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Michael Zippo
04.11.2021
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The operator ** and the pow () function calculate the power of a number in Python. The operator ** increases the number on the left to the power of the number on the right. The pow () function raises the first parameter to the power of the second parameter.
Calculating the power of a number is a common mathematical operation. For example, if you are creating a program that helps students in a sixth grade math class review powers, you will need a power function.
Python Power
In Python programming, the power of a number can be calculated in two ways: using the ** operator and using the pow () function.
This tutorial will explain how to use these two techniques to calculate the power of a number. We will see an example of using both the ** operator and the pow () method.
Python Power: ** Operator
The Python ** The is used to raise a number in Python to the power of an exponent. In other words, ** is the power operator in Python.
The ** operator requires two values ‚Äã‚Äãto perform a calculation. Here is the syntax of the ** operator:
Our program returns the following result: 25.
In this expression, 5 is the second high power. Or, in other words, the number 5 is multiplied by itself 3.
Python ** Example operator
Let’s take an example to show how the ** operator can be used in Python. Let’s say we create an app that tests sixth grade math students on their knowledge of powers.
To do this, we want to present a student with a math problem, so we want to ask them for the answer. Our program will then calculate the answer to the problem and compare it with the answer the user entered into the program.
Here is an example of a program that would allow us to test sixth graders in math on their knowledge of powers:
When we run our program and insert the answer 56, we get the following answer:
As you can see, our program calculated that our answer was incorrect and returned a message with the correct answer.
In the first line we declare a variable called number which stores the number we want to raise to mathematical power. Then, we declare exponent which is the number of the exponent to which we will raise the variable number.
On the next line, we use Python input () method to ask the user: how much is 7 to the power of 2?
We use Python data type int () conversion method to convert the user’s response to an integer. This is necessary because input () returns a string and we can only use the ** operator with numbers.
Next, we calculate the answer to the question using the ** operator. In this case, we use 7 ** 2 to calculate 7 to the power of 2.
We declare an if statement that prints the message " You’re right! ‚" to the console. If a user gets the correct answer and prints a message with the correct answer if a user is incorrect.
Power Python: pow () method
Python includes a built-in function that can be used to calculate powers: pow (). pow () takes three parameters: a base number, an exponent to which the base is high and a modulus operator.
The pow () method calculates a number to the power of another number. First, the method converts its argument to a floating point number. Then she calculates the power.
Here is the syntax of the Python pow () method:
The pow () method accepts three parameters:
- base is the number raised to the power of the exponent (mandatory)
- exponent is the number corresponding to the high base (mandatory)
- modulo performs a modulo calculation on the result of the base exponent **. If modulo is specified, the base and exponent must be integers and the exponent must be a positive value. (optional)
If the first two arguments are specified, the base declared to the power of the exponent is calculated.
If the third argument is also specified, the base declared to the power of the exponent is calculated. Then, pow () returns the form of the calculated number. This is a more advanced feature with specific use cases, so we won’t cover it in detail in this article.
To learn more about the Python module operator, read our Python Module Operator’s Guide .
Python pow () method example
Let’s use our example above to explain how the pow () works. Let’s say we create a game to test their math knowledge.
Our program asks a user for an answer to a question and calculates the answer. Next, our code compares whether the user’s response is the same as the one calculated by the program.
Our code is similar to the first example with one difference. Instead of declaring answer = 7 ** 2, we assign the value pow (7, 2) to the variable answer. If we put the answer 49 in our code, the program returns:
The ** operator and the pow () method raise a number to the power of another number. These are the advanced methods of Python.
If you’re looking for other learning resources to help you master Python, check out our Python Learning Guide .
We hope this article has helped you to resolve the problem. Apart from Javascript Power Function, check other ast Python module-related topics.
