`pow(x, y[, z])`

is a built-in function in Python 3 to calculate `x`

to the power `y`

and if `z`

is present , returns `x`

to the power `y`

modulo `z`

## Arguments

The arguments must have numeric types.

This function takes two arguments, `x`

and `y`

, as well as three, `x`

,`y`

and `z`

.

If `z`

is present, `x`

and `y`

must be of integer types, and y must be non-negative.

## Return

If `z`

is present it returns `x`

to the power `y`

modulo `z`

.If only `x`

and `y`

are present it returns `x`

to the power `y`

(same as x**y).

## Example

```
print(pow(2,4)) # prints 16
print(pow(10,-2)) # prints 0.01
print(pow(4,3,5)) # prints 4
```