CODEWITHSUNDEEP
python
hh_vv
hh_vv

Reputation: 33

how to use multiple boolean operators with list

I am fairly new to coding but stuck on one of these exercises;

"Write a program that accepts a date in the format DD/MM/YYYY and output whether or not the date is valid. For example 20/07/1969 is valid, but 31/09/2012 is not."

My attempt at this:

d = int(input("Enter a day"))
m = int(input("Enter a month"))
y = int(input("Enter a year"))

if d > 30 and m == [4, 6, 9, 11]:
     print("This date is invalid")

elif d > 31:
     print ("This date is invalid")

elif m != [1,2,3,4,5,6,7,8,9,10,11,12]:
     print ("This date is invalid")

else:
     print("This date is valid")

Any suggestions on how to fix this is appreciated

Upvotes: 0

Views: 54

Answers (2)

Adam Smith
Adam Smith

Reputation: 54273

To check membership in a list, use the in operator.

if d > 30 and m in [4, 6, 9, 11]:

Upvotes: 1

Sheldore
Sheldore

Reputation: 39072

You were close. Just modifying your code, the correct implementation of checking an entry m against multiple options, it would look like the following. To check for multiple options, you use in, for ex. if m in [4, 6, 9, 11] instead of ==.

if d > 30 and m in [4, 6, 9, 11]:
     print("This date is invalid")
elif d > 31:
     print ("This date is invalid")
elif m not in [1,2,3,4,5,6,7,8,9,10,11,12]:
     print ("This date is invalid")
else:
     print("This date is valid")

Upvotes: 2

Related Questions