Using Boolean expressions in Python

In Python, we can use Boolean expressions to perform logic and take conditional actions. For example in an if statement, in a while loop, etc.

First, we have the two binary values for Boolean Algebra:

Then, for expressions we have the following three different keywords:

Also, the following comparison operators

The above operators are all binary. For example we need a value to the left side of the operator and another value to the right side.

In comparison with the not keyword above that is unary. Meaning, that will accept a value of boolean type and return the opposite value.

Using some logic to see if a person is adult or not

				
					age = int(input("Enter age:"))
if age >= 18 then:
	print ("adult") #if True, it will print this
else:
	print("not adult")

Value	Keyword	Value	Result
True	and	True	True
False	and	True	False
False	and	False	False

Running

Value	Keyword	Value	Result
True	or	True	True
False	or	True	True
False	or	False	False

Running

Value	Keyword	Result
True	not	False
False	not	True

Running

Important The priority from highest to lowest. Keep in mind when they're combined together.

In this post we saw a brief introduction to boolean algebra and simple usages in Python.

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