def parameters(only=None, exclude=None, ignore='self'):
"""Returns a dictionary of the calling functions
parameter names and values.
The optional arguments can be used to filter the result:
only use this to only return parameters
from this list of names.
exclude use this to return every parameter
*except* those included in this list
of names.
ignore use this inside methods to ignore
the calling object's name. For
convenience, it ignores 'self'
by default.
"""
import inspect
args, varargs, varkw, defaults = \
inspect.getargvalues(inspect.stack()[1][0])
if only is None:
only = args[:]
if varkw:
only.extend(defaults[varkw].keys())
defaults.update(defaults[varkw])
if exclude is None:
exclude = []
exclude.append(ignore)
return dict([(attrname, defaults[attrname])
for attrname in only if attrname not in exclude])
