[PYTHON MATRIX-SIG] bugs

[James Hugunin]

Perry Stoll suggests a small bug in the where function, and he's of
course correct. The change has been made.

def where(condition, x, y):
	"""where(condition,x,y) is shaped like condition and has elements of x and
	y where condition is respectively true or false
	"""
	return condition.choose(y, x) # removed condition as first argument

This and similar functions will be retained in the great renaming that
is beginning even as we speak.  They might, however, be moved to a shortcuts
module that wouldn't always be automatically loaded.

--

David Ascher's bug is a little more troublesome, but it too is being
fixed.

> Why should the type of the first argument to choose() be valued over the
> most generic type?

In short, it shouldn't, and it won't in the next release.

-Jim


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