passed to the appropriate process-creation functions to cause child processes
to use a modified environment.
- If the platform supports the :func:`unsetenv` function, you can delete items in
+ If the platform supports the :func:`unsetenv` function, you can delete items in
this mapping to unset environment variables. :func:`unsetenv` will be called
- automatically when an item is deleted from ``os.environ``.
+ automatically when an item is deleted from ``os.environ``, and when
+ :meth:`os.environ.clear` is called.
+
+ .. versionchanged:: 2.6
+ Also unset environment variables when calling :meth:`os.environ.clear`.
.. function:: chdir(path)
def __delitem__(self, key):
unsetenv(key)
del self.data[key.upper()]
+ def clear(self):
+ for key in self.data.keys():
+ unsetenv(key)
+ del self.data[key]
def has_key(self, key):
return key.upper() in self.data
def __contains__(self, key):
def __delitem__(self, key):
unsetenv(key)
del self.data[key]
+ def clear(self):
+ for key in self.data.keys():
+ unsetenv(key)
+ del self.data[key]
def copy(self):
return dict(self)