Python the next day learning module how to import their own writing module

1, when the module is imported by default in the current directory to find first. For example, the file 1.py has the import File 2 library (its own library), the current file does not have to go to the global environment variables to find, if not found the error.

2, how to write their own module in the call file execution can be executed, the method has the following several:

A. Put the module you wrote in the same directory where you want to execute the file.

b, placed in the 3rd party module default directory (site-packages)

C, modify the Global environment variables (add a path to the module path you write to the global variables)

Python the next day learning module how to import their own writing module