Python on the web: How to get a list of all available Python modules

If you want to get a complete list of Python modules available on your web host, you can do so with the following code: #!/usr/bin/python import os print “Content-type: text/html\n\n”; print “<html><head></head>” print “<body bgcolor=’#ffffff’>” print “\n<BR><b>Available Modules:</b><BR>” # List all installed packages print ‘<ul>’ dist_list = [] for dist in __import__(‘pkg_resources’).working_set: dist_list.append(dist.project_name.replace(‘Python’, ”).strip()) dist_list … Continue reading Python on the web: How to get a list of all available Python modules

Python on the web: How to delete cookies in a CGI script

After you have a cookie that has been set, here is how you can delete it. The trick is to send an update to the cookie where you feed it an expiration date that is already in the past. For example: print “Set-Cookie: xml_edit_tool=Value of cookie; ‘expires=Wed, 28 Aug 2013 18:30:00 GMT’ \r\n” Note: When … Continue reading Python on the web: How to delete cookies in a CGI script

Python on the web: How to update cookies in a CGI script

Once you’ve retrieved a cookie via a function that returns the cookie as a dictionary of key value pairs, you can update the cookie in nearly the same way that you originally set the cookie. The only difference is that this time you can set different values. In this example, I am passing the retrieved … Continue reading Python on the web: How to update cookies in a CGI script

Python on the web: How to get a CGI script to recognize two submit buttons with separate values in one form

In one of my Python cgi scripts I have a web form with some hidden values, text fields, and two submit buttons. I want my cgi script to do something different depending on which submit button was clicked. One of the submit buttons is for completing a review without making any changes and is called … Continue reading Python on the web: How to get a CGI script to recognize two submit buttons with separate values in one form

Python on the web: How to use Environment variables to detect script path

If you are writing Python scripts to run from the cgi-bin of your website, here is some code that will allow the script to detect it’s own path, so that it doesn’t have to be hard coded. The preferable way is to use the environment variable ‘SCRIPT_URI’. For example: this_script = os.environ[‘script_uri’] Note: Depending on … Continue reading Python on the web: How to use Environment variables to detect script path