how to get ironpython method parameters using .net

here is my python code:

#filename:animal.py
__metaclass__=type
class Animal():
    def __init__(self):
        self.id=-1
        self.name=''
    def doSomething(self):
        print 'animal...'
    def toString(self):
        print 'id={0},Name={1}'.format(self.id,self.name)

class Cat(Animal):
    def __init__(self):
        #super(Animal,self).__init__()
        Animal.__init__(self)
        
    def doSomething(self):
        print 'this is {0}...'.format(self.name)

print 'hello'
if __name__=='__main__':
    a=Animal()
    print a.id,a.name

#filename:animalset.py
__metaclass__=type
from animal import Animal,Cat
class AnimalSet():
    def __init__(self):
       a0=Animal()
       a0.id,a0.name=1,'unknown'
       a1=Cat()
       a1.id,a1.name=2,'Tom'
       a2=Cat()
       a2.id,a2.name=3,'Paul'
       self.arr=[a0,a1,a2]

    def set(self):
        return self.arr

    def add(self,animal):
        self.arr.append(animal)

    def find(self,index):
        for i,value in enumerate(self.arr):
            if i==index:
                return value
       

generally,we can invoke ironpython class and its members using the .net library ironpyton.dll,

here is my sample:

           ScriptEngine engine = Python.CreateEngine();
            string ironpath = @"D:\ironpythondemo\ipylib";
            engine.SetSearchPaths(new string[] { ironpath });

            ScriptSource source = engine.CreateScriptSourceFromFile(Path.Combine(ironpath, "animset.py"));
            ScriptScope scope = engine.CreateScope();
            ObjectOperations ops = engine.CreateOperations();
            source.Execute(scope);
 	    dynamic animalSet = scope.GetVariable("AnimalSet");
            dynamic animal = animalSet().find(0);
            Console.WriteLine("id:{0}", animal.id);
            Console.WriteLine("name:{0}", animal.name);

            Console.ReadKey();

it is likely to invoke ironpython members using ObjectOperations and dlr(dynamic keywords), but i want to know more about ironpython class members such as how to get python method parameters.

we can use .net reflection to get parameters from .net class easily:

      var cls = typeof(System.IO.FileStream);
            var method = cls.GetMethod("Read");
            ParameterInfo[] parameters = method.GetParameters();

So， how can i get python method paramters using .net?

for example,in the file “animalset.py” ，the “AnimalSet“ class has the method ”find“,then how to get parameters from method 'find'?