diff options
| -rw-r--r-- | Lib/random.py | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/Lib/random.py b/Lib/random.py index 987cff1..36b9565 100644 --- 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 - 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 -------------------- |