CGI module problem: duplicated output

Mimal · Jan 9, 2004

Hello,
I started to learn how to use python with CGI. I went through some
tutorials, but then I found one problem, that seems to be something
stupid. I tried to find answer using google, but I couldn't.

This is my simple CGI script:

#!/usr/bin/python
import cgi

print "Content-type: text/html\n"
print "<html>Hello, world!</html>"

After I run it under Apache I got (HTML source code):

Hello, world!Content-type: text/html Hello, world!

I tried to run it under bash console. I got this:

<html>Hello, world!</html>
Content-type: text/html

<html>Hello, world!</html>

That's very strange for me. I'm using Mandrake 9.2 + Apache 2 + Python
2.3, but the same problem occurs under WinNT + Python 2.1 and WinXP +
Zope + Python 2.3.

Thanks in advance for help!

Tim Roberts · Jan 10, 2004

Mimal said:
Hello,
I started to learn how to use python with CGI. I went through some
tutorials, but then I found one problem, that seems to be something
stupid. I tried to find answer using google, but I couldn't.

This is my simple CGI script:

#!/usr/bin/python
import cgi

print "Content-type: text/html\n"
print "<html>Hello, world!</html>"

Pardon me for saying so, but I don't believe you. Your script must
actually look like this:

#!/usr/bin/python
import cgi

print "<html>Hello, world!</html>"
print "Content-type: text/html\n"
print "<html>Hello, world!</html>"

That's the only answer that fits your results, and it would produce exactly
the results you describe.

Mimal · Jan 12, 2004

Pardon me for saying so, but I don't believe you. Your script must

actually look like this:

Pardon me too, but I know what my script looks like. I'm not such a
fool! I've tested this script under Windows NT + Python 2.1 and Windows
XP + Python 2.3 with the same result.

To prove you, I copied YOUR code and pasted to *.py file. Than I made it
executable and run it using console (./cgi.py). This is what it showed:

<html>Hello, world!</html>
Content-type: text/html

<html>Hello, world!</html>
<html>Hello, world!</html>
Content-type: text/html

<html>Hello, world!</html>

I know it's very strange. I don't get it and that's why I need help.

=?ISO-8859-1?Q?J=F8rgen_Cederberg?= · Jan 12, 2004

Mimal said:
Pardon me too, but I know what my script looks like. I'm not such a
fool! I've tested this script under Windows NT + Python 2.1 and Windows
XP + Python 2.3 with the same result.

To prove you, I copied YOUR code and pasted to *.py file. Than I made it
executable and run it using console (./cgi.py). This is what it showed:

<html>Hello, world!</html>
Content-type: text/html

<html>Hello, world!</html>
<html>Hello, world!</html>
Content-type: text/html

<html>Hello, world!</html>

I know it's very strange. I don't get it and that's why I need help.

No it is not strange. What you didn't mention in your first posting is
that you named your file cgi.py. Thus, when you run your script, you
start of by importing it, and therefore the messages are printed twice.

How about renaming it to mimal_cgi.py!

Regards
Jorgen

Mimal · Jan 12, 2004

How about renaming it to mimal_cgi.py!

For a second I thought: "That's it!" Unfortunately, that doesn't seem to
help. I renamed the file and I got the same. :-(

Matt Goodall · Jan 12, 2004

Mimal said:
For a second I thought: "That's it!" Unfortunately, that doesn't seem
to help. I renamed the file and I got the same. :-(

Check there is no cgi.pyc from when the script was still called cgi.py.

Cheers, Matt

Mimal · Jan 12, 2004

Check there is no cgi.pyc from when the script was still called cgi.py.

Thanks a lot!!! That was it! I should think about the name of the
script. I knew it must be something silly.

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CGI module problem: duplicated output

Mimal

Tim Roberts

Mimal

=?ISO-8859-1?Q?J=F8rgen_Cederberg?=

Mimal

Matt Goodall

Mimal

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