how to write utf-8 in python code example

Example 1: python open encoding utf-8

from io import open
f = open("test", mode="r", encoding="utf-8")

Example 2: python utf8

# insert in the first line of the file

#!/usr/bin/python3
# -*- coding: utf-8 -*-

# or

#!/usr/bin/env python
# -*- coding: utf-8 -*-