<pre> 
#!/usr/bin/env python3
#=====================================================================================
# Retrieve all parameters from an HTML form 
#=====================================================================================
import os
import HTTPparam

print("Content-Type: text/html \n")             #required cgi header

print('''                                                
    &lt;html>
    &lt;head>
    &lt;title>Process an HTML form&lt;/title>
    &lt;/head>
    &lt;body bgcolor=lightyellow>
    &lt;h1>&lt;center>The Ice Cream Shop&lt;/center>&lt;/h1>
    &lt;h2>Process data from another page&lt;/h2>
''')                                 

method = os.environ.get('REQUEST_METHOD')
print(F"You are using the &lt;b>{method}&lt;/b> method &lt;br>&lt;br>") 

print('''     
    &lt;table border=2>
    &lt;tr bgcolor=tan>
    &lt;th>Element Name&lt;/th>&lt;th>Element Value&lt;/th>
''') 

firstname  = HTTPparam.getValue('firstname')             #get HTML form field value or None if nothing 
lastname   = HTTPparam.getValue('lastname')                
address    = HTTPparam.getValue('address')
brand      = HTTPparam.getValue('brand')         
flavor     = HTTPparam.getValue('flavor')                #flavor is a list
topping1   = HTTPparam.getValue('topping1')   or ""                
topping2   = HTTPparam.getValue('topping2')   or ""      #if None is returned set it to ""                
topping3   = HTTPparam.getValue('topping3')   or ""                
topping4   = HTTPparam.getValue('topping4')   or ""                
creditCard = HTTPparam.getValue('creditCard') or ""    

if firstname  == None : firstname  = ""                 #another way to clean None         
if lastname   == None : lastname   = ""                 #if nothing is entered you get None
if address    == None : address    = ""                 #if None clear the field         
if brand      == None : brand      = ""         
if flavor     == None : flavor     = ""         
            
flavor2 = ""
if type(flavor) is list :                               #if it is a list
    flavor2 = ','.join(flavor)                          #join it into a string , separated          

print("&lt;tr>&lt;th>Firstname&lt;/th>   &lt;td>", firstname,  "&lt;/td>") 
print("&lt;tr>&lt;th>Lastname&lt;/th>    &lt;td>", lastname,   "&lt;/td>") 
print("&lt;tr>&lt;th>Address&lt;/th>     &lt;td>", address,    "&lt;/td>") 
print("&lt;tr>&lt;th>Brand&lt;/th>       &lt;td>", brand,      "&lt;/td>") 
print("&lt;tr>&lt;th>Flavor&lt;/th>      &lt;td>", flavor2,    "&lt;/td>") 
print("&lt;tr>&lt;th>Topping&lt;/th>     &lt;td>", topping1,topping2,topping3,topping4, "&lt;/td>") 
print("&lt;tr>&lt;th>Credit Card&lt;/th> &lt;td>", creditCard, "&lt;/td>") 

print('''
    &lt;/table>
    &lt;/body>
    &lt;/html>
''')


#=== link to see the python code =================================================
import os, sys
sys.path.insert(0,'/home/staff/sultan/public_html/cgi-bin/python')
import zCode                          #import func to display the Python code
filename = os.path.abspath(__file__)  #get absolute file name 
zCode.display(filename)               #call it
#=================================================================================


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