Exact match word from text file and print line containing word

Question

Text file:

InheritedFrom: abc@aol.com

InheritedAltFrom:  abc@aol.com

From:  CN=deepak sethi/O=MHI

INetFrom:  xwy.com

code I am using to extract line containing "From:" only

import re

with open('abc.txt', 'r') as file:
         raw = file.readlines()

for line in raw :  
    if  re.search(r'/b' + "From:" + r'/b', line):              
        print (line)

expecting :-

From: CN=deepak sethi/O=MHI

I dont understand what's going wrong?

Answer 1

Regexp's word boundary is presented with \\b , not /b :

with open('abc.txt', 'r') as f:
    for l in f.readlines():
        if re.search(r'\bFrom\b', l):
            print(l)

The output:

From: CN=deepak sethi/O=MHI

Answer 2

import re

with open('abc.txt', 'r') as file:
     raw = file.readlines()

for line in raw :
    if re.search(r'^From:', line):
        print line

Will solve your problem