在python中 None, False, 空字符串"", 0, 空列表[], 空字典{}, 空元组()都相当于False ，即：
not None == not False == not '' == not 0 == not [] == not {} == not ()
not = !标签：None,False,python,元组,用法,字典 From： https://www.cnblogs.com/bile/p/16941292.html
在python中 None, False, 空字符串"", 0, 空列表[], 空字典{}, 空元组()都相当于False ，即：
not None == not False == not '' == not 0 == not [] == not {} == not ()
not = !标签：None,False,python,元组,用法,字典 From： https://www.cnblogs.com/bile/p/16941292.html