parameters: (self)
return_statement: return len(self._mapping)
docstring: Return the current size of the cache.
docstring_summary: Return the current size of the cache.
docstring_tokens: Return the current size of the cache .
function: def __len__(self):
          """Return the current size of the cache."""
          return len(self._mapping)
function_tokens: def __len__ ( self ) : return len ( self . _mapping )