152 Index $_{in dictionary expressions}$, 66 in formatted string literal , 12 lambda expression , 80 $_{slicing}$, 72 ; ( semicolon ), 95 < ( less ) operator , 76 << $_{operator}$, 76 <<= augmented assignment , 86 <= $_{operator}$, 76 != operator , 76 -= augmented assignment , 86 = ( equals ) assignment statement , 84 class definition , 34 for help in debugging using string literals , 12 $_{function definition}$, 101 in function calls , 72 == $_{operator}$, 76 -> function annotations , 101 $_{>}$( greater ) $_{operator}$, 76 >= $_{operator}$, 76 >> $_{operator}$, 76 >>= augmented assignment , 86 >>> , 117 @ ( at ) $_{class definition}$, 102 $_{function definition}$, 100 $_{operator}$, 75 $_{[]}$( square brackets ) in assignment target list , 84 $_{list expression}$, 65 $_{subscription}$, 71 $_{\}$( backslash ) escape sequence , 10 \\ escape sequence , 10 \a escape sequence , 10 \b escape sequence , 10 \f escape sequence , 10 \N escape sequence , 10 escape sequence , 10 \r escape sequence , 10 escape sequence , 10 \U escape sequence , 10 \u escape sequence , 10 \v escape sequence , 10 \x escape sequence , 10 ^ ( caret ) operator , 76 ^= augmented assignment , 86 _ ( underscore ) in numeric literal , 14 _, identifiers , 9 __, identifiers , 9 __abs__() ( object method ), 40 __add__() ( object method ), 39 __aenter__() ( object method ), 44 __aexit__() ( object method ), 44 __aiter__() ( object method ), 43 __all__ ( optional module attribute ), 91 __and__() ( object method ), 39 __anext__() ( agen method ), 70 __anext__() ( object method ), 43 __annotations__ ( class attribute ), 23 __annotations__ ( function attribute ), 20 __annotations__ ( module attribute ), 22 __await__() ( object method ), 42 __bases__ ( class attribute ), 23 __bool__() ( object method ), 29, 37 __bytes__() ( object method ), 27 __cached__ , 56 __call__() ( object method ), 37, 74 __cause__ ( exception attribute ), 89 __ceil__() ( object method ), 40 __class__ ( instance attribute ), 23 __class__ ( method cell ), 35 __class__ ( module attribute ), 30 __class_getitem__() ( object class method ), 36 __classcell__ ( class namespace entry ), 35 __closure__ ( function attribute ), 20 __code__ ( function attribute ), 20 __complex__() ( object method ), 40 __contains__() ( object method ), 38 __context__ ( exception attribute ), 89 __debug__ , 87 __defaults__ ( function attribute ), 20 __del__() ( object method ), 26 __delattr__() ( object method ), 30 __delete__() ( object method ), 31 __delitem__() ( object method ), 38 __dict__ ( class attribute ), 23 The Python Language Reference, Release 3.9.5