In "Rabbitville", the rabbit population squares each year. e. g. If you start with 4 rabbits, you'll have 16 in 1 year, and 256 in 2 years. Once the population exceeds 10,000 bunnies, food will be scarce, and population will begin to decrease.

Write a function years_till_no_carrots that includes a WHILE loop. Given a single integer (# of starting rabbits) as an input, your function should output the number of whole years until the number of rabbits becomes larger than 10000. e. g. years_till_no_carrots(4) = 3 (start with 4 rabbits, population greather than 10000 & food scarce in 3 years)