John Machin <[EMAIL PROTECTED]> writes:
> Uh-oh.
>
> Try this:
>
>>>> pat = re.compile('(?<=abc\n).*?(?=xyz\n)', re.DOTALL)
>>>> re.sub(pat, '', linestr)
> 'blahfubarabc\nxyz\nxyzzy'
This regexp still has a problem. It may remove the lines between two
lines like 'aaabc' and 'xxxyz' (and also removes the first two 'x's in
'xxxyz').
The following regexp works better:
pattern = re.compile('(?<=^abc\n).*?(?=^xyz\n)', re.DOTALL | re.MULTILINE)
>>> lines = '''line1
... abc
... line2
... xyz
... line3
... aaabc
... line4
... xxxyz
... line5'''
>>> pattern = re.compile('(?<=^abc\n).*?(?=^xyz\n)', re.DOTALL | re.MULTILINE)
>>> print pattern.sub('', lines)
line1
abc
xyz
line3
aaabc
line4
xxxyz
line5
>>>
- Baoqiu
--
Baoqiu Cui <cbaoqiu at yahoo.com>
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