<pre> 
#!/usr/bin/python3
###################################################################################
# Set cookies
# Using HTTP header "Set-Cookie:"
# All cookies must be written before html output
###################################################################################
from urllib import parse

print('Content-Type: text/html')

print('Set-Cookie: fname=Sam')                                  #temporary cookie
print('Set-Cookie: greeting1=Hello_World; max-age=86400')       #expires after 1 full day

goodbye = parse.quote('Goodbye World/Adios')                    #encoded with %20 and %2F
print('Set-Cookie: greeting2=' + goodbye)                       #create the encoded cookie                    

print('\n')                                                     #required end of headers

print("""
&lt;html>
    &lt;body>
        &lt;h1>Setting Cookies - Using HTTP Headers&lt;/h1>
        &lt;h2>Some web page&lt;/h2>
        &lt;h4>This page has set 3 cookies: 
        &lt;br>'fname=Sam'
        &lt;br>'greeting1=Hello_World'
        &lt;br>'greeting2=Goodbye World/Adios'&lt;/h4>
    &lt;/body>
&lt;/html>
""")


#=== link to see the python code =================================================
import os, sys
sys.path.insert(0,'/home/s/sultans/web/python/demo')
import zCode                          #import func to display the Python code
filename = os.path.abspath(__file__)  #get absolute file name 
zCode.display(filename)               #call it
#=================================================================================</pre>