diff --git a/Demo/scripts/pi.py b/Demo/scripts/pi.py
index 19733cb..0740cd0 100755
--- a/Demo/scripts/pi.py
+++ b/Demo/scripts/pi.py
@@ -12,7 +12,7 @@
 
 def main():
     k, a, b, a1, b1 = 2, 4, 1, 12, 4
-    while 1:
+    while True:
         # Next approximation
         p, q, k = k*k, 2*k+1, k+1
         a, b, a1, b1 = a1, b1, p*a+q*a1, p*b+q*b1
@@ -25,7 +25,6 @@
 
 def output(d):
     # Use write() to avoid spaces between the digits
-    # Use str() to avoid the 'L'
     sys.stdout.write(str(d))
     # Flush so the output is seen immediately
     sys.stdout.flush()