如何添加python列表的所有元素

Question

所以基本上我有一个用户输入的列表，我检查所有元素是否为正我输出所有正数，如果它们都是负数，我输出所有负数，但如果它们都是正数和负数，我需要对它们求和全部完成，我不知道如何做这最后一步，这是我的代码，直到现在

stop = "0"
Numbers = []
number = ""
while number != stop:
    number  = input("enter a number ")
    Numbers.append(number)
    print(Numbers)
if all(int(element) >= 0 for element in Numbers):
    print("allpos")
if all(int(element) <= 0 for element in Numbers):
    print("all neg")

Answer 1

使用sum。

print(sum(numbers))

另外，变量名使用小写字符。

stop="0"
number =""
numbers=[]
while number != stop:
    number = input("enter a number ")
    numbers.append(int(number))
print(numbers)
if all(element > 0 for element in numbers):
    print("allpos")
elif all(element < 0 for element in numbers):
    print("all neg")
else:
    print(sum(numbers))

或更清晰的方法：

numbers = [int(x) for x in input("enter list of numbers, separated by space: ").split()]
print(numbers)
if all(element > 0 for element in numbers):
    print("allpos")
elif all(element < 0 for element in numbers):
    print("all neg")
else:
    print(sum(numbers))

Answer 2

参考这个：

list_ = [1, 2, -3]

if all(int(element) >= 0 for element in list_):
    print("allpos")

elif all(int(element) <= 0 for element in list_):
    print("all neg")

else: 
    print('sum', sum(list_))