Class variables not callable?

I’ve stumbled on what is probably a simple issue but I struggle to think of a solution. If I try to make a class variable that equates to a number or an array index they come up with these errors

'int' object is not callable

and

'numpy.ndarray' object is not callable

---

class Do_something:
   def __init__(self,number = 0):
      self.number = number
      self.result = 1 + self.number

something = Do_something()
print(something.result(1))

---

import numpy as np

class Do_something_else:

   def __init__(sel):
      self.arr = np.zeros([5,5])
      self.index = self.arr[0]

something = Do_something_else()
print(something.index())

This seems odd since I can set variables equal to ints and arrays elsewhere. What am I missing and what is the solution?

Answer

In both piece of code result and index are not methods, they are instance valiables. To make this code work it should look like this:

class Do_something:
   def __init__(self,number = 0):
      self.number = number
      self.result = 1 + self.number

something = Do_something(1)
print(something.result)

and

class Do_something_else:

   def __init__(self):
      self.arr = np.zeros([5,5])
      self.index = self.arr[0]

something = Do_something_else()
print(something.index)

Also pay attention that there ia s misspelling in def __init__(sel): line in Do_something_else class. It should be def __init__(self):