..function::reload_environ()

Update:data:`os.environ` and:data:`os.environb` with changes to the

environment made by:func:`os.putenv`, by:func:`os.unsetenv`, or made

outside Python in the same process.

current process environment made by:func:`os.putenv`, by

:func:`os.unsetenv`, or made outside Python in the same process.

This function is not thread safe. Calling it while the environment is

modified in other thread has undefined behavior. Reading from

:data:`os.environ` or calling:func:`os.getenv` during reloading can return

empty result.

..versionadded::3.14