The Python Language Reference, Release 3.9.5 159 Index key function , 123 key/datum pair , 66 $_{keyword}$, 9 $_{as}$, 90, 97, 99 async , 103 await , 74, 103 elif , 96 else , 90, 9698 except , 97 finally , 88, 90, 97, 98 from , 67, 90 $_{in}$, 96 yield , 67 keyword argument , 123 mapping , 123 object , 20, 23, 71, 85 matrix multiplication , 75 membership test , 79 meta hooks , 52 meta hooks , 52 $_{meta path finder}$, 124 metaclass , 34, 124 metaclass hint , 34 $_{method}$, 124 built-in , 22 call , 73 magic , 123 object , 21, 22, 73 special , 127 user-defined , 21 $_{method resolution order}$, 124 minus , 74 module , 124 __main__ , 46, 105 $_{array}$, 20 $_{builtins}$, 105 dbm.gnu , 20 dbm.ndbm , 20 $_{extension}$, 18 $_{importing}$, 90 $_{io}$, 23 namespace , 22 object , 22, 71 $_{sys}$, 98, 105 module spec , 51, 124 modulo , 75 MRO , 124 multiplication , 75 mutable , 124 object , 19, 84, 85 mutable object , 17 mutable sequence loop over , 97 object , 19 $_{name}$, 8, 45, 64 $_{binding}$, 45, 84, 90, 91, 100, 102 $_{binding}$,$_{global}$ , 93 class , 102 function , 100 mangling , 64 $_{rebinding}$, 84 $_{unbinding}$, 87 named tuple , 124 NameError $_{exception}$, 64 NameError ( built-in exception ), 46 names private , 64 magic $_{method}$, 123 $_{magic method}$, 123 makefile() ( socket method ), 23 mangling $_{name}$, 64 lambda , 123 $_{expression}$, 80, 101 form , 80 language $_{C}$, 18, 19, 22, 76 Java , 19 last_traceback ( in module sys ), 25 LBYL , 123 leading whitespace , 7 len built-in function , 19, 20, 37 lexical analysis , 5 lexical definitions , 4 line continuation , 6 $_{line joining}$, 5, 6 line structure , 5 $_{list}$, 123 assignment ,$_{target}$, 84 $_{comprehensions}$, 65 deletion target , 87 $_{display}$, 65 empty , 65 $_{expression}$, 81, 83 object , 20, 65, 71, 72, 85 target , 84, 96 $_{list comprehension}$, 123 literal , 9, 64 $_{loader}$, 51, 123 logical line , 5 loop over mutable sequence , 97 statement , 90, 96 loop control target , 90 L M N