Python "classobj" error
Question: I have this code and I couldn't run it because i get this error: "TypeError:
'classobj' object is not subscriptable" and here is my code:

    
    
    import cgi
    import customerlib
    
    form=cgi.FieldStorage
    
    history = customerlib.find(form["f_name"].value,form["l_name"].value)
    
    
    print "Content-type: text/html"
    print
    print """<html>
      <head>
        <title>Purchase history</title>
      </head>
      <body>
        <h1>Purchase History</h1>"""
    
    print "<p>you have a purchase history of:"
    for i in history: "</p>"
       print"""  <body>
    </html>"""
    

I have the customerlib file beside this file. Any idea how to fix it?


Answer: 
    form=cgi.FieldStorage
    

`FieldStorage` is a class, not an object. You need to instantiate it to create
a `FieldStorage` object:

    
    
    form=cgi.FieldStorage()
    

It is erroring on `form["f_name"]` because form is currently an alias for the
class of `FieldStorage`, not an object of type `FieldStorage`. By
instantiating it, it's doing what you think it should be doing.

Check out the [cgi module
documentation](http://docs.python.org/library/cgi.html) for more detailed
information on how to use the CGI module.

