python字符串replace()方法 >>> help(str.replace)Help on method_descriptor:replace(...) S.replace(old, new[, count]) -> string Return a copy of string S with all occurrences of substring old replaced by new. If the optional argument cou
在mybatis中可能会用到的方法 1.模糊查询 <select id="showByIdName" parameterType="User" resultMap="resultmap"> SELECT r.*,u.id,u.age,u.`password`,u.username FROM role r LEFT JOIN user u ON r.role_id=u.role_id <where> <if test=
Linux下Python 文件替换脚本 import sys,os if len(sys.argv)<=4: old_text,new_text = sys.argv[1],sys.argv[2] file_name = sys.argv[3] f = open(file_name,"rb") new_file = open(".%s.bak" % file_name,"wb") for line in f.xreadlines(): pr
#!/usr/bin/env python r = "asada" ret = r.find("d") print(ret)#返回所在位置的索引 ret =r.split("d") print(ret)#分隔 ret = r.replace("sa","k") print(ret)#替换 结果C:\Python35\python3.exe F:/Python/笔记1/a1.py3['asa', 'a']ak