Return True or False in Python

In this tutorial, we will see how to return true or false in Python.

There is often a need in programming to get to know the results in plain black or white, without any other uncertainties. This is where Boolean values come into play. Boolean returns either True or False, with no other values in between.

Boolean is one of the several built-in data types provided in Python and is utilized to return the values in the form of 0 or 1. Any expression, when evaluated in Python, is capable of returning either a True or a False value. This tutorial demonstrates the different ways available to return True or False in Python.

How to return true or false in Python?

Creating and using user-defined functions to return true or false in Python.

We can simply create a user-defined function and program it in such a way that it generates the output as either True or False. This method might come in handy in complex program customizations.

The following code creates and uses a user-defined function to return true or false in Python.

The above code provides the following output:

False

Using Comparison Operators and The print Statement to Return True or False in Python.

We can simply utilize the comparison operators along with the print statement to directly return a True or a False value as the output in Python.

The following code uses comparison operators and the print statement to return true or false in Python.

The above code provides the following output:

True
False

Using an if...else statement to return true or false in Python.

A condition, when run in an if...else statement, is also capable of generating a True or False value in Python. It is often used along with relational operators.

The following code uses an if...else statement to return true or false in Python.

The above code provides the following output:

True

Using the bool() function to return true or false in Python.

The bool() function takes any value as its argument and returns either a True or a False value with the help of the generic truth testing procedure.

The bool() function has a syntax that is simple to understand and is mentioned below.

The bool() function generally takes a single parameter value, which could be anything. If no values are passed through the bool() function, then it defaults to False.

Most of the values in this function are considered to be True, with the exception of a few values that are taken as False, all of which are mentioned below for further clarity.

  • Any values that come out to be False.
  • The value None.
  • If the passed value contains only zero’s of any given type. For Example, 0j, 0.00, etc.
  • Any empty values. For example, {}, (), [], ''.
  • Any class objects that return False or 0.

The following code uses the bool() function to return true or false in Python.

The above code provides the following output:

False
True

Using an in-built function to return true or false in Python.

Python provides several built-in functions that return only True or False values. Depending on the programmer’s needs, these functions can be utilized to return true or false in Python.

For example, we will take the isnumeric() function which takes in a string and returns a True value if the whole string contains only numeric values while returning a False value if this criteria does not match.

The following code uses the isnumeric() function to return true or false in Python.

The above code provides the following output:

True

That’s all about how to return true or false in Python,

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