The problem I've noticed is that if I append the file with each of the 100k runs (one at a time), it can happen that two threads try to save to the file at the same time and some row (s) end up empty.

This post explains how to write to a file in Python. You'll discover how to create word files (.docx), spreadsheets (.csv), text files, and more!

Finally, you can write a program to extract zip files to disk in just a few lines. The following Python program extracts all zip files given as arguments to the current directory.

file_lines = [x.rstrip(‘n’) for x in my_file] Syntactical white space might cause noses to wrinkle, and some programmers do reject Python for this reason.