Re: Python Dialogs (Posting On Python-List Prohibited)

Assume you have an expression "s.replace('a','b').replace('c','d').
replace('e','f').replace('g','h')". Its value is a string which
is the value of s, but with "a" replaced by "b", "c" replaced by
"d", "e" replaced by "f" and "g" replaced by "h". How to modify
this expression, so that "a", "c", "e", and "g", respectively,
are replaced only if they are words (but not parts of words)?

    import re

    replacements = (("a", "b"), ("c", "d"), ("e", "f"), ("g", "h"))

    text = "this be a test g eg"

    "".join \
      (
        repl.get(s, s)
        for repl in (dict(replacements),)
        for s in
            re.split("\b(" + "|".join(re.escape(s[0]) for s in replacements) + ")\b", text)
      )

result:

    'this be b test h eg'