as2.py

x="hello"
y=x
print (x)#Output:hello
print (y)#Output:hello

#Both x and y will point to same object in memory.
print (id(x))#Output:44758688
print (id(y))#Output:44758688

#modifying 'x' value.But 'y' value is not modified
x="python"
print (x)#Output:python
print(y)#Output:hello
#Both 'x' and 'y' now point to different object in memory.
print (id(x))#Output:44760320
print (id(y))#Output:44758688