1.创建一个henan的空列表，添加zhengzhou，kaifeng，shangqiu，jiaozuo，xinyang元素；
henan = []
henan.extend(['zhengzhou','kaifeng','shangqiu','jiaozuo','xinyang'])
print(henan)
['zhengzhou', 'kaifeng', 'shangqiu', 'jiaozuo', 'xinyang']2.在kaifeng元素前面插入一个luoyang元素；
henan.insert(1,'luoyang')
print(henan)
['zhengzhou', 'luoyang', 'kaifeng', 'shangqiu', 'jiaozuo', 'xinyang']3.把元素xinyang改成中文信阳；
henan[-1] = '信阳'
print(henan)
['zhengzhou', 'luoyang', 'kaifeng', 'shangqiu', 'jiaozuo', '信阳']4.在元素jiaozuo后面插入一个子列表[hebi,xuchang]；
list = ['hebi','xuchang']
henan.insert(-1,list)
print(henan)
['zhengzhou', 'luoyang', 'kaifeng', 'shangqiu', 'jiaozuo', ['hebi', 'xuchang'], '信阳']5.打印元素shangqiu的索引值；
print('shangqiu的索引值:',henan.index('shangqiu'))
shangqiu的索引值: 36.创建新列表[1,2,3,4,5,6,2]，与henan列表合并；
number = [1,2,3,4,5,6,2]
henan.extend(number)
print(henan)
['zhengzhou', 'luoyang', 'kaifeng', 'shangqiu', 'jiaozuo', ['hebi', 'xuchang'], '信阳', 1, 2, 3, 4, 5, 6, 2]
