Python Tutorials · Python Lists

Join Lists

Learn all about Join Lists in this comprehensive tutorial.

5 min read beginner

Join Two Lists

There are several ways to join, or concatenate, two or more lists in Python.

One of the easiest ways are by using the + operator.

python

list1 = ["a", "b", "c"]list2 = [1, 2, 3]list3 = list1 + list2
  print(list3)

Another way to join two lists is by appending all the items from list2 into list1, one by one:

python

list1 = ["a", "b" , "c"]list2 = [1, 2, 3]
for val_1 in list2:  list1.append(val_1)print(list1)

Or you can use the extend() method, where the purpose is to add elements from one list to another list:

python

list1 = ["a", "b" , "c"]list2 = [1, 2, 3]list1.extend(list2)
  print(list1)

2 questions

Which of the following is true about Join Lists?

It is strictly typedIt is evaluated at runtimeIt requires explicit memory managementIt is deprecated

What is the most common pitfall when working with Join Lists?

SyntaxErrorIndentationErrorNameErrorTypeError

Answer all questions to submit.