Python merge two lists without duplicates

To merge two lists in Python without duplicates, you can convert them to sets and then use the union operator | to combine them. Like this:

list1 = [1, 2, 3, 4]
list2 = [3, 4, 5, 6]

result = list(set(list1) | set(list2))
print(result)  # Output: [1, 2, 3, 4, 5, 6]

In this example, we first convert both lists to sets (which remove duplicates) using the set() function. We then combine these sets using the union operator | to create a new set that only contains unique elements. Finally, we convert this result set back to a list using the list() function.

Alternatively, you could use the extend() method to combine the lists and then convert them to a set to remove duplicates:

list1 = [1, 2, 3, 4]
list2 = [3, 4, 5, 6]

result = list(set(list1.extend(list2)))
print(result)  # Output: [1, 2, 3, 4, 5, 6]

In this example, we first use the extend() method on list1 to add the elements of list2 to it. We then convert the combined list to a set using the set() function to remove any duplicates, and finally convert that set back to a list using the list() function.