Time for action – assigning values to variables

Assigning values to variables in Python works in a similar way to most programming languages.

  1. For instance, assign the value of 2 to a variable named var as follows:
    >>> var = 2
>>> var
2
  2. We defined the variable and assigned it a value. In this Python code, the type of the variable is not fixed. We can make the variable in to a list, which is a built-in Python type corresponding to an ordered sequence of values. Assign a list to var as follows:
    >>> var = [2, 'spam', 'eggs']
>>> var
[2, 'spam', 'eggs']

    We can assign a new value to a list item using its index number (counting starts from 0). Assign a new value to the first list element:

    >>> var
['ham', 'spam', 'eggs']
  3. We can also swap values easily. Define two variables and swap their values:
    >>> a = 1
>>> b = 2
>>> a, b = b, a
>>> a
2
>>> b
1

What just happened?

We assigned values to variables and Python list items. This section is by no means exhaustive; therefore, if you are struggling, please read Appendix B, Additional Online Resources, to find recommended Python tutorials.

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