for some reason this isnt working

[lokchi2017]

import datetime

def inputYear(msg, errmsg, l, h):
    done = 0
    while (not done):
        try:
            ans = input(msg)
            global year
            year = int(ans)
            if (year < l) or (year > h):
                print(errmsg)
            else:
                done = 1
                return year
        except:
            print(errmsg)

def inputMonth(msg, errmsg, l, h):
    done = 0
    while (not done):
        try:
            ans = input(msg)
            month = int(ans)
            if (month < l) or (month > h):
                print(errmsg)
            else:
                done = 1
                return month
        except:
            print(errmsg)

def inputDay(msg, errmsg, l, h):
    done = 0
    while (not done):
        try:
            ans = input(msg)
            day = int(ans)
            if (day < l) or (day > h):
                print(errmsg)
            elif month == (4,6,9,11):
                if day == 30:
                    print(errmsg)
            elif month == 2:
                if year % 4 >= 1 and day >= 29:
                    print(errmsg)
            else:
                done = 1
                return day
        except:
            print(errmsg)

print(inputYear('Please input year(1-9999)', 'Please input a valid year', 1, 9999))
print(inputMonth('Please input month(1-12)', 'Please input a valid month', 1, 12))
print(inputDay('Please input day(1-31)', 'Please input a valid day', 1, 31))

[buran]

this isnt working is not very descriptive...
It does not produce desired result? It ends with error? In case of error - post the full traceback in error tags..

[lokchi2017]

does this

print(errmsg)

[perfringo]

What is the desired result? Some sort of date validation? Is there reason that it is done separately for year, month and day?

I observed that datetime is imported but not used.