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Patch #1181: add os.environ.clear() method.

This commit is contained in:
Georg Brandl 2007-09-20 17:57:59 +00:00
parent e2176020f9
commit 4a21268a74
2 changed files with 14 additions and 2 deletions
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6
Doc/library/os.rst
View File

@ -117,7 +117,11 @@ process and user.
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 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) .. function:: chdir(path)

8
Lib/os.py
View File

@ -446,6 +446,10 @@ else:
def __delitem__(self, key): def __delitem__(self, key):
unsetenv(key) unsetenv(key)
del self.data[key.upper()] 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): def has_key(self, key):
return key.upper() in self.data return key.upper() in self.data
def __contains__(self, key): def __contains__(self, key):
@ -503,6 +507,10 @@ else:
def __delitem__(self, key): def __delitem__(self, key):
unsetenv(key) unsetenv(key)
del self.data[key] del self.data[key]
def clear(self):
for key in self.data.keys():
unsetenv(key)
del self.data[key]
def copy(self): def copy(self):
return dict(self) return dict(self)