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secrets.py
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71 lines (55 loc) · 2.25 KB
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# !/usr/bin/env python
#
# secrets.py
"""
Functions for working with secrets, such as API tokens.
.. versionadded:: 0.4.6
"""
#
# Copyright © 2020 Dominic Davis-Foster <dominic@davis-foster.co.uk>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
#
# this package
from domdf_python_tools.doctools import prettify_docstrings
__all__ = ["Secret"]
@prettify_docstrings
class Secret(str):
"""
Subclass of :py:class:`str` that guards against accidentally printing a secret to the terminal.
The actual value of the secret is accessed via the ``.value`` attribute.
The protection should be maintained even when the secret is in a list, tuple, set or dict,
but you should still refrain from printing objects containing the secret.
The secret overrides the :meth:`~.__eq__` method of :class:`str`, so:
.. code-block:: python
>>> Secret("Barry as FLUFL") == "Barry as FLUFL"
True
.. versionadded:: 0.4.6
.. autosummary-widths:: 1/2
"""
__slots__ = ("value", )
value: str #: The actual value of the secret.
def __new__(cls, value) -> "Secret": # noqa: D102
obj: Secret = super().__new__(cls, "<SECRET>")
obj.value = str(value)
return obj
def __eq__(self, other) -> bool:
return self.value == other
def __hash__(self):
return hash(self.value)