问题

I want to get the user to input a list of numbers (1 or 2 digits ex 2,34,4,35,36) and for python to send back how much total numbers there is but the problem is python counts each number as a unit when I want it to know the difference between 2 and 34 for example.

我想让用户输入一个数字列表（1或2位数，例如2,34,4,35,36），然后让Python返回总共有多少个数字，但问题是Python将每个数字都计算为一个单位，而我希望它能区分2和34之间的差异。

Initially , I tried the len function then I cam here where I saw the count function but even then it still doesn't work

最初，我尝试了len函数，然后我来到这里看到了count函数，但即使那样它仍然不起作用

count(i)```

（`count`甚至没有被识别？出现某种原因）

I decided to go back to `len` and I did this

我决定回到`len`，然后我做了这个

```i = input ("enter a list")
print ( len(i) )```

It did work but it counts every single number separately it even counts the commas!!!

它确实起作用，但它将每个数字都分开计算，甚至包括逗号！

I put the list  `34,34,34,35` and I got `11` and I wanted to get `4` because that's how many numbers there are

我输入了列表`34,34,34,35`，结果得到了`11`，但我希望得到`4`，因为那里有4个数字

Thank you for taking the time to read my ranting

谢谢您抽出时间阅读我的抱怨

<details>
<summary>英文:</summary>

So I want to get the user to input a list of numbers `(1 or 2 digits ex 2,34,4,35,36)` and for python to send back how much total numbers there is  but the problem is python counts each number as a unit when I want it to know the difference between `2` and `34` for example. Idk my brain isn&#39;t braining.

Initially , I tried the `len` function then I cam here where I saw the count function but even then it still doesn&#39;t work

i = input("enter a list")
count(i)

(count isnt even recognized? for some reason)

I decided to go back to `len` and I did this

i = input ("enter a list")
print ( len(i) )

It did work but it counts every single number separately it even counts the commas!!!

I put the list  `34,34,34,35` and I got `11` and I wanted to get `4` because that how much numbers there is

Thank you for talking the time to read my ranting

</details>


# 答案1
**得分**: 1

你最好使用空格而不是逗号。这样，你可以使用内置的 Python `.split()` 方法，它会将字符串拆分为列表。

例如，以下代码的输出如下。 (虽然你的代码使用了输入，但由于输入本质上也是字符串，我只是创建了一个具有字符串值的变量，因为这与输入的变量类型相同。)
```python
text = "34 35 36 37"
text = text.split()
print(text)
print(len(text))

这将产生以下输出:

['34', '35', '36', '37']
4

text = "34 35 36 37"
text = text.split()
print(text)
print(len(text))

['34', '35', '36', '37']
4

答案2

得分: 0

你可以执行 i = (input("输入一个列表").count(",")) + 1

这会计算逗号的数量，并加一，因为最后一个数字不会有逗号。

就像上面的评论者所说，如果你想要一个以逗号分隔的列表，你可以执行

i = input("输入一个列表").split(',')
print(len(i))

i = input("enter a list").split(',')
print(len(i))

答案3

得分: 0

The variable i is a string, therefore when you use len() it will count all the characters. To count the numbers separated by commas you can use the split function.

i = input("enter a list") # 34,34,34,35
print(len(i.split(",")))

 i = input("enter a list")  #  34,34,34,35
 print(len(i.split(",")))