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template engine code

Let’s get to know the yate code before proceeding with the rest of this chapter. For each chunk
of code presented, provide a written description of what you think it does in the spaces provided:

Write your
T ake a moment to from string import Template explanations in
look up the “T emplate” the spaces.
module in Python’s
documentation set.

def start_response(resp="text/html"):
return('Content-type: ' + resp + '\n\n')
One has already This function takes a single (optional) string as its argument and uses it to
been done for you.
create a CGI “Content-type:” line, with “text/html” as the default.

def include_header(the_title):
with open('templates/header.html') as headf:
head_text = headf.read()
header = Template(head_text)
return(header.substitute(title=the_title))

def include_footer(the_links):
with open('templates/footer.html') as footf:
foot_text = footf.read()
link_string = ''
for key in the_links:
link_string += '<a href="' + the_links[key] + '">' + key +
'</a> '
footer = Template(foot_text)
return(footer.substitute(links=link_string))

228 Chapter 7