PYTHON

file searching in python

with open('largeFile', 'r') as inF:
    for line in inF:
        if 'myString' in line:
            # do_something

searching through a file in python

# Open the file
fhand = open('path and the name of the file')
count = 0
# iterate through the lines in the file
for line in fhand:
    # Remove the 
 at the end and stop printing an empty line
    line = line.rstrip()
    if 'sub string' in line:
        count += 1
        print(count, line)
# Close the file
fhand.close()

python : search file for string

import mmap

with open('example.txt') as f:
    s = mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)
    if s.find('blabla') != -1:
        print('true')