ansible/docs/docsite/rst/dev_guide/testing/sanity/no-unicode-literals.rst

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Sanity Tests » no-unicode_literals
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The use of :code:`from __future__ import unicode_literals` has been deemed an anti-pattern. The
problems with it are:
* It makes it so one can't jump into the middle of a file and know whether a bare literal string is
a byte string or text string. The programmer has to first check the top of the file to see if the
import is there.
* It removes the ability to define native strings (a string which should be a byte string on python2
and a text string on python3) via a string literal.
* It makes for more context switching. A programmer could be reading one file which has
`unicode_literals` and know that bare string literals are text strings but then switch to another
file (perhaps tracing program execution into a third party library) and have to switch their
understanding of what bare string literals are.