help with this please
when i type my list like this for example
list=(1, 2, 3, 4) return (1, 2, 3, 4) list + [5, 6]
it says error someone help me please
[MOD: added formatting -cf]
Chris FreemanTreehouse Moderator 59,490 Points
Be careful not to use built-in keywords as variable names.
list is a keyword. By using it as a variable name it can not be used to create a new list using the constructor
>>> list <class 'list'> >>> list = (1, 2, 3, 4) >>> list (1, 2, 3, 4) >>> type(list) <class 'tuple'>
By using parens instead of square brackets or braces [ ], you've created a tuple. A tuple can not be changed, that is, it's immutable.
list + [5, 6] you are attempting to concatenate a tuple with a true list. This is not possible.
>>> list + [5, 6] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: can only concatenate tuple (not "list") to tuple
items= list((1, 2, 3, 4)) # or items = [1, 2, 3, 4] # then use items + [5, 6]
Post back if you need more help. Good luck !!
Haydar Al-Rikabi5,970 Points
Chris Freeman I tried your suggestion to create a list as such:
items= list(1, 2, 3, 4)
but it is returning the following error:
Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: list() takes at most 1 argument (4 given)
Aren't we supposed to pass an iterable to list(), for example a tuple:
items = list((1, 2, 3, 4))