Most Pythonique, Efficient, Compact, and Elegant Way to Do This

Given a list of strings, how would you iterpolate a multi-character string in front of each element? For example, given:
    >>> k = ['the quick', 'brown fox', 'jumps over', 'the lazy', 'dog']
The objective is to get:
    ['-c', 'the quick', '-c', 'brown fox', '-c', 'jumps over', '-c', 'the lazy', '-c', 'dog']
Of course, the naive solution would be to compose a new list by iterate over the original list:
    >>> result = []
    >>> for i in k:
    ...     result.append('-c')
    ...     result.append(i)
Alternatively, you could take advantage of the itertools module:
    >>> import itertools
    >>> result = list(itertools.chain.from_iterable(itertools.product(['-c'], k)))
This second form is certainly more compact, and probably more efficient ... but perhaps lacks some of the clarity and elegance one might expect from Python. Is there another solution?

One Comment

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>