Python CGI - Revision history

Michael Murtaugh: /* Receive some text from a form */

2020-06-09T08:49:35Z

Receive some text from a form

← Older revision		Revision as of 10:49, 9 June 2020
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	=== Receive some text from a form ===		=== Receive some text from a form ===
	<source lang="python">		<source lang="python">
	#!/usr/bin/env ~~python~~		#!/usr/bin/env python3
	#-- coding:utf-8 --		#-- coding:utf-8 --

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	if text:		if text:
	print ("""<div style="border: 5px solid purple">""")		print ("""<div style="border: 5px solid purple">""")
	print text		print (text)
	print ("""</div>""")		print ("""</div>""")

Michael Murtaugh: /* Mini server */

2020-06-09T08:49:02Z

Mini server

← Older revision		Revision as of 10:49, 9 June 2020
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	=== Mini server ===		=== Mini server ===
	<source lang="bash">		<source lang="bash">
	~~python~~ -m http.server --cgi 8000		python3 -m http.server --cgi 8000
	</source>		</source>

Michael Murtaugh: /* RTFM */

2020-06-09T08:48:42Z

RTFM

← Older revision		Revision as of 10:48, 9 June 2020
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	</source>		</source>

	== ~~RTFM~~ ==		== Documentation ==

	Python has a CGI module that takes care of many things like working with values posted form a form or handling an uploaded file.		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~~		https://docs.python.org/3/library/cgi.html

	== Python CGI Checklist ==		== Python CGI Checklist ==

Michael Murtaugh at 08:48, 9 June 2020

2020-06-09T08:48:11Z

← Older revision		Revision as of 10:48, 9 June 2020
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			See: https://docs.python.org/3/library/cgi.html

	== Sample code ==		== Sample code ==
	=== Hello World ===		=== Hello World ===

Michael Murtaugh: /* Unicode issue with Apache */

2018-04-17T05:50:37Z

Unicode issue with Apache

← Older revision		Revision as of 07:50, 17 April 2018
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	=== Unicode issue with Apache ===		=== Unicode issue with Apache ===
	An unfortunate side-effect of python3 getting "smarter" about text encoding is that it depends on the enclosing environment to "do the right thing", that is, pick the right text encoding to use when you print stuff. In Apache unfortunately the default cgi environment has no encoding set, so python defaults back to ASCII (and often makes your cgi silently fail in the browser).		An unfortunate side-effect of python3 getting "smarter" about text encoding is that it depends on the enclosing environment to "do the right thing", that is, pick the right text encoding to use when you print stuff. In Apache unfortunately the default cgi environment has no encoding set, so python defaults back to ASCII (and often makes your cgi silently fail in the browser). The solution is to make sure Apache passes on the "LANG" environment variable from the system to the script. This is achieved by two small steps:

	* 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).		* 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.		* 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.
			Finally: make sure line similar to LANG="en_US.UTF-8" is present in /etc/default/locale (if it's not, you may need to reconfigure your shell environment to use utf-8).

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

Michael Murtaugh: /* Unicode issue with Apache */

2018-04-17T05:47:50Z

Unicode issue with Apache

← Older revision		Revision as of 07:47, 17 April 2018
Line 58:		Line 58:

	=== Unicode issue with Apache ===		=== Unicode issue with Apache ===
	An ~~unfortunately~~ side-effect of python3 getting "smarter" about text encoding is that it depends on the enclosing environment to "do the right thing", that is, pick the right text encoding to use when you print stuff. In Apache unfortunately the default cgi environment has no encoding set, so python defaults back to ASCII (and often makes your cgi silently fail in the browser).		An unfortunate side-effect of python3 getting "smarter" about text encoding is that it depends on the enclosing environment to "do the right thing", that is, pick the right text encoding to use when you print stuff. In Apache unfortunately the default cgi environment has no encoding set, so python defaults back to ASCII (and often makes your cgi silently fail in the browser).

	* 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).		* 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).

Michael Murtaugh: /* Unicode issue with Apache */

2018-04-17T05:47:37Z

Unicode issue with Apache

← Older revision		Revision as of 07:47, 17 April 2018
Line 58:		Line 58:

	=== Unicode issue with Apache ===		=== Unicode issue with Apache ===
			An unfortunately side-effect of python3 getting "smarter" about text encoding is that it depends on the enclosing environment to "do the right thing", that is, pick the right text encoding to use when you print stuff. In Apache unfortunately the default cgi environment has no encoding set, so python defaults back to ASCII (and often makes your cgi silently fail in the browser).

	* 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).		* 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).

Michael Murtaugh: /* Unicode issue with Apache */

2018-04-17T05:45:05Z

Unicode issue with Apache

← Older revision		Revision as of 07:45, 17 April 2018
Line 59:		Line 59:
	=== Unicode issue with Apache ===		=== 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.		* 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.		* Make sure line similar to LANG="en_US.UTF-8" is present in /etc/default/locale.

Michael Murtaugh: /* Unicode issue with Apache */

2018-04-17T05:42:44Z

Unicode issue with Apache

← Older revision		Revision as of 07:42, 17 April 2018
Line 58:		Line 58:

	=== Unicode issue with Apache ===		=== Unicode issue with Apache ===

			* Add PassEnv LANG line 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		https://stackoverflow.com/questions/9322410/set-encoding-in-python-3-cgi-scripts#19574801

Michael Murtaugh: /* Mini server */

2018-04-17T05:32:14Z

Mini server

← Older revision		Revision as of 07:32, 17 April 2018
Line 53:		Line 53:

	=== Mini server ===		=== Mini server ===
			<source lang="bash">
			python -m http.server --cgi 8000
			</source>

	=== Unicode issue with Apache ===		=== Unicode issue with Apache ===