Nick Coghlan <[email protected]> added the comment:
I'd actually suggest that as the default behaviour (and is a good argument in
favour of a dedicated function in textwrap - both suggested alternatives will
blithely add whitespace to otherwise empty lines).
To handle the empty line requires either switching to an re.sub() based
solution or adding a conditional expression:
'\n'.join(((4 * ' ') + x if x else x) for x in s.splitlines())
I should probably also explicitly address the "why not textwrap.fill()?"
alternative: because fill() does a lot more than simple indenting.
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<http://bugs.python.org/issue13857>
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