Code simplification suggested by Sven Marnach.

cba87311 · Raymond Hettinger · cb9bf1ac · cba87311
Commit cba87311 authored Jun 25, 2011 by Raymond Hettinger
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Showing with 3 additions and 5 deletions

Lib/random.py Lib/random.py +3 -5

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--- a/Lib/random.py
+++ b/Lib/random.py
@@ -427,11 +427,9 @@ class Random(_random.Random):
        # lambd: rate lambd = 1/mean
        # ('lambda' is a Python reserved word)
-        random = self.random
+        # we use 1-random() instead of random() to preclude the
-        u = random()
+        # possibility of taking the log of zero.
-        while u <= 1e-7:
+        return -_log(1.0 - self.random())/lambd
-            u = random()
-        return -_log(u)/lambd
 ## -------------------- von Mises distribution --------------------