namespace , 45, 124 global , 20 module , 22 package , 50 namespace package , 124 negation , 74 nested scope , 124 new-style class , 125 NEWLINE token , 5, 95 None object , 18, 83 nonlocal statement , 93 not operator , 79 not in $_{operator}$, 79 notation , 4 NotImplemented object , 18 null $_{operation}$, 87 number , 14 complex , 19 floating point , 19 numeric object , 18, 23 numeric literal , 14 NotImplemented , 18 numeric , 18, 23 $_{sequence}$, 19, 23, 71, 72, 79, 85, 96 $_{set}$, 20, 66 set type , 20 slice , 37 string , 71, 72 traceback , 25, 89, 98 tuple , 19, 71, 72, 81 user-defined function , 20, 73, 100 user-defined method , 21 object.__slots__ ( built-in variable ), 32 octal literal , 14 open built-in function , 23 operation $_{binary arithmetic}$, 75 binary bitwise , 76 $_{Boolean}$, 79 null , 87 power , 74 $_{shifting}$, 76 $_{unary arithmetic}$, 74 $_{unary bitwise}$, 74 operator $_{-}$( minus ), 74, 75 $_{%}$( percent ), 75 $_{&}$( ampersand ), 76 $_{*}$( asterisk ), 75 ** , 74 $_{+}$( plus ), 74, 75 $_{/}$( slash ), 75 // , 75 $_{<}$( less ), 76 << , 76 <= , 76 != , 76 == , 76 $_{>}$( greater ), 76 >= , 76 >> , 76 @ ( at ), 75 ^ ( caret ), 76 | ( vertical bar ), 76 ~ ( tilde ), 74 $_{and}$, 79 $_{in}$, 79 $_{is}$, 79 $_{is not}$, 79 $_{not}$, 79 $_{not in}$, 79 $_{or}$, 79 overloading , 26 $_{precedence}$, 81 $_{ternary}$, 80 $_{operators}$, 15 or $_{bitwise}$, 76 object , 17, 125 asynchronous-generator , 70 $_{Boolean}$, 19 built-in function , 22, 73 built-in method , 22, 73 callable , 20, 72 class , 23, 74, 102 class instance , 23, 74 $_{code}$, 24 complex , 19 $_{dictionary}$, 20, 23, 28, 66, 71, 85 Ellipsis , 18 floating point , 19 $_{frame}$, 24 $_{frozenset}$, 20 function , 20, 22, 73, 100 $_{generator}$, 24, 66, 68 immutable , 19, 64, 66 immutable sequence , 19 $_{instance}$, 23, 74 $_{integer}$, 18 $_{list}$, 20, 65, 71, 72, 85 mapping , 20, 23, 71, 85 $_{method}$, 21, 22, 73 module , 22, 71 mutable , 19, 84, 85 mutable sequence , 19 $_{None}$, 18, 83 O Index 160 The Python Language Reference, Release 3.9.5