how to refactor nested for loop into smaller for loop assume each of them independent?

[Random832]

On Sat, Oct 8, 2016, at 07:29, Steve D'Aprano wrote:
> The oldest version I have access to is the *extremely* primitive 0.9. Not
> surprisingly, it doesn't have xrange -- but it lacks a lot of things,
> including globals(), map(), named exceptions, "" strings ('' is okay),
> exponentiation, and more.

Really? I'm not sure exactly what you mean by "named exceptions", but
0.9.1 has RuntimeError, EOFError, TypeError, MemoryError, NameError,
SystemError, and KeyboardInterrupt... but exceptions aren't objects,
they're strings.

They're caught by identity, though - "except 'type error'" fails to
catch TypeError, and vice versa.

The most interesting thing that I remember noticing about python 0.9.1
is that == and != don't exist - the equality comparison operators were
<> and a context-sensitive =.