Head First Python （二）

if...else...

 1 movies = ["The Holy Grail",1975,"Terry Jones & Terry Gilliam",91,  2 ["Graham Chapman",["Michael Palin","John Cleese",  3 "Terry Gilliam","Eric Idle","Terry Jones"]]]  4  5 for i in movies:  6 if isinstance(i,list):  7 for mov in i:  8 if isinstance(mov,list):  9 for mv in mov: 10 print (mv) 11 else: 12 print (mov) 13 else: 14 print (i)