pi-spigot.py

import sys
import time

class Spigot:

	def write(x) -> None:

		sys.stdout.write(str(x))
		sys.stdout.flush()
		time.sleep(0.1)
		
	def pi() -> int:

		i: int = 0
		k: int = 2
		a: int = 4
		b: int = 1
		a1: int = 12
		b1: int = 4
		
		while True:
			p: int = k * k
			q: int = 2 * k + 1
			k += 1

			a, b, a1, b1 = a1, b1, p * a + q * a1, p * b + q * b1
			d: int = a / b
			d1: int = a1 / b1

			while d == d1:
				Spigot.write(int(d))
				if i == 0:
					Spigot.write('.')
				a, a1 = 10 * (a % b), 10 * (a1 % b1)
				d, d1 = a / b, a1 / b1
				i += 1

Spigot.pi()