Where are the math functions?

[Russell E. Owen]

In article <slrn8k8dfv.tu.hzhu at mars.localdomain>, 
hzhu at users.sourceforge.net wrote:

>I'm quite puzzled by not being able to find most of the common special
>functions, such as (incomplete) gamma, beta and bessel and erf.
>
>This arrises from effort to provide statistical functions for the MatPy
>package.  Many stat functions require incomplete gamma/beta and some
>variants.
>...

The random module (which is available on all platforms) offers beta and 
gamma functions. I can't comment on incomplete gamma, bessel and erf. I 
found the information about the random module in "Python Essential 
Reference" by David Beazley; the index lists beta and gamma, but not the 
others.

-- Russell