Answer to Question #282088 in Python for kika

Question

Describe the relationship between objects, references, and aliasing. Again, create your own examples with Python lists

Answer 1

Objects are instances of a class. For example a=[1,2,3], a is the object.

a=[1,2,3]

b=a

print(a is b)

In the above case b is a reference to the object a.

Since the same list above have two different names, a and b are said to be aliased.

Example

x = [1,2,3]
y = [1,2,3]
print(x == y)
print(x is y)
y = x
print(x == y)
print(x is y)
y[0] = 7 
print(x)