Python Program to Get the Line Count of a File – 2024

Hey guys, in this blog we will see a Python Program to Get the Line Count of a File.

The content of the file my_file.txt is

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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"))

Output

Here we have just opened the file and used enumerate to count the number of lines in the file and then returned i+1.
We just started a for-loop and we are not performing any function in it.

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

print(num_of_lines)

Output

Here also opened the file and calculated the number of lines.
The first line in the code says that for each found line in the code, add a 1 in our tuple and will create a result like sum(1,1,1) which is equal to 3.