From 5279fb99cb309b422c2ba11eadc01368b6d997f1 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Sat, 25 Jun 2011 11:30:53 +0200 Subject: [PATCH] Code simplification suggested by Sven Marnach. --- Lib/random.py | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/Lib/random.py b/Lib/random.py index 59a40526f8a..ccc304dd66d 100644 --- a/Lib/random.py +++ b/Lib/random.py @@ -402,11 +402,9 @@ class Random(_random.Random): # lambd: rate lambd = 1/mean # ('lambda' is a Python reserved word) - random = self.random - u = random() - while u <= 1e-7: - u = random() - return -_log(u)/lambd + # we use 1-random() instead of random() to preclude the + # possibility of taking the log of zero. + return -_log(1.0 - self.random())/lambd ## -------------------- von Mises distribution --------------------