days_from_date.py

from datetime import date
import sys
import re
import calendar

def cleanDate(date_):
    date_.replace(' ','')
    date_.replace(',','')
    date_.replace('/','')
    return date_ 

def getYearMonthDay(date_):    
    day , year = map(int,re.findall(r'\d+',date_))
    month = ''.join(re.findall(r'[a-zA-Z]',date_)).capitalize()
    month_num = list(calendar.month_abbr).index(month[:3])
    
    return year,month_num,day

def numOfDays(year,month_num,day):
    days = date(year,month_num,day).timetuple()[-2]
    
    return days


date_ = sys.argv[1]

date_ = cleanDate(date_)
year,month_num,day = getYearMonthDay(date_)
print(numOfDays(year,month_num,day) - 1)