# sooele print('p' in 'python') #是否存在 print('k' not in 'python') #是否不存在 lst = [10,20,'python','hello'] print(10 in lst) print(100 in lst) print(10 not in lst) print(100 not in lst) for item in lst: print(item)
# sooele print('p' in 'python') #是否存在 print('k' not in 'python') #是否不存在 lst = [10,20,'python','hello'] print(10 in lst) print(100 in lst) print(10 not in lst) print(100 not in lst) for item in lst: print(item)