod_date = (div_date+11)%7
return 7 - mod_date
#This portion of code checks wether the birthday is in the 1900's or the
#2000's so the base doomsday can be adjusted. the week is based on the
#Sunday through Saturday week with Sunday as zero "0" and Saturday as six "6"
def Anchor_finder(date):
yyxx = int(date[6:8])
if yyxx == 19:
anchor = 3
if yyxx == 20:
anchor = 4
return anchor
#this code is used to output the numerical day of the week to be used to
#adjust from the Anchor date to the birthdate input. This code can be uncommented to
#output the human readable day of the week.
def Doomsday(date):
weekday = (Anchor_finder(date) + Year_step_2(date))%7
day_of_week = ['Sunday', 'Monday','Tuesday','Wednesday','Thursday','Friday','Saturday']
return weekday
# if weekday == 0:
# return day_of_week[0]
# if weekday == 1:
# return day_of_week[1]
# if weekday == 2:
# return day_of_week[2]
# if weekday == 3:
# return day_of_week[3]
# if weekday == 4:
# return day_of_week[4]
# if weekday == 5:
# return day_of_week[5]
# if weekday == 6:
# return day_of_week[6]
#This code determines if the year in question is a leap year or not.
#Leap years require that the anchor date in a given month need to be changed.
def Leap_year(date):
year = int(date[6:])
leap_year = 0
if year%400 == 0:
leap_year = 1
elif year%100 == 0:
leap_year = 0
elif year%4 == 0:
leap_year = 1
else:
leap_year = 0
return leap_year
#This code uses the input from the above calculations to determine
#what day of the week the birthday is on.
def User_Day(date):
leap_year = Leap_year(date)
doomsday = Doomsday(date)
anchor = (Anchor_finder(date) + Year_step_2(date))%7
mm = int(date[0:2])
dd = int(date[3:5])
if leap_year == 1:
month = [0,4,22,14,4,9,6,4,8,5,10,7,12]
elif leap_year == 0:
month = [0,3,14,14,4,9,6,4,8,5,10,7,12]
if month[mm] < dd:
ndd = dd - month[mm]
ndd = abs(ndd)
diff = ndd%7
week_day = doomsday + diff
week_day = abs(week_day)%7
else:
ndd = month[mm] - dd
ndd = abs(ndd)
diff = ndd%7
week_day = doomsday + 7 - diff
week_day = abs(week_day)%7
return int(week_day)#, anchor, diff, ndd, dd
def Day_of_week(date):
weekday = User_Day(date)
day_of_week = ['Sunday', 'Monday','Tuesday','Wednesday','Thursday','Friday','Saturday']
if weekday == 0:
return day_of_week[0]
if weekday == 1:
return day_of_week[1]
if weekday == 2:
return day_of_week[2]
if weekday == 3:
return day_of_week[3]
if weekday == 4:
return day_of_week[4]
if weekday == 5:
return day_of_week[5]
if weekday == 6:
return day_of_week[6]
else:
return 'ERROR'
def main():
if len(sys.argv[1]) != 10:
print 'Your year must be in a 4 digit form mm-dd-yyy'
sys.exit(1)
else:
date = sys.argv[1]
# print Birth_day(date)
# print Year_step_2(date)
# print Anchor_finder(date)
# print 'Doomsday is',Doomsday(date)
print 'You were born on a', Day_of_week(date)
# print User_Day(date),'User_Day'
if __name__ == '__main__':
main()
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