CODEWITHSUNDEEP
python
user1575730
user1575730

Reputation: 105

How to search a string case insensitive and (R) using regular expression in a text file using Python

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.

Upvotes: 0

Views: 1219

Answers (2)

Robbie Rosati
Robbie Rosati

Reputation: 1205

Without a regex:

with open('C:/path/to/file.txt','r') as f:
    for line in f:
        if 'micro(r) windows explorer' in line.lower():
            print(line)

Upvotes: 1

Tim Pietzcker
Tim Pietzcker

Reputation: 336208

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

Upvotes: 1

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