Example 1: Using + operator

list_1 = [1, 'a']
list_2 = [3, 4, 5]

list_joined = list_1 + list_2
print(list_joined)

Output

[1, 'a', 3, 4, 5]

In this example, + operator is used to concatenate two lists.

Example 2: Using iterable unpacking operator *

list_1 = [1, 'a']
list_2 = range(2, 4)

list_joined = [*list_1, *list_2]
print(list_joined)

Output

[1, 'a', 2, 3]

* operator allows unpacking inside the list or tuple.

Example 3: With unique values

list_1 = [1, 'a']
list_2 = [1, 2, 3]

list_joined = list(set(list_1 + list_2))
print(list_joined)

Output

[1, 2, 3, 'a']

If you want the unique items from a concatenated list, you can use list() and set(). set() selects the unique values and list() converts the set into list.

Example 4: Using extend()

list_1 = [1, 'a']
list_2 = [1, 2, 3]

list_2.extend(list_1)
print(list_2)

Output

[1, 2, 3, 1, 'a']

Using extend(), you can concatenate a list to another list as shown in example above.

Also Read:

• Python Program to Merge Two Dictionaries

Write a function to merge two sorted lists into a single sorted list.