At 10:17 PM 5/17/2008, Gabriel Genellina wrote:
En Sat, 17 May 2008 23:37:16 -0300, Dick Moores <[EMAIL PROTECTED]> escribió:
> I have a text file of phone numbers, which I'd like to search with a regex.
>
> fstr = "\sjoe\s"
> regex = "^.*" + fstr + ".*$"
>
> fstr = "\sjoe\s"
> regex = "r'^.*" + fstr + ".*$'"
The r"..." is a signal to the parser - meaning
"don't interpret the escape characters here".
Note that the r is OUTSIDE the quotes. In your
example, the escape characters are in fstr, so
it should be written as r"\sjoe\s"
However, (please refer back to my original post)
I want to keep the fstr, ultimately to be the
string entered by the user who knows a bit about
regex, but not how to use r' ' . Or
alternatively, not assume any knowledge of regex,
but build in some options, such as ignoring/not
ignoring case, searching on just a string, or on
a word. So I want to know how to build the user's
fstr into regex. I apologize for not making this clear.
Now, if you want "the lines that contain the
word joe surrounded by space", just use:
import re
regex = r"\sjoe\s"
p = re.compile(regex, re.I)
f = open('phone.txt', 'r')
for line in f:
m = p.search(line)
if m:
print m.group()
f.close()
A file is its own line iterator (no need for
readlines). And since you're iterating over
lines, the regex doesn't have to test for it ^ and $.
Yes, that works. Thanks.
Dick Moores
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