How to add elif statement to all if statements-CodePudding

Write a program that takes a date as input and outputs the date's season. The input is a string to represent the month and an int to represent the day.

Ex: If the input is:

April 11 the output is:

Spring In addition, check if the string and int are valid (an actual month and day).

Ex: If the input is:

Blue 65 the output is:

Invalid

input_month = input()
input_day = int(input())

if input_month == ('March'):
    if 20 <= input_day <= 31:
        print('Spring')
if input_month == ('April' or 'May'):
    if 1 <= input_day <= 31:
        print('Spring')
if input_month == ('June'):
    if 0 <= input_day <= 20:
        print('Spring')   
if input_month == ('June'):
    if 21 <= input_day <= 30:
        print('Summer')
if input_month == ('July' or 'August'):
    if 1 <= input_day <= 31:
        print('Summer')
if input_month == ('September'):
    if 0 <= input_day <= 21:
        print('Summer')
if input_month == ('September'):
    if 22 <= input_day <= 30:
        print('Autumn')
if input_month == ('October' or 'November'):
    if 1 <= input_day <= 31:
        print('Autumn')
if input_month == ('December'):
    if 0 <= input_day <= 20:
        print('Autumn')
if input_month == ('December'):
    if 21 <= input_day <= 31:
        print('Winter')
if input_month == ('January' or 'February'):
    if 1 <= input_day <= 31:
        print('Winter')
if input_month == ('March'):
    if 0 <= input_day <= 19:
        print('Winter')
else: 
    input_month != 'January' or input_month != 'February' or input_month != 'March' or input_month != 'April' or input_month != 'May' or input_month != 'June' or input_month != 'July' or input_month != 'August' or input_month != 'September' or input_month != 'October' or input_month != 'November' or input_month != 'December'
    print('Invalid')
if 0 >= input_day >= 32:
    print('Invalid')

I keep getting the output as

Spring
Invalid

when it should just be the season

CodePudding user response：

Correct syntax to combine two conditions using logical or operator.

if x == "something" or x == "another thing":

Or you can use in operator instead

if x in [str1,str2]:

CodePudding user response：

There are several ways you could organize this. I think the simplest would be to group the conditions based on the output they need to produce. In other words, the line print("Spring") should only appear once:

if ((input_month == "March" and 20 <= input_day <= 31)
or  (input_month == "April" and 1  <= input_day <= 30)
or  (input_month == "May"   and 1  <= input_day <= 31)
or  (input_month == "June"  and 1  <= input_day <= 20)):
    print("Spring")
elif ((input_month == "June"      and 21 <= input_day <= 30)
or    (input_month == "July"      and 1  <= input_day <= 31)
or    (input_month == "August"    and 1  <= input_day <= 31)
or    (input_month == "September" and 1  <= input_day <= 21)):
    print("Summer")
# more elifs here
else:
    print("Invalid")