jpayne@7: from __future__ import annotations
jpayne@7: 
jpayne@7: import typing
jpayne@7: from types import TracebackType
jpayne@7: 
jpayne@7: 
jpayne@7: def to_bytes(
jpayne@7:     x: str | bytes, encoding: str | None = None, errors: str | None = None
jpayne@7: ) -> bytes:
jpayne@7:     if isinstance(x, bytes):
jpayne@7:         return x
jpayne@7:     elif not isinstance(x, str):
jpayne@7:         raise TypeError(f"not expecting type {type(x).__name__}")
jpayne@7:     if encoding or errors:
jpayne@7:         return x.encode(encoding or "utf-8", errors=errors or "strict")
jpayne@7:     return x.encode()
jpayne@7: 
jpayne@7: 
jpayne@7: def to_str(
jpayne@7:     x: str | bytes, encoding: str | None = None, errors: str | None = None
jpayne@7: ) -> str:
jpayne@7:     if isinstance(x, str):
jpayne@7:         return x
jpayne@7:     elif not isinstance(x, bytes):
jpayne@7:         raise TypeError(f"not expecting type {type(x).__name__}")
jpayne@7:     if encoding or errors:
jpayne@7:         return x.decode(encoding or "utf-8", errors=errors or "strict")
jpayne@7:     return x.decode()
jpayne@7: 
jpayne@7: 
jpayne@7: def reraise(
jpayne@7:     tp: type[BaseException] | None,
jpayne@7:     value: BaseException,
jpayne@7:     tb: TracebackType | None = None,
jpayne@7: ) -> typing.NoReturn:
jpayne@7:     try:
jpayne@7:         if value.__traceback__ is not tb:
jpayne@7:             raise value.with_traceback(tb)
jpayne@7:         raise value
jpayne@7:     finally:
jpayne@7:         value = None  # type: ignore[assignment]
jpayne@7:         tb = None