Question

我目前的代码如下：

num = input()
numlist = num.split(",")

def even(list):
    string = ""
    for number in list :
        number = float(number)
        if number %2 == 0:
             string += "~"+str(number)
    return(string)
def odd(list):
    string = ""
    for number in list:
        number = float(number)
        if number %2 != 0:
           string += "~"+str(number)
    return(string)

print "even numbers :" ,even(numlist)
print "odd numbers :" ,odd(numlist)

我的输出：偶数：~56.0 奇数：~3.0~1.0~5.9~12.6~8.9

预期产量：偶数：~56 奇数：~3~1~5.9~12.6~8.9 谢谢你的帮助

Answer 1

因为你获得了字符串，所以在你的方法中使用split '.'，即：

 if string.split('.')[-1] == '0':
       string = string.split('.')[0]

完整计划：

num = input()
numlist = num.split(",")

def even(list):
    string = ""
    for number in list :
        number = float(number)
        if number %2 == 0:
             string += "~"+str(number)
        if string.split('.')[-1] == '0':
            string = string.split('.')[0]
    return(string)

def odd(list):
    string = ""
    for number in list:
        number = float(number)
        if number %2 != 0:
            string += "~"+str(number)
        if string.split('.')[-1] == '0':
            string = string.split('.')[0]
    return(string)

print ("even numbers :" ,even(numlist))
print ("odd numbers :" ,odd(numlist))

示例输出：

5,5.6
even numbers : 
odd numbers : ~5~5.6

注意：不应在浮点数上使用模数。这里它只考虑整数部分而不是小数。

Answer 2

执行此操作的简单方法是将原始字符串从numlist附加到输出字符串。

我还更改了函数参数的名称：不应将list用作变量名，因为它会影响内置list类型。

def even(lst):
    string = ""
    for s in lst :
        number = float(s)
        if number %2 == 0:
             string += "~" + s
    return string

def odd(lst):
    string = ""
    for s in lst:
        number = float(s)
        if number %2 != 0:
           string += "~" + s
    return string

# Test

data = '3,1,56,5.9,12.6,8.9'
numlist = data.split(',')
print numlist
print "even numbers :" ,even(numlist)
print "odd numbers :" ,odd(numlist)

<强>输出

['3', '1', '56', '5.9', '12.6', '8.9']
even numbers : ~56
odd numbers : ~3~1~5.9~12.6~8.9

Answer 3

您可以使用浮点数的is_integer（）方法检查浮点数是否为整数。如果它是一个整数，你将它转换为int，否则你就像它一样。所以你可以这样做：

num = input()
numlist = num.split(",")

def even(list):
    string = ""
    for number in list :
        number = float(number)
        if number.is_integer():
            number = int(number)
        if number %2 == 0:
            string += "~"+str(number)
    return(string)

def odd(list):
    string = ""
    for number in list:
        number = float(number)
        if number.is_integer():
            number = int(number)
        if number %2 != 0:
           string += "~"+str(number)
    return(string)

print "even numbers :" ,even(numlist)
print "odd numbers :" ,odd(numlist)

输入：56,3,5.9,12.6,8.9

输出：偶数：~56
奇数：~3~5.9~12.6~8.9

无论如何，我同意其他人的说法，将模数与非整数一起使用真的很奇怪。

整数保持整数但带小数的数字在输出答案中仍然是小数？

3 个答案: