PrefaceI am writing this article because I recently noticed in the Python community that there are several frequently asked questions:Why does running the command after installing pip result in a "executable not found" error?Why does importing a module result in a "ModuleNotFound" error?Why can I run my code in PyCharm, but it doesn't work in the command prompt?Rather than just providing solutions, it is better to teach people how to fish. To address these types of issues, you need to understand how Python locates packages. I hope that after reading this article, you will find it helpful.How P...