How To Type Float In Python

In this tutorial, we will explore the concept of floating-point numbers in Python, also known as “floats”.

Floats in Python are used to represent numbers that contain a decimal point. They are essential when performing calculations that involve non-integers and for accurate precision in numerical operations.

We will cover how to create and use float variables, as well as discuss some of the common functions available to manipulate floats in Python.

Step 1: Creating a Float Variable

There are several ways to create a float variable in Python:

  1. Direct assignment: Assign a float value directly to a variable. For example:
  1. Using the float() function: Convert an integer or a string into a float using the float() function:

Example:

Step 2: Performing Arithmetic Operations on Floats

You can perform the standard arithmetic operations on float variables in Python, such as addition, subtraction, multiplication, and division. The outcome will be another float value. Here’s an example:

Output:

Step 3: Using Functions from the math library

The math library in Python provides several built-in functions that make it easier to work with floats. Some of the commonly used functions include ceil(), floor(), sqrt(), pow(), sin(), and cos(). To use these functions, import the math library first and call these functions using the math prefix. For example:

Here’s a sample output:

Full Code Example

Output

3.14
5.0
3.14

Conclusion

In this tutorial, we’ve learned how to create and use float variables in Python, as well as some common functions from the math library to manipulate floats.

Working with floats is essential when dealing with decimal numbers and performing precise calculations in your programs.

With the knowledge you’ve gained here, you should be able to comfortably incorporate floats into your Python projects.