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from typing import TypeVar
from returns.io import IO
_ValueType = TypeVar('_ValueType')
def unsafe_perform_io(wrapped_in_io: IO[_ValueType]) -> _ValueType:
"""
Compatibility utility and escape mechanism from ``IO`` world.
Just unwraps the internal value
from :class:`returns.io.IO` container.
Should be used with caution!
Since it might be overused by lazy and ignorant developers.
It is recommended to have only one place (module / file)
in your program where you allow unsafe operations.
We recommend to use ``import-linter`` to enforce this rule.
.. code:: python
>>> from returns.io import IO
>>> assert unsafe_perform_io(IO(1)) == 1
See also:
- https://github.com/seddonym/import-linter
"""
return wrapped_in_io._inner_value # noqa: SLF001
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