# Empty class sample

class EmpltyClass:
    pass

# Sample var & Method declaration 
class FirstLevelSample:
    i=10
    print('This is firstLevelSample class')
    
f1 = FirstLevelSample()
f1.x=20
f1.y=30
print(f1.i)
print(f1.x, f1.y)

e = EmpltyClass()
e.a=100
e.b=200
print(e.a, e.b)