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

3.16 Boolean Operators and, or and not

The conditional operators >, <, >=, <=, == and != can be used to form simple conditions such as grade >= 60. To form more complex conditions that combine simple conditions, use the and, or and not Boolean operators.

Boolean Operator and

To ensure that two conditions are both True before executing a control statement’s suite, use the Boolean and operator to combine the conditions. The following code defines two variables, then tests a condition that’s True if and only if both simple conditions are True—if either (or both) of the simple conditions is False, the entire and expression is False:

In [1]: gender = 'Female'

In [2]: age = 70

In [3]: if gender == 'Female' and age >= 65:
   ...:     print('Senior female' ...