**Python Puzzles**

This type of puzzle is called a Markov Chain.

In Probability Land, on a sunny day there is an equal probability of the next day being sunny or rainy. On a rainy day, there is a 70% chance it will rain the next day, and a 30% chance it will be sunny the next day.

On average, how many rainy days are there in Probability Land?

It rains approximately 62% of the time in Probability Land.

import numpy as np result = [] for _ in range(10_000): sunnydays = 0 forecast = np.random.binomial(1,.7,1).item() for _ in range(365): if forecast == 1: sunnydays += 1 forecast = np.random.binomial(1,.5,1).item() else: forecast = np.random.binomial(1,.3,1).item() result.append(sunnydays) pct_rain = ((365 - (sum(result)/len(result)))/365) print('It rains approximately ' + '{0:.0%}'.format(pct_rain) + ' of the time in ProbabilityLand.')