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What's wrong with this Python code?

I am very new, so just learn, so please, please!

start = int(input('How much did you start with?:' ))
if start < 0:
    print("That impossible!  Try again.")
    print(start = int(input('How much did you start with:' )))
if start >= 0:
    print(inorout = raw_input('Cool!  Now have you put money in or taken it out?: '))
    if inorout == in:
        print(in = int(raw_input('Well done!  How much did you put in?:')))
        print(int(start + in))

Does this always result in a syntax error? I'm sure I am doing something obvious wrong!

Thanks!

-1


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3 answers


  • You cannot assign variables in expressions in Python, like in C: print (start = int (input ('blah'))) is wrong. First complete the assignment on a separate statement.
  • The first line should not be indented, but it might just be a copy and paste error.
  • Word in

    is a reserved word, so you cannot use it for variable names


+7


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Assignment in operators is your problem. Moving pins from reports



+3


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  • Consider prompting for input using a function that wraps a loop.
  • Don't use input for generic user input, use raw_input instead
  • Wrap your script execution in a main function so it doesn't execute on import
def ask_positive_integer(prompt, warning="Enter a positive integer, please!"):
    while True:
        response = raw_input(prompt)
        try:
            response = int(response)
            if response < 0:
                print(warning)
            else:
                return response
        except ValueError:
            print(warning)

def ask_in_or_out(prompt, warning="In or out, please!"):
    '''
    returns True if 'in' False if 'out'
    '''
    while True:
        response = raw_input(prompt)
        if response.lower() in ('i', 'in'): return True
        if response.lower() in ('o', 'ou', 'out'): return False
        print warning

def main():
    start = ask_positive_integer('How much did you start with?: ')
    in_ = ask_in_or_out('Cool!  Now have you put money in or taken it out?: ')
    if in_:
        in_amount = ask_positive_integer('Well done!  How much did you put in?: ')
        print(start + in_amount)
    else:
        out_amount = ask_positive_integer('Well done!  How much did you take out?: ')
        print(start - out_amount)

if __name__ == '__main__':
    main()
0


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