Replace Literal
and Protocol
with runtime-referable symbols.
#651
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This is an improvement for static typing.
When supporting versions earlier than Python 3.8, we used tricks combining
hints.pyi
and type-hinting by string literals to utilizeLiteral
andProtocol
.Since version 1.4.7, support for versions earlier than Python 3.8 has been dropped, so
Literal
andProtocol
can now be used directly fromtyping
.Dead version bridges in
hints.pyi
have also been removed.