Python TypeError inheritance

Question

First, sorry if the question seems to be similar to some previously raised issues; but they didn't help me.I'm trying to use a parent class within a child one. Both classes receive the same input as below:

The parent (PA.py):

class The_Parent():
    def __init__(self,in1=None,in2=None,in3=None):
#
# and the rest of codes ...

And the child (CH.py):

class The_Child(The_Parent)
    def __init__(self,in1,in2,in3):
       The_Parent.__init__(self,in1,in2,in3)
#
#
# the rest of code ...

And now, the main function:

# import requirements and assigning the variables (in1, in2, and in3)
# 
obj = CH.The_Child(in1,in2,in3)
#
#

And the error I got:

TypeError: The_Child() takes 1 positional argument but 3 were given

Just a point, both child and parent should receive the same variables...

This code does not give the behaviour you claim. Please post a complete, reproducible example. — Daniel Roseman, Feb 09 '18 at 12:02
Not related but `The_Parent.__init__(self, in1, in2, in3)` is just wrong (You will lose multiple inheritance benefits). Use `super(The_Child, self).__init__(in1, in2, in3)` — Matias Cicero, Feb 09 '18 at 12:03
First thanks, unfortunately, I'm getting the same error using the mentioned super structure. — ir0098, Feb 09 '18 at 12:07
@ir0098 I just said it was not related. By the way, `class The_Parent():` will yield unexpected behavior. Use `class The_Parent(object):` instead. — Matias Cicero, Feb 09 '18 at 12:09
you can write dummy code and post it, then only it would be more feasible to solve your issue. — justjais, Feb 09 '18 at 12:09
# The begining of the Parent class: if None in (in1,in2,in3): sys.exit() self.in1 = in1 self.in2 = in2 self.in3 = in3 — ir0098, Feb 09 '18 at 12:11
Please post a [mcve]. Also, specify which version of Python you are using. — khelwood, Feb 09 '18 at 12:14
@MatiasCicero again the same error with class The_Parent(object): — ir0098, Feb 09 '18 at 12:16
@ir0098 Please note that my code suggestions **are not the solution to your problem**. You are having a different kind of issue and I'm just posting unrelated comments on how you can better improve your current code. — Matias Cicero, Feb 09 '18 at 12:32

score 0 · Accepted Answer · answered Feb 09 '18 at 12:07

0

If you are trying to call Parent constructor, you can call it using "super" keyword of Python, for more reference you can follow following link: How to invoke the super constructor?

answered Feb 09 '18 at 12:07

justjais

344
3
13

thanks guy, just managed to solve the problem using Super structure as: super(The_Parent,self).__init__(in1,in2,in3) – ir0098 Feb 09 '18 at 12:37

Python TypeError inheritance

1 Answers1