CODEWITHSUNDEEP
python
Isaiah Guillory
Isaiah Guillory

Reputation: 107

How do I use comparison symbols with input in python

I'm trying to make a program that will respond to someones age but I can't figure out how to use the comparison symbols. Here is the code I'm trying to run,

age = input('How old are you? \n >>')
if (age < 20):
    print('Hey you are pretty young.')
if (age > 20):
    print('wow you are pretty old')

But when I try to run this I get this Error,

Traceback (most recent call last):
  File "C:/Users/Daniel/Desktop/Computer science/week 6/age.py", line 2, in <module>
    if (age < 20):
TypeError: '<' not supported between instances of 'str' and 'int'

Upvotes: 2

Views: 192

Answers (1)

Jan
Jan

Reputation: 43169

What you get as input is a string, you need to cast it to an int before you can compare it:

age = int(input('How old are you? \n >>'))

Better yet, add some error handling, e.g.:

try:
    age = int(input('How old are you? \n >>'))

except ValueError as ex:
    print("Not a valid age.")

Upvotes: 3

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