diff --git a/Python/numbapip.py b/Python/numbapip.py
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+++ b/Python/numbapip.py
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+#
+# numbapip.py
+# Neil Gershenfeld 2/6/20
+# calculation of pi by a Numba parallel sum
+# pi = 3.14159265358979323846 
+#
+
+import time
+from numba import njit,prange
+
+NPTS = 1000000000
+@njit(parallel=True)
+def calc():
+   a = 0.5
+   b = 0.75
+   c = 0.25
+   pi = 0
+   for i in prange(1,(NPTS+1)):
+      pi += a/((i-b)*(i-c))
+   return pi
+pi = calc() # first call to compile the function
+start_time = time.time()
+pi = calc() # second call uses the cached compilation
+end_time = time.time()
+mflops = NPTS*5.0/(1.0e6*(end_time-start_time))
+print("NPTS = %d, pi = %f"%(NPTS,pi))
+print("time = %f, estimated MFlops = %f"%(end_time-start_time,mflops))