Chap10/cgi-bin/friendsB.py

#!/usr/bin/env python

import cgi

header = 'Content-Type: text/html\n\n'

formhtml = '''<html><head><title>
Friends CGI Demo</title></head>
<body><h3>Friends list for: <i>New User</i></h3>
<form action="/cgi-bin/friendsB.py">
<b>Enter your Name: </b>
<input type=hidden name=action value=edit>
<input type=text name=person value="NEW USER" size=15>
<p><b>How many friends do you have?</b>
%s
<p><input type=submit></form></body></html>'''

fradio = '<input type=radio name=howmany value="%s" %s> %s\n'

def showForm():
    friends = []
    for i in (0, 10, 25, 50, 100):
        checked = ''
        if i == 0:
            checked = 'checked'
        friends.append(fradio % (str(i), checked, str(i)))
    print '%s%s' % (header, formhtml % ''.join(friends))

reshtml = '''<html><head><title>
Friends CGI Demo</title></head>
<body><h3>Friends list for: <i>%s</i></h3>
Your name is: <b>%s</b><p>
You have <b>%s</b> friends.
</body></html>'''

def doResults(who, howmany):
    print header + reshtml % (who, who, howmany)

def process():
    form = cgi.FieldStorage()

    if 'person' in form:
        who = form['person'].value
    else:
        who = 'NEW USER'
    
    if 'howmany' in form:
        howmany = form['howmany'].value
    else:
        howmany = 0
    
    if 'action' in form:
        doResults(who, howmany)
    else:
        showForm()

if __name__ == '__main__':
    process()