Python CGI: Difference between revisions

Revision as of 06:45, 17 April 2018

Sample code

Hello World

#!/usr/bin/python
print ("Content-type: text/html;charset=utf-8\n")
print ("Hello world!")

Dump the env!

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import cgi
cgi.print_environ()

Receive some text from a form

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import cgitb; cgitb.enable()
import cgi

q = cgi.FieldStorage()
text = q.getvalue("text", "")
print ("Content-type: text/html;charset=utf-8\n")

# Print any received text in a purple box
print ("""<h1>Hello</h1>""")
if text:
    print ("""<div style="border: 5px solid purple">""")
    print text
    print ("""</div>""")

# Print the form
print ("""<form method="get" action="">
<textarea name="text"></textarea>
<input type="submit" />
</form>""")

RTFM

Python has a CGI module that takes care of many things like working with values posted form a form or handling an uploaded file.

http://docs.python.org/2/library/cgi.html#module-cgi

Python CGI Checklist

Python CGI checklist

Python 3

Mini server

python -m http.server --cgi 8000

Unicode issue with Apache

Add PassEnv LANG to your site settings (sites-available/000-default.conf inside the <VirtualHost> or to the end of your /etc/apache2/apache2.conf or .htaccess).
Uncomment . /etc/default/locale line in /etc/apache2/envvars.
Make sure line similar to LANG="en_US.UTF-8" is present in /etc/default/locale.

https://stackoverflow.com/questions/9322410/set-encoding-in-python-3-cgi-scripts#19574801

A simple test CGI...

#!/usr/bin/env python3
import sys
import cgitb; cgitb.enable()

print('Content-Type: text/html; charset=utf-8')
print()
print('<html><body><pre>' + sys.stdout.encoding + '</pre>h€lló wörld<body></html>')

@@ Line 59: / Line 59: @@
 === Unicode issue with Apache ===
-* Add PassEnv LANG line to the end of your /etc/apache2/apache2.conf or .htaccess.
+* Add PassEnv LANG to your site settings (sites-available/000-default.conf inside the <VirtualHost> or to the end of your /etc/apache2/apache2.conf or .htaccess).
 * Uncomment . /etc/default/locale line in /etc/apache2/envvars.
 * Make sure line similar to LANG="en_US.UTF-8" is present in /etc/default/locale.