Core Python Programming (2nd Edition)

Both friends.html and friends1.py are merged together as friends2.py. The resulting
script can now output both form and results pages as dynamically generated HTML and has
the smarts to know which page to output.
1 #!/usr/bin/env python
2
3 import cgi
4
5 header = 'Content-Type: text/html\n\n'
6
7 formhtml = '''
8 Friends CGI Demo
9 Friends list for: NEW USER
10
11 Enter your Name:
12
13
14 How many friends do you have?
15 %s
16 '''
17
18 fradio = ' %s\n'
19
20 def showForm():
21 friends = ''
22 for i in [0, 10, 25, 50, 100]:
23 checked = ''
24 if i == 0:
25 checked = 'CHECKED'
26 friends = friends + fradio % \
27 (str(i), checked, str(i))
28
29 print header + formhtml % (friends)
30
31 reshtml = '''
32 Friends CGI Demo
33 Friends list for: %s
34 Your name is: %s
35 You have %s friends.
36 '''
37
38 def doResults(who, howmany):
39 print header + reshtml % (who, who, howmany)
40
41 def process():
42 form = cgi.FieldStorage()
43 if form.has_key('person'):
44 who = form['person'].value
45 else:
46 who = 'NEW USER'
47
48 if form.has_key('howmany'):
49 howmany = form['howmany'].value
50 else:
51 howmany = 0
52
53 if form.has_key('action'):
54 doResults(who, howmany)