Darren Williams wrote:
> Ok, now i've modified my script but am getting another error, i've
> commented a few useless (hopefully) lines out -
>
> #!/usr/bin/env python
>
> import cgitb; cgitb.enable()
> import cgi
>
>
[snip]
> 17 while usedPockets > totalJunkies - labSpace * 17:
>
> 18 Tokens = Tokens + 1
>
> 19 usedPockets = (usedPockets - totalJunkies +
> labSpace) * 17
>
> usedPockets = '192000', totalJunkies = '200', labSpace = '0'
>
> TypeError: unsupported operand type(s) for -: 'str' and 'str'
> args = ("unsupported operand type(s) for -: 'str' and 'str'",)
>
What does "dog" - "cat" mean? Similarly, what does "100" - "12" mean?
It's not the same in Python as 100 - 12, because those are numbers,
"100" and "12" are strings which happen to represent numbers.
You need to coerce those strings into integers, maybe like this:
usedPockets = int(form["usedPockets"].value)
When you do that, you'll probably need to catch any exception that could
occur if the string can't be converted.
>
>
> It's confused me - it says I can't subtract a string from a string but
> then gives the value's of the variables (that I randomly entered into
> the form) at the bottom - usedPockets = '192000', totalJunkies =
> '200', labSpace = '0'
>
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