一、
>>> test1 = ["ccc","ddd","mmm"] >>> if test1: for i in test1: print(i) else: print("empty list") ccc ddd mmm >>> test1 = [] >>> if test1: for i in test1: print(i) else: print("empty list") empty list
二、
>>> test1 = ["ccc","eee","kkk"] >>> lenlist=len(test1) >>> if lenlist != 0: for i in test1: print(i) else: print("empty list") ccc eee kkk >>> test1 = [] >>> lenlist=len(test1) >>> if lenlist != 0: for i in test1: print(i) else: print("empty list") empty list