Premailer Usage

premailer_app.py

import premailer


def parse_template_tags(input_str):
    """ Premailer encodes paths in the src attribute of images, so we have to swap them out w original values here """
    mapping = (
        ('%7B%7B%20', '{{ '), ('%20%7D%7D', ' }}'),
        ('%7B%7B', '{{ '), ('%7D%7D', ' }}'),
    )
    for k, v in mapping:
        input_str = input_str.replace(k, v)

    return input_str


with open('input.html', 'r') as myfile:
    data = myfile.read()
    output = premailer.transform(data)
    output = parse_template_tags(output)
    print output
    target = open('output.html', 'w')
    target.write(output)