parameters: ()
return_statement: return __sets.keys()
docstring: List all registered imdbs.
docstring_summary: List all registered imdbs.
docstring_tokens: List all registered imdbs .
function: def list_imdbs():
      """List all registered imdbs."""
      return __sets.keys()
function_tokens: def list_imdbs ( ) : return __sets . keys ( )