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
def main():
print "Content-type: text/html\n"
form = cgi.FieldStorage()
# if form.has_key("coatSize") and form.has_key("usedPockets") and
form.has_key("labSpace") and form.has_key("totalJunkies") and
form.has_key("DVR") and form["coatSize"].value != "" and
form["usedPockets"].value != "" and form["labSpace"].value != "" and
form["totalJunkies"].value != "" and form["DVR"].value != "":
Tokens = 0
coatSize = form["coatSize"].value
usedPockets = form["usedPockets"].value
labSpace = form["labSpace"].value
totalJunkies = form["totalJunkies"].value
DVR = form["DVR"].value
while usedPockets > totalJunkies - labSpace * 17:
Tokens = Tokens + 1
usedPockets = (usedPockets - totalJunkies + labSpace) * 17
totalJunkies = totalJunkies + 1
print "Tokens"
# else:
# print "Try again"
main()
Here's the error using the CGI Traceback Module -
D:\inetpub\vhosts\newspyn.com\cgi-bin\JunkieCalc.py
21 print "Tokens"
22 # else:
23 # print "Try again... beeyatch"
24
25 main()
main = <function main>
D:\inetpub\vhosts\newspyn.com\cgi-bin\JunkieCalc.py in main()
15 DVR = form["DVR"].value
16
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'",)
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'
Thanks in advance for any help :)
----- Original Message -----
From: "Eric Brunson" <[EMAIL PROTECTED]>
To: "Darren Williams" <[EMAIL PROTECTED]>
Cc: <tutor@python.org>
Sent: Monday, July 16, 2007 12:50 PM
Subject: Re: [Tutor] CGI Calculator
> Darren Williams wrote:
>> Hi all,
>> I am a Python convert coming from a JavaScript background
>
> Welcome to Python, Darren.
>
>> (as you can probably tell) and am currently writing my first application
>> using Python which will be a calculator for an online game I used to play
>> (thought it would be a decent first project) but am not sure on the
>> syntax for referencing an HTML form input field, I tried this (which
>> returns an error) -
>> XHTML form -
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
>> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";>
>> <html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en">
>> <head>
>> <title>DopeWars Junkie Calculator</title>
>> </head>
>> <body>
>> <center>
>> <form method="post"
>> action="http://newspyn.com/cgi-bin/JunkieCalc.py";>
>> <p><b>Coat Size:</b> <input type="text" name="coatSize">
>> <p><b>Used Pockets:</b> <input type="text"
>> name="usedPockets">
>> <p><b>Lab Space:</b> <input type="text" name="labSpace">
>> <p><b>Total Junkies:</b> <input type="text"
>> name="totalJunkies">
>> <p><b>Dealer Visits Remaining:</b> <input type="text"
>> name="DVR">
>> <p><input type="submit" value="Submit">
>> </form>
>> </body>
>> </html>
>> junkieCalc.py -
>> #!/usr/bin/env python
>> import cgi
>> def main():
>> print "Content-type: text/html\n"
>> form = cgi.FieldStorage()
>> if form.has_key("coatSize") and form.has_key("usedPockets") and
>> form.has_key("labSpace") and form.has_key("totalJunkies") and
>> form.has_key("DVR") and form["coatSize"].value != "" and
>> form["usedPockets"].value != "" and form["labSpace"].value != "" and
>> form["totalJunkies"].value != "" and form["DVR"].value != "":
>> Tokens = 0
>> while usedPockets > (totalJunkies - labSpace) * 17:
>> Tokens = Tokens + 1
>> usedPockets = (usedPockets - totalJunkies + labSpace) * 17
>> totalJunkies = totalJunkies + 1
>> print "Tokens"
>> else:
>> print "Try again"
>> main()
>> This is the error i'm getting -
>> Traceback (most recent call last): File
>> "D:\inetpub\vhosts\newspyn.com\cgi-bin\JunkieCalc.py", line 23, in ?
>> main() File "D:\inetpub\vhosts\newspyn.com\cgi-bin\JunkieCalc.py", line
>> 10, in main while usedPockets > (totalJunkies - labSpace) * 17:
>> UnboundLocalError: local variable 'usedPockets' referenced before
>> assignment
>
> So, you get an error on line 10, which is:
>
> while usedPockets > (totalJunkies - labSpace) * 17:
>
> and it says that your variable is referenced before assignment. Have you
> assigned a value to it? In your intro you ask how to reference an HTML
> form field, well you're already doing it in your if statement:
> form["labSpace"].value, so if you want a local variable named usedPockets,
> you should assign a value to it, like: usedPockets =
> form["usedPockets"].value
>
>
> As an aside, a nice tool for helping debug CGI scripts is the CGI
> Traceback module. Add this as the first line of the program (after the
> shebang line, before the import cgi:
>
> import cgitb; cgitb.enable()
>
> Hope that helps,
> e.
>
>> Thanks in advance for any help :)
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Tutor maillist - Tutor@python.org
>> http://mail.python.org/mailman/listinfo/tutor
>>
>
>
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http://mail.python.org/mailman/listinfo/tutor
