CGI module does not parse data

**Fredrik Lundh** · Dec 1 '05, 10:55 PM

Re: CGI module does not parse data

"amfr" wrot3e:
[color=blue]
> I am writing a webserver, and I want it to be able to run python
> scripts. But when I set sys.stdin to self.rfile (using the
> BaseHTTPServer class, self.rfile is a input stream containing the
> request), the cgi module does not parse the data.
> Example script:
> import cgi
> form = cgi.FieldStorag e()
> print form["testfield"]
>
> The above script would print nothing. Should i be setting sys.stdin to
> something else, or is there anthoer solution entirely?[/color]

are you writing your own CGIHTTPServer ?

Page not found — Python 3.14.4 documentation

http://docs.python.org/lib/module-CGIHTTPServer.html

why ?

</F>

**amfr** · Dec 1 '05, 11:15 PM

Re: CGI module does not parse data

I have included some of the content of that file, I am writing this as
an extension to my ebserver which is based on BaseHTTPServer. This
part of the code was taken directly from the CGIHTTPServer file,
nothing changed

**amfr** · Dec 1 '05, 11:35 PM

Re: CGI module does not parse data

I just read somewhere that the CGIHTTPServer module does not work on
mac (which I am currently using), is this true?

**Peter Hansen** · Dec 2 '05, 02:45 AM

Re: CGI module does not parse data

amfr wrote:[color=blue]
> I just read somewhere that the CGIHTTPServer module does not work on
> mac (which I am currently using), is this true?[/color]

It might help a lot if you could include a link to "somewhere" , so we'd
know what "does not work" meant... often it means one particular feature
is not perfect, as opposed to "crashes and burns" or "does nothing at
all"...

Also, someone who has it "working" on a Mac hasn't necessarily tried out
the entire range of functionality so the thing you read might still be
correct.

-Peter

**Mardy** · Dec 2 '05, 01:55 PM

Re: CGI module does not parse data

Le die Thu, 01 Dec 2005 15:08:14 -0800, amfr ha scribite:
[color=blue]
> I have included some of the content of that file, I am writing this as
> an extension to my ebserver which is based on BaseHTTPServer. This
> part of the code was taken directly from the CGIHTTPServer file,
> nothing changed[/color]

I did the same, it is working for me. About Mac problems, the only thing I
know is that in the code of CGIHTTPServer itself a comment says that
execfile() is the only way to run a CGI on Mac. But it should work.

Maybe it's just your browser, which doesn't show you the output of the
CGI. Did you try connecting to the webserver by telnet?

--
Saluti,
Mardy

http://interlingua.altervista.org

**amfr** · Dec 2 '05, 08:25 PM

Re: CGI module does not parse data

I am using execfile, setting stdin and stdout like this:
sys.stdin = self.wfile
sys.stdout = self.rfile
execfile(filena me)

Its the same code used in the CGIHTTPServer module. I know that the
python is executing corretly, a script with this content would work:

print "<html>"
print "<head>"
print "<title>"
print "blah"
print "</title>"
print "</head>
print "<body>"
print "test"
print "</body>"
print "</html>"

but this would not (lets say i submitted a form with the value of test
being "hello world"):

import cgi
form = cgi.FieldStorag e()
print form["test"]
print "test"

I would only be able to see "test", not "hello world"
I am sure its not my browser

**Tim Roberts** · Dec 4 '05, 01:55 AM

Re: CGI module does not parse data

"amfr" <amfr.org@gmail .com> wrote:[color=blue]
>
>import cgi
>form = cgi.FieldStorag e()
>print form["test"]
>print "test"
>
>I would only be able to see "test", not "hello world"
>I am sure its not my browser[/color]

Did you mean:

print form["test"].value
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

**Mardy** · Dec 4 '05, 07:55 PM

Re: CGI module does not parse data

Le die Fri, 02 Dec 2005 12:18:28 -0800, amfr ha scribite:[color=blue]
> import cgi
> form = cgi.FieldStorag e()
> print form["test"]
> print "test"
>
> I would only be able to see "test", not "hello world"
> I am sure its not my browser[/color]

As Tim said, you have tu use "form['test'].value", because "print
form['test']" will make pythoun output something like this:
<form object at ....>
and your browser won't show it, mistaking it as an HTML tag.

--
Saluti,
Mardy

http://interlingua.altervista.org

**amfr** · Dec 16 '05, 10:55 PM

Re: CGI module does not parse data

Neither work

**Steve Holden** · Dec 17 '05, 03:15 AM

Re: CGI module does not parse data

amfr wrote:[color=blue]
> Neither work
>[/color]
But you don't give us any further information to go on.

Are you importing cgitb and calling cgitb.enable() to trap and print any
errors that might occur?

Are you looking in the browser at the HTM source (view source) of the
page your server is returning to see more closely waht your browser is
receiving, rather than what it's displaying?

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC www.holdenweb.com
PyCon TX 2006 www.python.org/pycon/

**Devan L** · Dec 17 '05, 03:25 AM

Re: CGI module does not parse data

amfr wrote:[color=blue]
> I am writing a webserver, and I want it to be able to run python
> scripts. But when I set sys.stdin to self.rfile (using the
> BaseHTTPServer class, self.rfile is a input stream containing the
> request), the cgi module does not parse the data.
> Example script:
> import cgi
> form = cgi.FieldStorag e()
> print form["testfield"]
>
> The above script would print nothing. Should i be setting sys.stdin to
> something else, or is there anthoer solution entirely?[/color]
try this before trying to print:
print "Content-Type: text/html\n"

**Tim Roberts** · Dec 19 '05, 12:45 AM

Re: CGI module does not parse data

"amfr" <amfr.org@gmail .com> wrote:[color=blue]
>
>Neither work[/color]

Yes, they do.

Post your form HTML and the Python code you're using, and we'll show you
what you're doing wrong.
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

CGI module does not parse data

CGI module does not parse data

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