Type Error: list indices must be integers or slices, not str

Question

What is the issue with my code?Keep getting

TypeError: list indices must be integers or slices, not str"*

ata2 = [{'one': 1, 'two': 2}, {'one': 5, 'two': 10, 'three': 20}]


pd.DataFrame(ata2,index=['a','b'],columns=['one','two','three'])

ata2['four']=ata2['one']* ata2['two']

Answer 1

If you are trying to do a column multiplication, you need to set the ata2 as a pd.DataFrame , so, you need this: ata2 = pd.DataFrame(ata2,index=['a','b'],columns=['one','two','three'])

Otherwise, ata2 is still a list , instead of a DataFrame - and you can only access a list by using the indices which are int !