Index 154 The Python Language Reference, Release 3.9.5 b' bytes literal , 10 b" bytes literal , 10 backslash character , 6 BDFL , 118 binary $_{arithmetic operation}$, 75 $_{bitwise operation}$, 76 $_{binary file}$, 118 binary literal , 14 binding global name , 93 $_{name}$, 45, 84, 90, 91, 100, 102 bitwise $_{and}$, 76 $_{operation}$,$_{binary}$ , 76 $_{operation}$,$_{unary}$ , 74 $_{or}$, 76 $_{xor}$, 76 abs built-in function , 40 abstract base class , 117 aclose() ( agen method ), 70 $_{addition}$, 75 and bitwise , 76 $_{operator}$, 79 annotated assignment , 86 annotation , 117 annotations function , 101 anonymous function , 80 argument , 117 call semantics , 72 function , 20 $_{function definition}$, 101 arithmetic conversion , 63 $_{operation}$,$_{binary}$ , 75 $_{operation}$,$_{unary}$ , 74 array module , 20 as except clause , 97 import statement , 91 $_{keyword}$, 90, 97, 99 with statement , 99 ASCII , 4, 9 asend() ( agen method ), 70 assert statement , 87 AssertionError $_{exception}$, 87 assertions debugging , 87 assignment annotated , 86 attribute , 84 augmented , 86 class attribute , 23 class instance attribute , 23 $_{slicing}$, 85 statement , 19, 84 $_{subscription}$, 85 target list , 84 async $_{keyword}$, 103 B A async def statement , 103 async for $_{in comprehensions}$, 65 statement , 103 async with statement , 104 asynchronous context manager , 118 asynchronous generator , 118 asynchronous iterator , 22 function , 22 asynchronous generator iterator , 118 asynchronous iterable , 118 $_{asynchronous iterator}$, 118 asynchronous-generator object , 70 athrow() ( agen method ), 70 atom , 63 attribute , 18, 118 assignment , 84 assignment , class , 23 assignment ,$_{class instance}$ , 23 class , 23 class instance , 23 $_{deletion}$, 87 generic special , 18 $_{reference}$, 71 special , 18 AttributeError $_{exception}$, 71 augmented assignment , 86 await $_{in comprehensions}$, 65 $_{keyword}$, 74, 103 awaitable , 118 | ( vertical bar ) operator , 76 |= augmented assignment , 86 ~ ( tilde ) operator , 74