log2()

log2(x) returns logarithm of x with base 2
import math
print(math.log2(2))  # 1.0
print(math.log2(4))  # 2.0
print(math.log2(5))  # 2.321928094887362
Using negative number
For any value less than or equal to 0 , we will get ValueError
import math
print(math.log2(-2))
Above code will generate error.

log modf()

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