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Python: Validate a Gregorian date

Python Datetime: Exercise-53 with Solution

Write a Python program to validate a Gregorian date. The month is between 1 and 12 inclusive, the day is within the allowed number of days for the given month. Leap year’s are taken into consideration. The year is between 1 and 32767 inclusive.

Sample Solution:

Python Code:

import datetime
def check_date(m, d, y):
    try:
        m, d, y = map(int, (m, d, y))
        datetime.date(y, m, d)
        return True
    except ValueError:
        return False

print(check_date(11, 11, 2002))
print(check_date('11', '11', '2002'))
print(check_date(13, 11, 2002))

Sample Output:

True
True
False

Flowchart:

Flowchart: Validate a Gregorian date.

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Python: Tips of the Day

Generator comprehension:

# A generator comprehension is the lazy version of a list comprehension.
>>> m = (x ** 2 for x in range(5))
>>> m
<generator object <genexpr> at 0x108efe408>
>>> list(m)
[0, 1, 4, 9, 16]

>>> m = (x ** 2 for x in range(5))
>>> next(m)
0
>>> list(m)
[1, 4, 9, 16]