For example, if you want to write a .Doc file in Python, you’ll come unstuck! Open a Word document in a text editor and you’ll see that Microsoft uses a lot of confusing formatting and ...

A CSV file is a “comma-separated values” file. In plain English, this is a text ... then write it out in plain English. Or, what if we want to pull out a specific row? my_file = open ...

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.