Explain what the expression 1 + (decimal and floor(log2(decimal))) calculates. In particular, explain the purpose of the logical and operation in the expression?

from math import floor, log2 def decimal_to_binary (decimal): binary_str = num_bits = 1 + (decimal and floor (log2 (decimal))) for i in range (num_bits): binary_str = str(decimal % 2) + binary_str decimal //= 2 return binary_str executed in 4ms, finished 15:44:04 2021-02-23