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Diffstat (limited to 'Lib/random.py')
| -rw-r--r-- | Lib/random.py | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Lib/random.py b/Lib/random.py index 70603ca..95f4411 100644 --- a/Lib/random.py +++ b/Lib/random.py @@ -396,9 +396,11 @@ class Random(_random.Random): def expovariate(self, lambd): """Exponential distribution. - lambd is 1.0 divided by the desired mean. (The parameter would be - called "lambda", but that is a reserved word in Python.) Returned - values range from 0 to positive infinity. + lambd is 1.0 divided by the desired mean. It should be + nonzero. (The parameter would be called "lambda", but that is + a reserved word in Python.) Returned values range from 0 to + positive infinity if lambd is positive, and from negative + infinity to 0 if lambd is negative. """ # lambd: rate lambd = 1/mean |