[MERGE] Before actually using encoding need to check that Python has corresponding codec

[Alexander Belchenko]

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Aaron Bentley пишет:
> Aaron Bentley has voted +1 (conditional).
> Status is now: Conditionally approved
> Comment:
> This seems reasonable, but lacks a test case.  It seems to me that it would be easy to write one.  Am I wrong about that?

I don't know is you are right or wrong here.

It seems possible with duck typing.
But testing require some refactoring of existing code,
especially for function get_user_encoding,
because it uses caching.

But anyway, I'll take the challenge and will write the tests.

Alexander
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