parameters: (self)
return_statement: return len(self.files[self.split])
docstring: __len__
docstring_summary: __len__
docstring_tokens: __len__
function: def __len__(self):
          """__len__"""
          return len(self.files[self.split])
function_tokens: def __len__ ( self ) : return len ( self . files [ self . split ] )