Question

I have string called “Micro(R) Windows explorer” in a text file How to search Case insensitive and (R) also match using Regular expression
code is

with open(logfile) as inf:
            for line in inf:
                if re.search(string,line,re.IGNORECASE):
                    print 'found line',line

but this string “Micro(R) Windows explorer” is not accepting giving error.

Answer 1

For a case-insensitive search, start your regex with (?i) or compile it with the re.I option.

To match (R), use the regex \(R\). Otherwise, the parentheses will be interpreted as regex metacharacters (meaning a capturing group), and only the string "MicroR Windows Explorer" would be matched by it.

Together:

with open(logfile) as inf:
    regex = re.compile(r"Micro\(R\) Windows Explorer", re.I)
    for line in inf:
        if regex.search(line):
             print 'found line',line