Implicit conversion to boolean in if and while statements

[Andrew Berg]

This has probably been discussed before, but why is there an implicit
conversion to a boolean in if and while statements?

if not None:
	print('hi')
prints 'hi' since bool(None) is False.

If this was discussed in a PEP, I would like a link to it. There are so
many PEPs, and I wouldn't know which ones to look through.

Converting 0 and 1 to False and True seems reasonable, but I don't see
the point in converting other arbitrary values.

-- 
CPython 3.3.0b1 | Windows NT 6.1.7601.17803