{"id":75110,"date":"2020-01-11T10:43:33","date_gmt":"2020-01-11T05:13:33","guid":{"rendered":"https:\/\/techvidvan.com\/tutorials\/?p=75110"},"modified":"2020-01-11T10:43:33","modified_gmt":"2020-01-11T05:13:33","slug":"python-booleans","status":"publish","type":"post","link":"https:\/\/techvidvan.com\/tutorials\/python-booleans\/","title":{"rendered":"Python Booleans – A data type to find two possible outcomes"},"content":{"rendered":"

In the world of computer science, Boolean is a data type<\/strong> that can only have two possible values<\/strong> either True<\/strong> or False<\/strong>.<\/p>\n

In this article, we are going to look at the Python Booleans, we will understand how to declare a boolean<\/strong> and the bool() function<\/strong>. We will also learn the operations you can perform on booleans.<\/p>\n

What are Python Booleans?<\/h3>\n

The Python Booleans is a basic data structure<\/strong> which holds either False<\/strong> or True<\/strong> values<\/strong>.<\/p>\n

A lot of functions only require a boolean<\/strong> value to return<\/strong>, for example, we used the isdisjoint()<\/strong>, issuperset()<\/strong> and issubset()<\/strong> functions. The result is only supposed to be True<\/strong> or False<\/strong>.<\/p>\n

Declaring a Boolean in Python<\/h3>\n

Booleans can be declared just like an integer<\/strong>. We assign either True or False to an identifier<\/strong> and we don\u2019t use<\/strong> quotes<\/strong> like in a string<\/strong>.<\/p>\n

Code:<\/strong><\/p>\n

Start = False\nRun = True\nprint( type(Start) )<\/pre>\n
Output:<\/strong><\/p>\n
<class \u2018bool\u2019><\/div>\n
Python bool() function<\/h3>\n
The bool()<\/strong> function is used to convert<\/strong> a value<\/strong> into a boolean value<\/strong> ( True or False). We can convert integer<\/strong>, strings<\/strong>, list<\/strong>, map<\/strong> into boolean<\/strong> values<\/strong>.<\/p>\n
Code:<\/strong><\/p>\n
print( bool(0) )\nprint( bool(10) )\nprint( bool(\u2018\u2019))\nprint( bool(\u2018hello\u2019))\nprint( bool({1,2,3}))\nprint( bool(()))<\/pre>\n
Output:<\/strong><\/p>\n
False
\nTrue
\nFalse
\nTrue
\nTrue
\nFalse<\/div>\n
Operations on Python Booleans<\/h3>\n
False<\/strong> is equivalent to zero<\/strong> and True<\/strong> is equivalent to 1<\/strong> so we can perform various operations on booleans<\/strong>.<\/p>\n
1. Arithmetic Operators in Python<\/h4>\n
1.1 Addition<\/strong><\/p>\n
Let\u2019s add<\/strong> two boolean values.<\/p>\n\n\n\n\n\n\n
True + True<\/b><\/td>\n2<\/b><\/td>\n<\/tr>\n
False + True<\/b><\/td>\n1<\/b><\/td>\n<\/tr>\n
True + False<\/b><\/td>\n1<\/b><\/td>\n<\/tr>\n
False + False<\/b><\/td>\n0<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
1.2. Subtraction<\/strong><\/p>\n\n\n\n\n\n\n
True – True<\/b><\/td>\n0<\/b><\/td>\n<\/tr>\n
False – True<\/b><\/td>\n-1<\/b><\/td>\n<\/tr>\n
True – False<\/b><\/td>\n1<\/b><\/td>\n<\/tr>\n
False – False<\/b><\/td>\n0<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
1.3. Multiplication<\/strong><\/p>\n\n\n\n\n
True * True<\/b><\/td>\n1<\/b><\/td>\n<\/tr>\n
False * True<\/b><\/td>\n0<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
 <\/p>\n\n\n\n\n
True * False<\/b><\/td>\n0<\/b><\/td>\n<\/tr>\n
False * False<\/b><\/td>\n0<\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
1.4. Division<\/strong><\/p>\n
As we know, division<\/strong> by zero <\/strong>gives us an error <\/strong>so dividing anything by False<\/strong> will also give us an exception<\/strong>.<\/p>\n
Code:<\/strong><\/p>\n
print(True\/True)\nprint( True\/False)<\/pre>\n
Output:<\/strong><\/p>\n
1.0
\nTraceback (most recent call last):
\n\u00a0\u00a0<\/b>File “<stdin>”, line 1, in <module>
\nZeroDivisionError: division by zero<\/div>\n
1.5. Modulus, exponentiation and Floor division<\/strong><\/p>\n
Code:<\/strong><\/p>\n
print( False%True)\nprint( True**False)\nprint( True\/\/True)<\/pre>\n
Output:<\/strong><\/p>\n
0
\n1
\n1<\/div>\n
2. Relational Operators in Python<\/h4>\n
All the relational operators (<,>, <=, >=, !=, ==)<\/strong> return boolean<\/strong> values after comparing<\/strong>.<\/p>\n
Try playing with relational operators on your own and see what output you will get.<\/p>\n
Code:<\/strong><\/p>\n
print( True>=True or False>True )\nprint( False<True and False!=True and False==True)<\/pre>\n
Output:<\/strong><\/p>\n
True
\nFalse<\/div>\n
3. Bitwise Operators in Python<\/h4>\n
Bitwise operations are performed bit by bit<\/strong> on binary values<\/strong>. In the case of boolean values, they are treated<\/strong> as a single bit 1<\/strong> as True<\/strong> and 0<\/strong> as False<\/strong>.<\/p>\n
Bitwise operators include &, |, ^, ~, <<, >><\/em><\/strong>.<\/p>\n
Let\u2019s see some bitwise operations<\/strong> performed on booleans:<\/p>\n\n\n\n\n\n\n\n\n
True & False<\/span><\/td>\nFalse<\/span><\/td>\n<\/tr>\n
True | False<\/span><\/td>\nTrue<\/span><\/td>\n<\/tr>\n
True ^ False<\/span><\/td>\nTrue<\/span><\/td>\n<\/tr>\n
~True<\/span><\/td>\n-2<\/span><\/td>\n<\/tr>\n
~False<\/span><\/td>\n-1<\/span><\/td>\n<\/tr>\n
True<<True<\/span><\/td>\n2<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4. Logical Operators in Python<\/h4>\n
Logical operators (\u2018and\u2019 and \u2018or\u2019)<\/strong> also work the same on boolean values.<\/p>\n
Code:<\/strong><\/p>\n
print(False or True)\nprint(False and False)<\/pre>\n
Output:<\/strong><\/p>\n
True
\nFalse<\/div>\n
5. Identity Operators in Python<\/h4>\n
At last, we will apply the boolean operations on identity operators \u2018is\u2019<\/strong> and \u2018is not\u2019<\/strong>.<\/p>\n
Code:<\/strong><\/p>\n
True is True\nFalse is 0<\/pre>\n
Output:<\/strong><\/p>\n
True
\nFalse<\/div>\n
Summary<\/h3>\n
In this article, we talked about the concept of Python booleans. We saw how you can create<\/strong> the boolean data type<\/strong>, the bool() function<\/strong> and all the operations<\/strong> you can perform with them.<\/p>\n
So this was all about TechVidvan’s Python booleans article.<\/p>\n","protected":false},"excerpt":{"rendered":"
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