[issue13857] Add textwrap.indent() as counterpart to textwrap.dedent()

[Ezra Berch]

Ezra Berch <ezraberch at mac.com> added the comment:

I've created a patch using the conditional expression in msg151945. The one problem I found with it is that when the input string is terminated by a newline it removes that newline.

I've added an optional third argument: a function which determines which lines are indented. If omitted, the default behavior is to indent non-empty lines.

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keywords: +patch
nosy: +ezberch
Added file: http://bugs.python.org/file24374/indent.patch

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