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Control Flow
Boolean Operators: or

The boolean operator or combines two expressions into a larger expression that is True if either component is True.

Consider the statement

Oranges are a fruit or apples are a vegetable.

This statement is composed of two expressions: oranges are a fruit which is True and apples are a vegetable which is False. Because the two expressions are connected by the or operator, the entire statement is True. Only one component needs to be True for an or statement to be True.

In English, or implies that if one component is True, then the other component must be False. This is not true in Python. If an or statement has two True components, it is also True.

Let’s take a look at a couple example in Python:

>>> True or (3 + 4 == 7) True >>> (1 - 1 == 0) or False True >>> (2 < 0) or True True >>> (3 == 8) or (3 > 4) False

Notice that each or statement that has at least one True component is True, but the final statement has two False components, so it is False.

Instructions

1.

Set the variables statement_one and statement_two equal to the results of the following boolean expressions:

Statement one:

(2 - 1 > 3) or (-5 * 2 == -10)

Statement two:

(9 + 5 <= 15) or (7 != 4 + 3)
2.

The registrars office at Calvin Coolidge’s Cool College has another request. They want to send out a mailer with information on the commencement ceremonies to students who have met at least one requirement for graduation (120 credits and 2.0 GPA).

Write a function called graduation_mailer that takes two inputs, gpa and credits and checks if a student either has 120 or more credits or a GPA 2.0 or higher and if so returns True.

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