str.capitalize(): returns a copy of the string with only its first character capitalized.
months = ['January',
'February',
'March',
'April',
'May',
'June',
'July',
'August',
'September',
'October',
'November',
'December']
def valid_month(month):
if month:
cap_month = month.capitalize()
if cap_month in months:
return cap_month
use dictionary to restrict only three character.
month_abbvs = dic((m[:3].lower(), m) for m in months)
def valid_month(month):
if month:
short_month = month[:3].lower()
return month_abbvs.get(short_month)
checking day
def valid_day(day):
if day and day.isdigit():
day = int(day)
if day > 0 and <= 31:
return day
