(self)
return KeysView(self)
od.viewkeys() -> a set-like object providing a view on od's keys
od.viewkeys() -> a set-like object providing a view on od's keys
od . viewkeys () - > a set - like object providing a view on od s keys
def viewkeys(self):
        "od.viewkeys() -> a set-like object providing a view on od's keys"
        return KeysView(self)
def viewkeys ( self ) : return KeysView ( self )