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 will show you how to open CSV files in Python using the CSV module. You'll also learn another method + how to write CSV files!

A file with the PYM file extension is a Python Macro script file. The PYM file contains one or more Python scripts. Each Python script starts with the string "#begin python" and ends with the ...

Here are some free Python file viewer and Python file editor software to help you open PY files on Windows 11/10 PC.

The newly approved Python Enhancement Proposal 751 gives Python a standard lock file format for specifying the dependencies of projects. Here’s the what, why, and when.