Signed-off-by: Wenqi Li [email protected]

part of #4351

Description

after this PR we can

• simplify look_up_option(mode, InterpolateMode).value -> look_up_option(mode, InterpolateMode)
• simplify type hint Union[NumpyPadMode, PytorchPadMode, str] -> str

Status

Ready

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.