1 f = lambda x: (x, 1) 2 3 class C: 4 f = lambda x: (x, 2) 5 6 print f(123) # (123, 1) 7 8 c = C() 9 print c.f # __main__.C.$l0 10 print c.f(123) # (123, 2) 11 12 c.f = f 13 print c.f(123) # (123, 1) 14 15 C.f = f 16 c2 = C() 17 print c2.f(123) # (123, 1)