Can anyone tell me why I didn't get the expected output?

Question

class Pets:
def __init__(self, name, type):
self. name= name
self. type= type
def sound(self):
if type =="Dog":
print ("Bow Bow")
else:
print ("Meao")
pet= Pets("Jimmy", "Dog")
pet_1= Pets ("Pussy", "Cat")
print (pet. name)
print (pet. type)
pet.sound()

Answer 1

It should be self.type=="Dog" if that's what you want or were expecting

Answer 2

What was your expected output?

Answer 3

This code is interesting to me because it doesn't throw error as I expected:
Your sound function will always print "meao".
"type" here is not the "type" property of your instance but a built-in class of the language named "type". That class will never equal a string, that's why meao is printed.

As Abhay said you need to use self.type because you are checking a property that belongs to your pet instance. Without "self" your code tries to find something named "type" (and succeeds) in outer scopes.