如何检查列表中的所有元素是否都是整数 [英] How to check if all elements in a list are whole numbers

问题描述

如果我有一个列表，例如:

If I have a list such as :

List = [12,6,3,5,1.2,5.5] 

有没有一种方法可以检查所有数字是否都是整数?我尝试过类似的

Is there a way I can check if all the numbers are whole numbers? I tried something like

def isWhole(d): 
if (d%1 == 0 ) : for z in List return true.

这显然是错误的.我该怎么办?

That is obviously terribly wrong. What can I do?

推荐答案

所以您想要整数和等于整数的浮点数?

So you want integers and floats that are equal to integers?

def is_whole(d):
    """Whether or not d is a whole number."""
    return isinstance(d, int) or (isinstance(d, float) and d.is_integer())

使用中:

>>> for test in (1, 1.0, 1.1, "1"):
    print(repr(test), is_whole(test))


1 True # integer 
1.0 True # float equal to integer
1.1 False # float not equal to integer
'1' False # neither integer nor float

然后您可以使用 all 和

You can then apply this to your list with all and map:

if all(map(is_whole, List)):

或生成器表达式:

if all(is_whole(d) for d in List):

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