The question is pretty simple actually, I just couldn't figure it out. There is a
Fifa Dataset that I use, and I'd like to convert all `weight` column to integer. so: first I drop the `lbs`, then I convert to integer.

```
fifa["Weight"].head()

    0    159lbs
    1    183lbs
    2    150lbs
    3    168lbs
    4    154lbs
    Name: Weight, dtype: object

fifa.Weight = [int(x.strip("lbs")) if type(x)==str else x for x in fifa.Weight] 

```

I know that I could use this but I don't want to.

```
fifa_weight =[]

for i in fifa["Weight"]:

    if(type(i)==str):

        fifa_weight.append(int(i.strip("lbs")))

## There are some missing values in the Weight column that's why I use type(i)==str.

```

I get the values inside of the `fifa["Weight"]` column and try to put it inside the `fifa_weight` column but I wasn't able to change the columns(because of missing values) so.. how can I do that with for loop? I want my `fifa["Weight"]` column to be full of integers.