parameters: (self, sub=True, attr=True, text=True)
return_statement: return [ti for ti, s in self.items(sub, attr, text)]
docstring: Get a recursively-generated list of tree-indexes.
  
          If sub == False, do not show sub-elements.
          If attr == False, do not show attributes.
          If text == False, do not show text/Unicode sub-elements.
docstring_summary: Get a recursively-generated list of tree-indexes.
docstring_tokens: Get a recursively - generated list of tree - indexes .
function: def keys(self, sub=True, attr=True, text=True):
          """Get a recursively-generated list of tree-indexes.
  
          If sub == False, do not show sub-elements.
          If attr == False, do not show attributes.
          If text == False, do not show text/Unicode sub-elements.
          """
          return [ti for ti, s in self.items(sub, attr, text)]
function_tokens: def keys ( self , sub = True , attr = True , text = True ) : return [ ti for ti , s in self . items ( sub , attr , text ) ]