Intro to Python for Computer Science and Data Science: Learning to Program with AI, Big Data and The Cloud

2.7 Decision Making: The if Statement and Comparison Operators

A condition is a Boolean expression with the value True or False. The following determines whether 7 is greater than 4 and whether 7 is less than 4:

In [1]: 7 > 4
Out[1]: True

In [2]: 7 < 4
Out[2]: False

True and False are keywords—words that Python reserves for its language features. Using a keyword as an identifier causes a SyntaxError. True and False are each capitalized.

You’ll often create conditions using the comparison operators in the table at the top of the next page:

2.7-4 Full Alternative Text

Operators >, <, >= and <= all have the same precedence. Operators == and != ...