tingplenting · October 16, 2018 04:18 · Oct 16, 2018 · Oct 16, 2018
diff --git a/tatar1000pi.py b/tatar1000pi.py
@@ -0,0 +1,56 @@
+def calcPi(limit):  # Generator function
+    """
+    Prints out the digits of PI
+    until it reaches the given limit
+    """
+
+    q, r, t, k, n, l = 1, 0, 1, 1, 3, 3
+
+    decimal = limit
+    counter = 0
+
+    while counter != decimal + 1:
+            if 4 * q + r - t < n * t:
+                    # yield digit
+                    yield n
+                    # insert period after first digit
+                    if counter == 0:
+                            yield '.'
+                    # end
+                    if decimal == counter:
+                            print('')
+                            break
+                    counter += 1
+                    nr = 10 * (r - n * t)
+                    n = ((10 * (3 * q + r)) // t) - 10 * n
+                    q *= 10
+                    r = nr
+            else:
+                    nr = (2 * q + r) * l
+                    nn = (q * (7 * k) + 2 + (r * l)) // (t * l)
+                    q *= k
+                    t *= l
+                    l += 2
+                    k += 1
+                    n = nn
+                    r = nr
+
+
+def main(n):  # Wrapper function
+
+    # Calls CalcPi with the given limit
+    pi_digits = calcPi(n)
+
+    i = 0
+
+    # Prints the output of calcPi generator function
+    # Inserts a newline after every 40th number
+    for d in pi_digits:
+            print(d, end='')
+            i += 1
+            if i == 40:
+                print("")
+                i = 0
+
+if __name__ == '__main__':
+    main(1000)