# 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)
