[SciPy-User] scale parameter at 0

[Mainak Jas]

Hi everyone,

I was wondering if anyone had an insight into what happens in scipy when
the scale parameter becomes 0. In particular, I was looking into lévy
stable distribution. If we do in scipy:

>>> from scipy.stats import levy_stable
>>> levy_stable.rvs(alpha=0.99, beta=1, scale=0, loc=1, size=5)

I get:

>>> array([ 1.,  1.,  1.,  1.,  1.])

But when I look in wikipedia
<https://en.wikipedia.org/wiki/L%C3%A9vy_distribution>, it tells me that
the scale parameter should be greater than 0. Maybe it's a more general
question for all distributions, but I'm interested in this one
particularly. Why doesn't scipy throw an error when scale parameter is 0?

Thanks.

Best regards,
Mainak
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