How to calculate Exponents in Python
Exponentiation is the operation in which a number is multiplied by itself a certain number of times.
Just like in the real-world, using exponents is useful in programming languages whenever you want to repeat multiplication.
In this post, we'll look at how to calculate the exponent of a number in Python.
Using the ** operator
The easiest way to calculate the exponent of a number is to use the
This operator uses the left-hand side number to be the base and the right-hand side number to be the exponent.
For example, this is how to calculate the exponent of 2 to the power of 3:
print(2 ** 3)
This does the same thing as the following:
print(2 * 2 * 2)
Using the pow() function
You can alternatively use Python's
math module to calculate the exponent of a number.
This module exposes a function called
pow() which takes two arguments, the base and the exponent.
Simply import the
math module and then use the
pow() function to calculate an exponent:
import math print(math.pow(2, 3))
You can also omit the
math module if you want to use the
pow() function directly.
There is a slight difference between these two scenarios, however. The difference is that
math.pow will always return a
pow will only return a
float if either number is already a
Another thing to note is that
math.pow can result in an overflow error if the exponent is too large.
The error will look like this:
OverflowError: math range error
In this post, we looked at the best ways to calculate exponents in Python.
To summarize, you can either use the
** operator or import the
math module and use the
pow() function or
math.pow() to calculate exponents.
Hopefully, this has been helpful to you. Thanks for reading!
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