Is there a way to introspect a function or class' required arguments,
particularly keyword arguments?
I can easily use a dictionary since it is my own function that I wish
to introspect. I haven't tested the below code yet, but e.g.
obj = getattr(self, 'obj')()
preprocessors = {'Card':[{'obj_attr':'mastery',
'call':mastery,
'args_dict':['front', 'back']}
]
}
obj_preprocessors = preprocessors.get(obj.__name__, None)
if obj_preprocessors:
for preprocessor in obj_preprocessors:
function_name = preprocessor['call'].__name__
args_dict = {}
for arg in preprocessor['args_dict']:
if self.query_dict.has_key(arg):
args_dict[preprocessor[arg]] = self.query_dict.get(arg)
else:
self.error = 'Required argument %s omitted for
function %s' % (arg, function_name)
break
if not hasattr(self, error):
try:
setattr(obj, preprocessor['obj_attr'],
preprocessor['call'](args_dict))
except:
self.error = 'Preprocessor %s failed.' % function_name
else:
break
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