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

3.6 if…else and if…elif…else Statements

The if…else statement performs different suites, based on whether a condition is True or False. The pseudocode below displays 'Passed' if the student’s grade is greater than or equal to 60; otherwise, it displays 'Failed':

If student’s grade is greater than or equal to 60         Display 'Passed' Else         Display 'Failed'

In either case, the next pseudocode statement in sequence after the entire If…Else is “performed.” We indent both the If and Else suites, and by the same amount. Let’s create and initialize (that is, give a starting value to) the variable grade, then show and execute the Python if…else statement for the preceding pseudocode:

In [1]: grade = 85

In [2]: if grade >= 60:
   ...: print( ...