Index 163 The Python Language Reference, Release 3.9.5 trace stack , 25 traceback object , 25, 89, 98 trailing comma , 81 triple-quoted string , 127 triple-quoted string , 10 $_{True}$, 19 try statement , 25, 97 tuple empty , 19, 64 object , 19, 71, 72, 81 singleton , 19 type , 18, 127 built-in function , 17, 34 data , 18 hierarchy , 18 immutable data , 64 type alias , 127 $_{type hint}$, 128 type of an object , 17 TypeError $_{exception}$, 74 types, internal , 24 u' string literal , 9 u" string literal , 9 unary $_{arithmetic operation}$, 74 $_{bitwise operation}$, 74 unbinding $_{name}$, 87 UnboundLocalError , 46 $_{Unicode}$, 19 $_{Unicode Consortium}$, 10 universal newlines , 128 UNIX , 105 unpacking $_{dictionary}$, 66 in function calls , 73 $_{iterable}$, 81 unreachable object , 17 unrecognized escape sequence , 11 user-defined function , 20 function call , 73 $_{method}$, 21 user-defined function object , 20, 73, 100 user-defined method object , 21 $_{tab}$, 7 target , 84 $_{deletion}$, 87 $_{list}$, 84, 96 list assignment , 84 $_{list}$,$_{deletion}$ , 87 loop control , 90 tb_frame ( traceback attribute ), 25 tb_lasti ( traceback attribute ), 25 tb_lineno ( traceback attribute ), 25 tb_next ( traceback attribute ), 25 termination model , 47 ternary $_{operator}$, 80 test $_{identity}$, 79 $_{membership}$, 79 text encoding , 127 text file , 127 throw() ( coroutine method ), 43 throw() ( generator method ), 68 $_{token}$, 5 StopAsyncIteration exception , 70 StopIteration $_{exception}$, 68, 88 string __format__() ( object method ), 27 __str__() ( object method ), 27 conversion , 27, 83 formatted literal , 12 immutable sequences , 19 interpolated literal , 12 $_{item}$, 71 object , 71, 72 string literal , 9 subclassing immutable types , 26 $_{subscription}$, 19, 20, 71 assignment , 85 subtraction , 75 suite , 95 syntax , 4 sys module , 98, 105 sys.exc_info , 25 sys.last_traceback , 25 sys.meta_path , 52 sys.modules , 51 sys.path , 58 sys.path_hooks , 58 sys.path_importer_cache , 58 sys.stderr , 23 sys.stdin , 23 sys.stdout , 23 $_{SystemExit}$( built-in exception ), 47 U T