How to import other Python files

Question

How do I import other files in Python?

1. How exactly can I import a specific python file like import file.py?

2. How can I import a folder instead of a specific file?

3. I want to load a Python file dynamically at runtime, based on user input.

4. I want to know how to load just one specific part from the file.

Answer 1

importlib is recent addition in Python to programmatically import a module. 

It just a wrapper around __import__ 

See 

https://docs.python.org/3/library/importlib.html#module-importlib

import importlib moduleName = input('Enter module name:') importlib.import_module(moduleName)