run python file using python code code example

Example 1: run python file using python code

exec(open('file.py').read())

Example 2: how to execute a python file from another python file

import  myfile

myfile.myfunction


#calls a specific function from within the file

Example 3: how to run python program

move to the directory where your program lies 
open cmd 
python first_script.py(your file name)