Replacing pandas cell value with a new list generates ValueError: Must have equal len keys and value when setting with an iterable

Question

I would like to update the value of a cell that takes a list with a new updated list. However, when I try to replace the value using .iloc I get a ValueError .

d = {'title':['GrownUps', 'Toy Story', 'Toy Story', 'Avatar', 'Avatar', 'Avatar'], 'year': [["Hello", "World"],
                                                                                            ["Not", "Object", "!"],
                                                                                            1995, 2000, 2005, 2006]}
dataset_SO=pd.DataFrame(d)

dataset_SO.iloc[0,1]=["hi", "cat", "dog"] #this line produces the ValueError

ValueError: Must have equal len keys and value when setting with an iterable

I know it might be a silly question, however trying to make this ["hi", "cat", "dog"] an object, like np.object0(["hi", "cat", "dog"]) . Or this question didn't help me to solve my issue.

Answer 1

Here is a guide as to how to update packages in python

Update python packages