Learn to Code: Python for Absolute Beginners/

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List of Values

List of Values

Learn and practice manipulating lists of values in Python.

We'll cover the following...

What is a list?

In Python, a list is a comma-separated collection of values enclosed in square brackets and stored as a single variable. For example, ["apple","mango","banana"] is a list of strings. It can be stored as a variable just like any other data type.

The following program demonstrates how to create a list of string values:

Python 3.10.4
listOfFruits = ["apple","mango","banana"] # Creating a list of strings
print(listOfFruits)

In the code above:

  • We use a variable, listOfFruits, to assign the comma-separated values enclosed in square brackets.
  • We call the variable, listOfFruits, a list.

The following program demonstrates the various types of lists in Python:

Python 3.10.4
list0 = []
print("Empty list: ")
print(list0)
 
list1 = [100]
print("\nSingle-valued list: ")
print(list1)
 
list2 = [7, 7, 4, 4, 3, 3, 3, 6, 5]
print("\nList having duplicate Numbers: ")
print(list2)
 
list3 = [50, 'Learn', 10, 'To', 2.5, -1, 'Code']
print("\nList with the use of mixed values: ")
print(list3)

Hint: The \n written as part of the string in the print statements is used to display an extra line.

There are a few new things we have to understand in the code above.

  • list0, list1, list2, list3, list4, and list5 are the variables storing list values.

  • A list that has no values is an empty or a blank list (list0).

  • A list can have only one value (list1).

  • The variable list2 holds a list of integers. The ...