Python Program to Get Line Count of a File

 

Example 1: Using a for loop

def file_len(fname):

    with open(fname) as f:

        for i, l in enumerate(f):

            pass

    return i + 1

print(file_len("my_file.txt"))

Example 2: Using list comprehension

num_of_lines = sum(1 for l in open('my_file.txt'))

print(num_of_lines)