Extending Python Syntax with @

cookedm+news at physics.mcmaster.ca (David M. Cooke) writes:

>The lambda depends on a global variable too (or at least, a variable>up one scope).

That's quite a significant difference.  The *result* of the lambda
does not depend on a global variable.

>def make_translation_function(GCPs, type, invert=False):>    if type == 'LSF' and len(GCPs) < 12:>        # Do lots of time-consuming magic to calculate A, B, ...>        def LSF_function(x, y):>            xy = x*y>            lon = x*A + y*B + xy*C + ...>            lat = x*G + y*H + xy*I + ...>            return (lon, lat)>        return LSF_function

Ah...*that's* what I needed.  I hadn't considered that a defined
function could be passed out of the scope like that.

Thank you.

--kyler