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Python Python Collections (2016, retired 2019) Lists Creating lists

Posted by Mark Bekhet
Mark Bekhet
900 Points

the method that I should use.

Hi, I want to know what is the error that I am making in this objective. It says that the second list doesn't have two items and that the my_list should have a total of 6.

lists.py 
my_list = ["Mark" , "vegetables got him" , 3 , 5 , 6]
my_list2 =["Kiro" ,True]
my_list.extend(my_list2)

1 Answer

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hi Mark, you do not need to create a second variable and then add it to the first list. Just declare ["Kiro" , True] inside of my_list

If you would like to add a new list on the end of a second list I would suggest using append() instead of extend(). Extend will take whatever is in the second list and add the items one after another. 

>>> my_list = ["Mark" , "vegetables got him" , 3 , 5 , 6]
>>> my_list
['Mark', 'vegetables got him', 3, 5, 6]
>>> my_list2 =["Kiro" ,True]
>>> my_list.append(my_list2)
>>> my_list
['Mark', 'vegetables got him', 3, 5, 6, ['Kiro', True]]
>>> my_list.extend(my_list2)
>>> my_list
['Mark', 'vegetables got him', 3, 5, 6, 'Kiro', True]
>>>

Append appends the entire list but extend extends does not.

Makes sense?