FAQ: Data Types - Boolean

This community-built FAQ covers the “Boolean” exercise from the lesson “Data Types”.

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This exercise can be found in the following Codecademy content:

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FAQs on the exercise Boolean

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Can anyone tell me how I can input the Boolean on python to turn a system on and off. I would like SysON to be true an SysOff to be false. Would I enter it in that way or another way?

Are SystemOn and SystemOff specific commands to do something? I couldn’t find anything, so I made some up:

def SystemOn():
    print("True, so system is now on.")
    
def SystemOff():
    print("False, so system is now off.")


while True:
    prop = input("Enter a boolean proposition, such as 3>4. \nEnter q to quit\n")
    if prop == 'q':
        break
    is_true = (eval(prop))
    
    if is_true:
        SystemOn()
    else:
        SystemOff()

If the user enters a statement that evaluates to True, function SystemOn() runs; if False, SystemOff() runs. The eval() function does the work.