using init method with and without parameters

Question

I am new in python and please excuse me if my question is a basic question or is not clear.

I have a class in python and I want to set some attributes for my objects whenever I generate my objects from this class. I know, I must use __init__ method for this purpose.

The problem is that I want to have this ability that I can set my attributes in two ways. For some of my objects, I want to pass some values to __init__ method and set the attributes with those values. In addition, for some objects, I want to set some default values for attributes of my objects in __init__ method.

My question: How can I have an __init__ method that for some objects uses passed values for setting its attributes, and for some other objects, that are not passed, use default values?

Have a look at [default argument values](https://docs.python.org/3/tutorial/controlflow.html#default-argument-values) — Christian König, May 11 '17 at 08:01
It is also a good idea to know the behavior of [mutable objects as default arguments](http://stackoverflow.com/questions/1132941/least-astonishment-and-the-mutable-default-argument). — Christian König, May 11 '17 at 08:39

score 1 · Accepted Answer · answered May 11 '17 at 08:04

1

Simply equate the the parameters that you would want to be defaulted to their default value.

For instance, __init__(a,b,c=0) would give 0 as the default value to c which you can override by passing another value when object is created.

answered May 11 '17 at 08:04

Ananda

2,353
3
20
38

score 1 · Answer 2 · answered May 11 '17 at 08:05

1

def __init__(a,b,c='your default value')

answered May 11 '17 at 08:05

Exprator

25,406
6
40
52

using __init__ method with and without parameters

2 Answers2

using init method with and without parameters