[Tutor] can this be done easerly

[Steven D'Aprano]

On Mon, 30 Aug 2010 07:44:06 pm Roelof Wobben wrote:
> Hello,
>
>
>
> For a exerise I made this one :"
>
>
>
> import string
>
> def extract_words(s):
[...]

> But now I wonder if this can be done more easerly ?


def extract_words(s):
    """
    >>> extract_words('Now is the time!  "Now", is the time?')
    ['now', 'is', 'the', 'time', 'now', 'is', 'the', 'time']
    >>> extract_words('she tried to curtsy as she spoke--fancy')
    ['she', 'tried', 'to', 'curtsy', 'as', 'she', 'spoke', 'fancy']
    """
    s = s.lower()
    # Replace anything that isn't a letter with a space.
    chars = [c if c.isalpha() else " " for c in s]
    s = ''.join(chars)
    words = s.split()
    return words


import doctest
doctest.run_docstring_examples(extract_words, globals())
print extract_words("Hello, world! I ate 6 slices of cheese.")

=> prints:
['hello', 'world', 'i', 'ate', 'slices', 'of', 'cheese']




-- 
Steven D'Aprano