字符串与list一样可遍历、索引、切片、连接
但不能通过索引更改字符
# -*- coding: utf-8 -*-
"""
Created on Sun Feb 11 13:33:59 2018
@author: myself
"""
word = "helloworld"
for i in (word): #字符串的遍历
print(i)
print(word[1]) #字符串的索引访问
print(word[-1])
print(word[0:2]) #字符串的切片
newWord = ",".join(word) #连接字符
print(newWord)
#错误：word[0] = "i"
#字符串不能通过索引更改字符
# -*- co
