parameters: (self)
docstring: Unlock the mailbox if it is locked.
docstring_summary: Unlock the mailbox if it is locked.
docstring_tokens: Unlock the mailbox if it is locked .
function: def unlock(self):
          """Unlock the mailbox if it is locked."""
          if self._locked:
              _unlock_file(self._file)
              self._locked = False
function_tokens: def unlock ( self ) : if self . _locked : _unlock_file ( self . _file ) self . _locked = False