How to make syntax highlighting in tkinter

Fixed

Actually, the __init__.py file is not intended for storing the implementation of package-wide functions. It is recommended to put them in other files.

Here is what is said in :

<...> In the simplest case, __init__.py can just be an empty file, but it can also execute initialization code for the package or set the __all__ variable, described later.

Quote from :

<...> special behavior for the __init__.py file, which is used to gather all package-wide definitions.

<...>

Leaving an __init__.py file empty is considered normal and even a good practice, if the package’s modules and sub-packages do not need