
python中判断一个列表是否为空,可以使用以下方法
1、is not None 判断
列表不为空
list_1 = []
if list_1 is not None:
    print('list is not none')列表为空
list_1 = []
if list_1[0] is None:
    print('list_1 is none')2.if 列表判断(更多学习内容,请点击Python学习网)
列表不为空(空列表等于 False)
list_2 = []
if list_2:
    print('list_2 is not none')3.length列表长度判断
列表为空
list_3 = []
if len(list_3) == 0:
    print('list_3 is none')list_3 = []
if len(list):
    print('list_3 is not none')









