code: def calcPi():
      q, r, t, k, n, l = 1, 0, 1, 1, 3, 3
      while True:
          if 4 * q + r - t < n * t:
              yield n
              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
  
label_desc: Use image node_id 1 for calling a global function with example usage: calcPi() without return types