class A: pass class B: pass a = A() assert type(a) is A x = 0 if x==0: x=1 assert x==1 def f(x, y): return x+y assert f(1,2)==3 c = 1 if c==0: x=1 elif c==1: x=2 else: x=3 assert x==2 def f1(x): return x+1 assert f1(1)==2
