How to use UTF-8 encoding in Python source?

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You can use UTF-8 encoding in Python source in the following way:

1. Start your Python source file with the following line of code:

   # -*- coding: utf-8 -*-
   

   This line tells the Python interpreter that the source code is encoded in UTF-8.

2. Use UTF-8 encoded strings in your source code. For example:

   print("Hello, 世界!")
   

   This code will print "Hello, 世界!", where the characters "世界" are encoded in UTF-8.

Note: If you're working with non-ASCII characters in your source code, it's important to use an encoding that supports those characters. UTF-8 is a good choice because it's widely supported and can handle all Unicode characters.