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Regex fun

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Advanced +4 pts

Regular Expressions

Learn some Python regular expressions by completing the following three functions.

Each function recieves a text string with different content, it's up you parse out and return the text described in each function's docstring.

Note: normally when we parse HTML we use a library of some sort. This Bite helps you appreciate the work that goes into those libraries!

Topics

re findall regular expressions

Code
Tests

import re

COURSE = ('Introduction 1 Lecture 01:47'
          'The Basics 4 Lectures 32:03'
          'Getting Technical!  4 Lectures 41:51'
          'Challenge 2 Lectures 27:48'
          'Afterword 1 Lecture 05:02')
TWEET = ('New PyBites article: Module of the Week - Requests-cache '
         'for Repeated API Calls - http://pybit.es/requests-cache.html '
         '#python #APIs')
HTML = ('<p>pybites != greedy</p>'
        '<p>not the same can be said REgarding ...</p>')

def extract_course_times(course=COURSE):
    """Return the course timings from the passed in
       course string. Timings are in mm:ss (minutes:seconds)
       format, so taking COURSE above you would extract:
       ['01:47', '32:03', '41:51', '27:48', '05:02']
       Return this list.
    """
    pass

def get_all_hashtags_and_links(tweet=TWEET):
    """Get all hashtags and links from the tweet text
       that is passed into this function. So for TWEET
       above you need to extract the following list:
       ['http://pybit.es/requests-cache.html',
        '#python',
        '#APIs']
       Return this list.
    """
    pass

def match_first_paragraph(html=HTML):
    """Extract the first paragraph of the passed in
       html, so for HTML above this would be:
       'pybites != greedy' (= content of first paragraph).
       Return this string.
    """
    pass

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