[Regex] Search and replace?

[Gilles Ganault]

Hello

I need to iterate through a variable, and for each pattern that
matches, replace this with something else.

I read the chapter in www.amk.ca/python/howto/regex/, but the output
is wrong:

=======
#Extract two bits, and rewrite the HTML
person = re.compile('<tr onMouseOver=(?P <item1>.+?)>.+? <a
onmouseover="Ti p(?P<item2>.+?) &nbsp;</td>')

output = person.sub('<tr onMouseOver=\1> <td><a
onmouseover="Ti p\2</td>', input)
=======

Does someone have a simple example handy so I can check what's wrong
with the above?

Thank you.

[Sion Arrowsmith]

Re: [Regex] Search and replace?

Gilles Ganault <nospam@nospam. comwrote:

>#Extract two bits, and rewrite the HTML
>person = re.compile('<tr onMouseOver=(?P <item1>.+?)>.+? <a onmouseover="Ti p(?P<item2>.+?) &nbsp;</td>')
>
>output = person.sub('<tr onMouseOver=\1> <td><a onmouseover="Ti p\2</td>', input)
>
>Does someone have a simple example handy so I can check what's wrong
>with the above?

Do you have an example of the input string which you're using? And
exactly how the output is "wrong"? At a wild guess, you mean your
substitution string to be:

'<tr onMouseOver=\\1 ><td><a onmouseover="Ti p\\2</td>' or
r'<tr onMouseOver=\1> <td><a onmouseover="Ti p\2</td>'

(note the backslash escaping).

Oh, and don't use "input" as a name -- you're shadowing the builtin
input function.

--
\S -- siona@chiark.gr eenend.org.uk -- http://www.chaos.org.uk/~sion/
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