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.

The read function returns everything in the file but you can specify the amount of characters. Also From the output you see “\n” this indicates a new line. This is customary notation when reading txt ...

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.