Python列表元素的判断and遍历

# 判定指定元素在列表中是否存在
print('p' in 'python')
print('p' not in 'python')

lst = [10, 20, 'python', 'hello']
print(10 in lst)
print(10 not in lst)
print(100 in lst)
print(100 not in lst)

#列表元素的遍历
for item in lst:
    print(item)