I need some help.

I have a dataframe , like :

```
A B C D
1 2 3 
5 6 7 
5 7 5

```

And I would like with python to get the D values from an input:

for example

```
for i in df.iterlupes():
    d= input(" put the number:")
    df["d"] = d

```

and then for example I will input 1 2 3 , I will have:

```
A B C D
1 2 3 1
5 6 7 2
5 7 5 3

```

How can I do that please ? Thanks a lot !!!