Split File Python

split-file.py

import os
import sys

# split a file into multiple files 1200 lines each
def split_file(input_file, lines_per_file=1200):
    if not os.path.isfile(input_file):
        print(f"Error: The file {input_file} does not exist.")
        return

    with open(input_file, 'r') as file:
        lines = file.readlines()

    total_lines = len(lines)
    num_files = (total_lines + lines_per_file - 1) // lines_per_file  # Ceiling division

    for i in range(num_files):
        output_file = f"{input_file}_part{i + 1}.txt"
        with open(output_file, 'w') as out_file:
            start_index = i * lines_per_file
            end_index = min(start_index + lines_per_file, total_lines)
            out_file.writelines(lines[start_index:end_index])
        print(f"Created: {output_file}")