"""Mathematical functions."""
import random
[docs]class RandomNumberGenerator:
"""
Generate random numbers.
Python uses the Mersenne Twister as the core generator.
It produces 53-bit precision floats and has a period of 2**19937-1
"""
def __init__(self, seed: int = 494) -> None:
"""494 = sum([ord(i) for i in 'HADDOCK'])."""
self.seed = seed
self.random = random.Random()
self.random.seed(self.seed)
def __call__(self,
lower_limit: float = 0.,
upper_limit: float = 1.) -> float:
"""Generate a random number between range."""
return self.random.uniform(lower_limit, upper_limit)
[docs] def randint(self, lower_limit: int = 0, upper_limit: int = 9) -> int:
"""Generate a random integer."""
return int(self() * (upper_limit + 1)) + lower_limit