How to have user true/false input in python?

Question

I\'m new to python.

I want the program to ask

\"is Johnny hungry? True or false?\"

user inputs True then print is

Answer 1

You can turn something into True or False using bool:

>>> bool(0)
False
>>> bool("True")
True
>>> bool("")
False

But there is a problem with a user entering "True" or "False" and assuming we can turn that string into a bool:

>>> bool("False")
True

This is because a string is considered truthy if it's not empty.

Typically, what we do instead is allow a user to enter a certain subset of possible inputs and then we tell the user that only these values are allowed if the user enters something else:

user_answer = input("Is johnny hungry ").lower().strip()
if user_answer == "true":
    # do something
elif user_answer == "false":
    # do something else
else:
    print("Error: Answer must be True or False")