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Using list methods to add data

You can use the .append() and .extend() methods to add elements to a list.

The .append() method increases the length of the list by one, so if you want to add only one element to the list, you can use this method.

x = [1, 2, 3]
x.append(4)
x

[1, 2, 3, 4]

The .extend() method increases the length of the list by the number of elements that are provided to the method, so if you want to add multiple elements to the list, you can use this method.

x = [1, 2, 3]
x.extend([4, 5])
x

[1, 2, 3, 4, 5]

This exercise is part of the course

Introduction to Python for Finance

View Course

Exercise instructions

  • Add a single element, 'Amazon.com', to the names.
  • Add the list more_elements which consists of two elements to names.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Append a name to the list names
names.____('Amazon.com')
print(names)

# Extend list names
more_elements = ['DowDuPont', 'Alphabet Inc']
names.____(____)
print(names)
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