print(0 and 1 or 5) #5 and x and y x为假 取x x为真 取y or e or f e为假 取f e为真 取e print(1 and 1 or 5) #1 print(2 and 0 or 5) #5 print(0 and 0 or 1) #1 print(1 and 1 or 0) #1 print(3 and 0 or 0) #0 print(0 and 1 or 0) #0