Python3-TypeException在给定的情况下采用1个参数2

Question

The program i am working on have a class with constructor defined as follow :

def Oracle(object) :
Agold = None
sentence = None

def __init__(self, sentence, Agold):
    self.Agold = Agold
    self.sentence = sentence

but, when i call the constructor in my main method, as follow :

oracle = Oracle(words, ref_tree)

python 3 give me this error :

Traceback (most recent call last):
File "oracle_test.py", line 52, in test_exemple
oracle = Oracle(words, ref_tree)
TypeError: Oracle() takes 1 positional argument but 2 were given

i don't understand the origin of this problem, and i don't see what gone wrong.

Can someone give me an explanation ? Thanks

Answer 1

You defined Oracle as a function instead of a class. Use class instead of def . Also, assuming Agold and sentence are supposed to be instance variables instead of class variables, Agold = None and sentence = None are not needed (see this ).

class Oracle(object):
    def __init__(self, sentence, Agold):
        self.Agold = Agold
        self.sentence = sentence