python输入列表中的混合数据类型

I just started learning python a few days ago and have a quick question I can't find an answer to:

我刚刚开始学习python几天前有一个简单的问题，我找不到答案：

How would you ask for items to add to a list while keeping their data type?

在保持数据类型的同时，您如何要求将项目添加到列表中？

if i do this:

如果我这样做：

def itemType(anyList):
    for i in range(len(anyList)):
        print(type(anyList[i]))

exampleList = []

while True:
    newItem = input('Add item to list? "NO" to end input.)
    if newItem == 'NO':
        break
    else:
        exampleList.append(input())

itemType(exampleList)

Obviously all the list items are string values. Is there a way to ask for input but keep string, integer, float or whatever data type?

显然，所有列表项都是字符串值。有没有办法要求输入但保留字符串，整数，浮点数或任何数据类型？

2 个解决方案

#1

You could try casting to each variable type:

您可以尝试转换为每个变量类型：

try:
  newItem = int(newItem)
except ValueError:
  newItem = float(newItem)
except ValueError:
  pass #keep as string

#2

You could try with python build in function isnumeric.

你可以尝试在函数isnumeric中使用python build。

Here is what it look like:

这是它的样子：

def itemType(anyList):
    for i in range(len(anyList)):
        print(type(anyList[i]))

exampleList = []

while True:
    newItem = input('Add item to list? "NO" to end input.')
    if newItem == 'NO':
        break
    else:
      if(newItem.isnumeric()):
        exampleList.append(int(newItem))
      else:
        exampleList.append(newItem)

itemType(exampleList)

It only check for integer and string/float.

它只检查整数和字符串/浮点数。

#1