How to multiple variable inputs for a single output | Python

Question

fairly new to python, and coding in general. I am following an online guide for a simple Python function, but I want to edit it so I can learn more it. I want to know how my function can look for a variety of inputs via the user that will activate the same output. For example, I want 'Yes' and 'yes' to output the same text.

choice = raw_input('Do you like YouTube videos?  ')
if choice == 'yes' :
    print 'I like YouTube videos too!'
elif choice == 'no' :
    print 'Damn, you suck'
else :
    print '*invalid answer*'

the classic way is to use a set : `if choice.lower() in {'yes', 'y','yup'}` (`.lower()` just avoids to write all caps versions) — PRMoureu, Nov 09 '17 at 22:33
Possible duplicate of [How do I test multiple variables against a value?](https://stackoverflow.com/questions/15112125/how-do-i-test-multiple-variables-against-a-value) — PRMoureu, Nov 09 '17 at 22:38

score 0 · Accepted Answer · answered Nov 09 '17 at 22:35

Simplest version:

choice = raw_input('Do you like YouTube videos?  ')
if choice == 'yes'  or choice == 'Yes':
    print 'I like YouTube videos too!'
elif choice == 'no' :
    print 'Damn, you suck'
else :
    print '*invalid answer*'

However you can compare user output without taking of case sensivity:

if choice.lower() == 'yes':

score 0 · Answer 2 · answered Nov 09 '17 at 22:37

This code will explain you and will cover all test cases

//Asks for user input    
choice = raw_input('Do you like YouTube videos?  ')
// Convert Input to lower case or upper 
choice = choice.lower()
//so Now you have lower all the character of user input you just need to compare it with lower letter 
if choice == 'yes' :
print 'I like YouTube videos too!
elif choice == 'no' : 
print 'Damn, you suck'
else : 
print 'invalid answer'

score 0 · Answer 3 · answered Nov 09 '17 at 22:53

In addition to lower casing the letters, you may want to also consider using strip() to remove extra spaces from the begining and end of your string. For example:

answer = "Yes "

if answer == "Yes":
    print("Pass")
else:
    print("Fail!")
// output = Fail!

However,

answer = "Yes "

if answer.strip() == "Yes":
    print("Pass")
else:
    print("Fail!")
// output = pass

As a result and generally speaking, lower casing, using strip(), and all of these similar operations are a kind of pre-processing step and cleaning that you may need to do based on the specific task on which you are working. Just wanted to give you the big picture here!

How to multiple variable inputs for a single output | Python

3 Answers3