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

def get_bool(prompt):
while True:
    try:
        return {"si": True, "no": False}[input(prompt).lower()]
    except KeyError:
        print ("Invalido ingresa por favor si o no!")

    respuesta = get_bool("Quieres correr este programa: si o no")

if (respuesta == True):
    x = 0
else:
    x = 2

Answer 2

johnnyHungry = input("Is johnny hungry ")
if johnnyHungry == "True":
...

I expect that you can take it from there?

Answer 3

I hope this code works for you. Because I already tried this code and it worked fine.

johnnyHungry = str(input("Is johnny hungry ")) 

def checking(x):
    return 'yes' == True
    return 'no' == False

if checking(johnnyHungry) == True:
    print("Johnny needs to eat.")
elif checking(johnnyHungry) == False:
    print("Johnny is full.")

I'm sorry if it's long, I'm new to programming either.

Answer 4

you can use a simple helper that will force whatever input you want

def get_bool(prompt):
    while True:
        try:
           return {"true":True,"false":False}[input(prompt).lower()]
        except KeyError:
           print "Invalid input please enter True or False!"

print get_bool("Is Jonny Hungry?")

you can apply this to anything

def get_int(prompt):
    while True:
        try:
           return int(input(prompt))
        except ValueError:
           print "Thats not an integer silly!"

Answer 5

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")

Answer 6

You could just try bool(input("...")) but you would get into trouble if the user doesn't input a bool. You could just wrap it in a try statement.