strip()去除字符串两边的指定字符（默认去除的是空格）

案例学习：

str1="today is a nice day"str2="***today is a nice day***"# print(str1)# print(str1.strip())# print(str2)# print(str2.strip("*"))# lstrip() 只去除字符串左边的指定字符# print（str2.lstrip("*")）# rstrip() 只去除字符串右边的指定中字符# print（str2.rstrip("*")）# 字符串的分割和合并# split() 以指定字符对字符串进行分割（默认是空格）str3="this is a string example...."print（str3.split()） #['this','is','a','string','example....']# print(str3.split("i")) #['th','s a str','ng example....']# join() 合并字符串str4 = "-"tup = ("hello","every","body")print(tup)print(str4.join(tup))

输出结果如下：

  today is a nice daytoday is a nice day***today is a nice day***today is a nice day******today is a nice day['this','is','a','string','example....']['th','s','s a str','ng example....']('hello','every','body')