I dont understand that error

Question

I think that
a.,b are class variables.

https://code.sololearn.com/cOrNOZfE8k8G/?ref=app

Answer 1

‎ ‏‏‎Anonymous Guy Alexander Thiem I want the class variables line 3,4

Answer 2

Class variable are referred using self and function arguments can be referred directly

Eg.

class A:
b= 0
def somefun(self, x):
print(self.b)
print (x)

Answer 3

so a and b in line 3,4 are defaults for self.a and self.b?

Answer 4

Variable within class are referred using self keyword. So instead of print(a) do print (self.a)

Answer 5

If you add print(self.a) at the very beginning of the _init_ you see that those are exactly the same

Answer 6

it works if you use self.a and self.b in _str_

Answer 7

Frogged you won't get output as 1.
When you create an object, constructor is called and it modifies value of both a and b to 2 and they are modifying the same variable declared at line 3, 4

Answer 8

Frogged Yes they seem to be defaults.
This can be seen through what I described in my previous comment....

Answer 9

Yo class variable and instance variables are same in this case.
His instance variable is modifying class variable on initialization.

Answer 10

Nikhil what you are doing is creating new instance of class without running constructor and using its variables.

Idk if it a correct approach

Answer 11

nihil let's not forget a=2 and b=2 is hard coded into constructor and there is no way to change them during initialization. So Calling them instance variable would be wrong. They are not unique to any instance

Answer 12

In that case, I think this implementation is wrong. Why modify class variables in constructor when there is a need to access class variable later on

Answer 13

you can use myClass.a to access those variables....

Answer 14

https://code.sololearn.com/cQ8dJ3cp5FFl/?ref=app

Answer 15

For the function the variable a is not defined ! And it's normal because you have to write "self.a" to bind it with the object attribute :)

Answer 16

Frogged
https://code.sololearn.com/c3MX0bD6CLih/?ref=app

try referring the class variables with self.<variable name>.

I edited ur code so check out my solution ☺