Write a program to calculate the result of the formula pi in java 𝜋=4(1−1/3+1/5−1/7+1/9−1/11+1/13−⋯−1/2𝑖−1+1/2𝑖+1) with 10000 ≤ i ≤ 100000

import unittest
    class TestPi(unittest.TestCase):
      def test_pi(self):
        self.assertAlmostEqual(pi(10000, 100000), 3.141592653589793, places=14)