# Overview

In python, we use the `pow` function to return the power of a given number.

## Syntax
```
pow(x, y, z)
```
## Parameters

- `x`: This represents the base.
- `y`: This represents the exponent.
- `z`: This represents the modulus. This parameter is optional.

> Note: pow(x, y, z) = x**y % z

## Return value
- For `pow(x, y)` return value will be $x^y$.
- For `pow(x, y, z)` return value is equal to $x^y$ % z.

## Code 
The following code shows how to use the `pow()` in python:



# create variable x, y
x = 4
y = 8
# store result
result = pow(x, y)
print(f"Value of x: {x}") 
print(f"Value of y: {y}") 

print(f"Result for pow(x,y): {result}") 

# create variable z
print("--------------------------------")
z = 5
print(f"Value of z: {z}") 
result1 = pow(x,y,z)
print(f"Result for pow(x,y,z): {result1}") 
print("--------------------------------")




## Explanation

- Line 2–3: We create variables `x` and `y` and assign values to them.
- Line 5: We pass the values to the `pow()` function and store the result in a new variable called `result`.
- Line 6–7: We display values of `x` and `y`.
- Line 9: We display the result of `pow(x,y)`.
- Line 13:  We create the variable `z` and assign a value to it.
- Line 14: We display the value of `z`.
- Line 15: We pass all three values to the `pow()` function and store the result in a new variable called `result1`.
- Line 16: We display the result of `pow(x,y,z)`.



What is the pow() function in Python?

The pow function computes x raised to y, optionally mod z, returning x**y or (x**y)%z if z is given.