Processing HTML form data using Python?

I am trying to use Python and HTML together. What I'm trying to do is create an HTML form that will pass data to a python file and that python file will process the data. But I am not going to work.

Here is my Python code:

form = cgi.FieldStorage() # instantiate only once!

name = form['Sample Name'].value

and this is my html code:

<form method='POST' action='/functionGen.py'> 
Name: <input type='text' name='Sample Name'> 
<input type='submit' value='Begin Storing'> 
</form>

What ultimately happens is just to see my python code in a browser, the file does not start processing data.

What can I do?