how to run a python file from python code example

Example 1: run python file using python code

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

Example 2: how to run a python script

# Save the script in a file with .py extension
# run the script using the below command
python fileName.py

Example 3: run python.py file

# save a file in text editor with .py
# open terminal, and change directories
# run the following command:
python3 file.py

Example 4: how to run python program

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

Example 5: how to run a code in python

>>> print('Hello World!')

>>> 2 + 5
7
>>> print('Welcome to Real Python!')
Welcome to Real Python!

Example 6: how to execute a python script

C:\Python27\python.exe C:\Users\Username\Desktop\my_python_script.py