Python function to merge unique values form multiple lists to one list
function, list, merge, python
Solution
You may just need sets:
>>> a = [1,2,3,4]
>>> b = [3,4,5,6]
>>> c = [5,6,7,8]
>>>
>>> uniques = set( a + b + c )
>>> uniques
set([1, 2, 3, 4, 5, 6, 7, 8])
>>>
Problem
I am pretty new to Python. I am trying to write a function that will merge unique values in separate lists into one list. I keep getting a result of a tuple of lists. Ultimately I would like to have one list of unique values from my three lists -a,b,c. Can anyone give me a hand with this? ``` def merge(*lists): newlist = lists[:] for x in lists: if x not in newlist: newlist.extend(x) return newlist a = [1,2,3,4] b = [3,4,5,6] c = [5,6,7,8] print(merge(a,b,c)) ``` I am getting a Tuple of Lists ``` ([1, 2, 3, 4], [3, 4, 5, 6], [5, 6, 7, 8]) ```