The “w+” tells Python that we are writing to a new file. If the file already exists, then that file is overwritten. If the file doesn’t already exist, then it will be created.

This post will show you how to open Python PY files in Windows 11/10. PY is a script file written in Python programming language. In this post, we have covered some free tools to open Python ...

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.