列出确定正值/负值以及它们是否大于/小于

Question

好的，我得到了下面的问题：给定一个整数列表，L，编写代码来确定列表中正整数的和是否 大于列表中负数之和的（绝对值）并打印适当的 留言。在

这是我为代码设计的，但它不起作用，它只是返回括号内的输入数字，例如input=-1，-2,4,5 output=（-1，-2,4,5）

def question(L):
   L = input()
   sumPositive = () #List where I will send the positive integers from "L" list
   sumNegative = () #List where I will send the negative integers from "L" list

   if x in L >= 0:
      append.x(sumPositive) #checks if the number is equal to or greater than 0, if so add it to          "sumPositive" list
  elif:
      append.x(sumNegative) #if not add it to "sumNegative" list

if sum(sumPositive) > abs(sum(sumNegative)):
   print "The sum of positive numbers is greater than the absolute value of negative numbers."
   elif: 
      sum(Positive) < abs(sum(sumNegative)):
         print "The sum of absolute value of negative numbers is greater than the sum of positive         numbers."
   else:
   print "They are equal."

有谁能告诉我我哪里出错了吗？或者我是不是做错了什么。谢谢！在

Answer 1

()创建空元组，而不是列表。append()是一种列表方法，例如foo.append(bar)。在

Answer 2

>>> def question(x):
...    s1=sum([i for i in x if i>0])
...    s2=sum([abs(i) for i in x if i<0])
...    if s1>s2:
...       print "The sum of positive numbers is greater than the absolute value of negative numbers."
...    elif s1<s2:
...       print "The sum of absolute value of negative numbers is greater than the sum of positive numbers."
...    else:
...       print "They are equal."
... 
>>> lst = [1,2,3,-1,-5,-7,3,-4,5,-6]
>>> question(lst)
The sum of absolute value of negative numbers is greater than the sum of positive numbers.
>>> lst=[-1,-2,3,2,3]
>>> question(lst)
The sum of positive numbers is greater than the absolute value of negative numbers.
>>> lst=[-2,-3,-3,3,2,3]
>>> question(lst)
They are equal.

Answer 3

更像Python的解决方案：

def question(lst):
    sum_pos = sum(x for x in lst if x >0)
    sum_neg = sum(abs(x) for x in lst if x<0)

    if sum_pos > sum_neg:
        print "The sum of positive numbers is greater than the absolute value of negative numbers."
    elif sum_pos < sum_neg:
        print "The sum of absolute value of negative numbers is greater than the sum of positive numbers."
    else:
        print "They are equal."

question([1,-1,-2,-2])