mutliple search and replace

[Carel Fellinger]

Trung Hoang <thoa0025 at mail.usyd.edu.au> wrote:
> hey Gustavo,

> actually i wished to do the replacement in one sweep and occuring in any
> order.. to avoid problems.. is it easy?

yes it is, use re.sub and remember the repl param to re.sub can be any
Python callable too, like:

    >>> import re
    >>> def OneSweep(replacements, txt):
    ...     def repl(match):
    ...         return replacements[match.group()]
    ...     matching = "|".join([re.escape(x) for x in replacements])
    ...     return re.sub(matching, repl, txt)
    ...
    >>> txt = "SPAM and eggs or spam and EGGS"
    >>> print OnesWeep({"SPAM": "spam", "spam": "SPAM"}, txt)
    spam and eggs or SPAM and EGGS
-- 
groetjes, carel