python语言的幂运算符_5.4 幂运算符 The power operator 5.5 一元算术运算符 Unary arithmetic operations - Python 语言参考手册 - .
5.4幂运算符ThepoweroperatorThepoweroperatorbindsmoretightlythanunaryoperatorsonitsleft;itbindslesstightlythanunaryoperatorsonitsright.Thesyntaxis:幂运算符比在操作数左边的一元运算符有更高的优先级;但比右面的一元运算符要低.句法为:Thus,inanunparen