x=1 def a(): print("Hello a") a() # case 1 import module as label import dio as d d.a() print (x,d.x,d._x) # case 2 from module import * from dio import * a() print (x, x_y) from tria import * a() print (x) # case from module import selected items from tria import a, _x a() print (_x) from math import pi,sqrt print(pi,sqrt(9089809))