The template itself is a class witch receives a string as its argument. The simplest form of a templating engine substitues values into the template to produce the output:

from string import Template

//defination

t = Template("$who works in $which company, and earns $$ $howmuch one month")

//substitute dollar $ sign with values:

print t.substitute(who="Danniel", which="Google", howmuch="10K")

the OUTPUT:

'Danniel works in Google company, and earns $ 10K one month'