The **`log2()` function** in Python returns the logarithm of a number to the base 2.

Figure 1 shows the mathematical representation of the `log2()` function.

> The `math` module is required for this function.

# Syntax
```python
log2(number)
```
# Parameter
This function requires a number whose logarithm base 2 is to be calculated, and it must be greater than zero.

# Return value
`log2()` returns the logarithm of a number to the base 2.


# Example


#Module required
import math

#example
print ("log2(10) : ", math.log2(10))

print ("log2(2) : ", math.log2(2))


What is math.log2() in Python?

Syntax

Parameter

Return value

Example