![]() In this case, it may be more straightforward simply to use the numpy approach. However, if you’re working with numerical calculations, there’s a good chance you’re using numpy already. So, when would you use one over the other?īecause the math library is part of the standard Python library, using this approach means you’re not loading any additional dependencies. Using the code above, we can see that the two values are the same. We can do this by using the = comparison operator: # Comparing the two methods of getting pi in Python Before diving into that discussion, let’s first take a look if the value of the two constants is equal. At this point, you may be wondering which method is better to use. So far, you’ve learned two different ways to access the value of pi. Should You Use NumPy or Math to Get Pi in Python? In the next section, we’ll explore when it’s better to use one method over the other. Similarly, we can simply import the constant directly, if we only intend to use that value and nothing else from the library: # Only Importing Pi from Python numpy This method works similarly to how we would use the math library. Once the library is installed, we can access the value of pi by using the constant in the library: # Getting the Value of Pi in NumPy Use either one of these installation methods, depending on your preferred package manager. This can be done by using either pip or conda, as shown below: $ pip install numpy Since NumPy isn’t part of the standard Python library, you may need to install it. Similar to the math library, the Python NumPy library provides the value of the pi constant. In the next section, you’ll learn how to use the NumPy library to access the value of pi. ![]() This allows you to use the constant without needing to reference the library. This can be done as shown below: # Only Importing Pi from Python math If you’re only planning on using the constant from the library, it may make sense to import only that constant, rather than the whole library. We can see that the constant pi is available simply by accessing the constant in the library. Let’s see how we can import the value: # Using math to Get the Value of Pi Because the math library is part of the standard Python library, you don’t need to install anything additional. In this section, you’ll learn how to use the math library to get the value of pi in Python. Now that you have a good understanding of the nature and uses of pi, let’s see how we can get this important mathematical constant in Python! Get Pi in Python Using Math Understanding how we can calculate Pi with the circumference and diameter of a circle Similarly, the decimal representation of the value never ends and never moves into a permanently repeating pattern. However, the fraction 22/7 is often used to represent its value as an approximation. Pi itself is an irrational number, meaning that the value cannot be represented as a common fraction. It’s commonly used in Euclidian geometry to represent the ratio of a circle’s circumference to its diameter. The number pi, π, is a mathematical constant that’s approximately equal to 3.14159. ![]() Should You Use NumPy or Math to Get Pi in Python?.
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