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Python source code encoding is specified in the first or second line of the script using the following syntax:
# -*- coding: <encoding-name> -*-
The encoding-name can be any valid encoding supported by Python.
Early Python versions required the specific term coding in the comment, as seen in the original syntax:
# -*- coding: <encoding-name> -*-
However, later versions of Python allow for more flexibility in the comment prefix. According to the Python documentation, any of the following prefixes are acceptable:
Therefore, both of the following are valid ways to declare the source code encoding:
# -*- coding: utf-8 -*- # -*- encoding: utf-8 -*-
It's important to choose a consistent style and stick to it within your project to avoid confusion. When specifying the encoding, it's recommended to use the recommended forms:
# -*- coding: <encoding-name> -*- # vim: fileencoding=
These forms are recognized by various editing software and ensure compatibility with the Python interpreter.
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