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

print("Content-Type: text/html \n")                         #required HTTP response 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 HTML form data using custom HTTPparam module&lt;/h2>    
''')

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

params = HTTPparam.getGET() or {}                             #access the GET form data as a dict
print('GET params:', params,'&lt;br>')                     #display the returned params as a dict

params = HTTPparam.getPOST() or {}                           #access the POST form data as a dict
print('POST params:', params,'&lt;br>')                    #display the returned params as a dict

params = HTTPparam.getAll() or {}                             #access all form data as a dict
print('All params:', params,'&lt;br>')                     #display the returned params as a dict

param = HTTPparam.getValue('hello') or ''                     #access a single param value
print('Param: hello=', param,'&lt;br>')                    #display the value

param = HTTPparam.getValue('firstname') or ''                 #access a single param value
print('Param: firstname=', param,'&lt;p>')                 #display the value

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

for (name, value) in params.items():
    if type(value) is list:                                 #if it is a list
        value = ', '.join(value)                            #join it into a string , separated
    print(F'&lt;tr>&lt;td>{name}&lt;/th>&lt;th>{value}&lt;/td>&lt;/tr>')

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
#=================================================================================


</pre>