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- from __future__ import annotations
- from base64 import b64decode, b64encode
- from typing import Any
- def removeprefix(s: str, prefix: str) -> str:
- """Removes a prefix from a string.
- This roughly backports the built-in `str.removeprefix` function from Python 3.9+.
- Once Python 3.8 support is dropped, just replace this with `str.removeprefix`.
- """
- return s[len(prefix) :] if s.startswith(prefix) else s
- def removesuffix(s: str, suffix: str) -> str:
- """Removes a suffix from a string.
- This roughly backports the built-in `str.removesuffix` function from Python 3.9+.
- Once Python 3.8 support is dropped, just replace this with `str.removesuffix`.
- """
- return s[: -len(suffix)] if s.endswith(suffix) else s
- def ensureprefix(s: str, prefix: str) -> str:
- """Ensures the string has the given prefix prepended."""
- return s if s.startswith(prefix) else f"{prefix}{s}"
- def ensuresuffix(s: str, suffix: str) -> str:
- """Ensures the string has the given suffix appended."""
- return s if s.endswith(suffix) else f"{s}{suffix}"
- def nameof(obj: Any, full: bool = True) -> str:
- """Internal convenience helper that returns the object's `__name__` or `__qualname__`.
- If `full` is True, attempt to return the object's `__qualname__` attribute,
- falling back on the `__name__` attribute.
- """
- return getattr(obj, "__qualname__", obj.__name__) if full else obj.__name__
- def b64decode_ascii(s: str) -> str:
- """Returns the decoded base64 string interpreted as ASCII.
- Convenience function for directly converting `str -> str`.
- """
- return b64decode(s).decode("ascii")
- def b64encode_ascii(s: str) -> str:
- """Returns the base64 encoding of the string's ASCII bytes.
- Convenience function for directly converting `str -> str`.
- """
- return b64encode(s.encode("ascii")).decode("ascii")
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