Split a column value based on condition

I am trying to split a column based on whether a slash(‘/) is present in the cell within that column. Not all cells contain slashes. Most only contain 3 letters (e.g.’ABC’).

I am trying to avoid for loops since they affect performance. I have tried the following code:

df.column.split('/',expand=True)

I get the following outut:

AttributeError: 'Series' object has no attribute 'split'

>Solution :

Almost there:

df.column.str.split('/',expand=True)