151 INDEX Non-alphabetical ... , 117 ellipsis literal , 18 ''' string literal , 10 {} ( curly brackets ) $_{dictionary expression}$, 66 in formatted string literal $_{set expression}$, 66 $_{.}$( dot ) attribute reference , 71 in numeric literal , 14 $_{!}$( exclamation ) in formatted string literal $_{-}$( minus ) $_{binary operator}$, 75 unary operator , 74 $_{'}$( single quote ) string literal , 9 $_{"}$( double quote ) string literal , 9 """ string literal , 10 $_{#}$( hash ) comment , 5 source encoding declaration $_{%}$( percent ) $_{operator}$, 75 %= augmented assignment , 86 $_{&}$( ampersand ) $_{operator}$, 76 &= augmented assignment , 86 () ( parentheses ) call , 72 $_{class definition}$, 102 $_{function definition}$, 100 $_{generator expression}$, 66 in assignment target list , 84 tuple display , 64 $_{*}$( asterisk ) $_{function definition}$, 101 import statement , 91 in assignment target list , 84 $_{in expression lists}$, 81 in function calls , 73 $_{operator}$, 75 ** function definition , 101 $_{in dictionary displays}$, 66 in function calls , 73 $_{operator}$, 74 **= augmented assignment , 86 *= augmented assignment , 86 $_{+}$( plus ) $_{binary operator}$, 75 unary operator , 74 += augmented assignment , 86 $_{,}$( comma ), 64 argument list , 72 $_{expression list}$, 65, 66, 81, 87, 102 $_{identifier list}$, 93 import statement , 90 $_{in dictionary displays}$, 66 in target list , 84 parameter list , 100 $_{slicing}$, 72 with statement , 99 $_{/}$( slash ) $_{function definition}$, 101 $_{operator}$, 75 // $_{operator}$, 75 //= augmented assignment , 86 /= augmented assignment , 86 0b integer literal , 14 0o integer literal , 14 0x integer literal , 14 2to3 , 117 $_{:}$( colon ) annotated variable , 86 compound statement , 96, 97, 99, 100, 102 function annotations , 101