题解 | #判断列表是否为空#

解法一：len()
my_list=[]
if len(my_list)==0:
    print('my_list is empty!')
else:
    print('my_list is not empty!')
解法二：两个变量==
my_list=[]
emptylist=[]
if my_list==emptylist:
    print('my_list is empty!')
else:
    print('my_list is not empty!')
解法三：用my_list=[]这个空列表作为标准
my_list=[]
if not my_list:
    print('my_list is empty!')
else:
    print('my_list is not empty!')