boolean type python function

boolean type python function

This chapter fundamental concept of programming This chapter introduces another fundamental making choices. for more information visit this site: python boolean function We do this whenever we want our program to behave dif only depending on the data it's working with. For example, we might w. to do different things depending on whether a solution is acidic or basic depending on whether a user types yes or no in response to a call on built function input. We'll introduce statements for making choices in this chapter called contri Now statements (because they control the way the computer executes programs). These statements involve a Python type that is used to represent truth and falsehood.

Unlike the integers, floating-point numbers, and strings we have already seen, this type has only two values and three operators.

A Boolean Type

  In Python, there is a type called bool (without an "e"). Unlike int and float, which have billions of possible values, bool has only two: True and False. True and False are values, just as much as the numbers 0 aid +3.7.

Boolean Operators

There are only three basic Boolean operators: and. or. and not. not has the highest precedence, followed by and followed by or.

not is a unary operator: it is applied to just one value. like the negation expression - 3 +

2). An expression involving not prod

1. An expression involving not produces True if the original value is False, and it produces False if the original value is true:

>>> not True False >>> not False True

In the previous example, instead of not true. we could simply use False, and instead of not False, we could use True. Rather than apply not directly to a Boolean value, we would typically apply not to a Boolean variable or a more complex Dolcan expression. The same goes for the following examples of the Boolean operators and or. so although we apply them to Boolean constants in the following examples, we'll give an example of how they are typically used at the end of# this section.

and is a binary operator, the expression left and right produces True if both left and right are True. and it produces False otherwise:

>>> True and True True >>> False and False False >>> True and False False >>> False and True False

or is also a binary operator. It produces True if either operand is True, and it produces False only if both are False:

>>> True or True>>> False or False False

>>> True or False

True