是否有数学函数可以加、减、乘、幂或，并且可以对传递给函数的多个元素起作用？

Question

该函数应采用多个参数并对它们进行某些数学运算（+、-、*、**、|、&）。 + 是默认运算符。数学函数连接到字典。以下是我到目前为止所做的。但我对数学运算有疑问（不要使用多个参数）。谁能帮忙？例子 args: 1, 3, 5, operation='-' --> result: 1 - 3 - 5 = -7

def multi_calculator(*args: int, operation='+'):
    import operator
    ops = {
        '+': sum,
        '-': operator.sub,
        '*': operator.mul,
        '**': operator.pow,
        '|': operator.or_,
        '&': operator.and_,
    }

    if operation not in ops:
        result = 'Unknown operator'
    elif len(args) == 0:
        result = 0
    elif len(args) == 1:
        result = args[0]
    else:
        result = ops[operation](args)
    return result


print(multi_calculator(1, 2, 3, operation='-'))

Answer 1

您可以使用 functools.reduce:

import operator
import functools

def multi_calculator(*args: int, operation='+'):
    
    ops = {
        '+': operator.add,
        '-': operator.sub,
        '*': operator.mul,
        '**': operator.pow,
        '|': operator.or_,
        '&': operator.and_,
    }

    if operation not in ops:
        result = 'Unknown operator'
    elif len(args) == 0:
        result = 0
    elif len(args) == 1:
        result = args[0]
    else:
        result = functools.reduce(ops[operation], args)
    return result


print(multi_calculator(1, 2, 3, operation='-'))

是否有数学函数可以加、减、乘、幂或，并且可以对传递给函数的多个元素起作用？

Are there mathematical functions to add, substract, multiply, power, or, and that works on multiple elements passed to fuction?

python

dictionary

calculator

operation