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.

Once the Python file is saved in Notepad, the programmer can run the Python program using the command line and interpreter. To do this, the programmer opens a DOS command line window, accessible ...

When Python for Windows is installed, it will associate the .pyzw file extension with the Python executable, causing Python to execute the scripts automatically when the file is double-clicked.