zoukankan      html  css  js  c++  java
  • os.path.join()函数的用法

    转:https://blog.csdn.net/hduxiejun/article/details/80289476 

     

    os.path.join()函数:连接两个或更多的路径名组件

                             1.如果各组件名首字母不包含’/’,则函数会自动加上

             2.如果有一个组件是一个绝对路径,则在它之前的所有组件均会被舍弃

             3.如果最后一个组件为空,则生成的路径以一个’/’分隔符结尾

    Demo1

    import os

    Path1 = 'home'
    Path2 = 'develop'
    Path3 = 'code'

    Path10 = Path1 + Path2 + Path3
    Path20 = os.path.join(Path1,Path2,Path3)
    print ('Path10 = ',Path10)
    print ('Path20 = ',Path20)

    输出

    Path10 = homedevelopcode
    Path20 = homedevelopcode

    --------------------------------------------------------------

    Demo2

    import os

    Path1 = '/home'
    Path2 = 'develop'
    Path3 = 'code'

    Path10 = Path1 + Path2 + Path3
    Path20 = os.path.join(Path1,Path2,Path3)
    print ('Path10 = ',Path10)
    print ('Path20 = ',Path20) 
    输出

    Path10 = /homedevelopcode
    Path20 = /homedevelopcode

    --------------------------------------------------------------

    Demo3

    import os

    Path1 = 'home'
    Path2 = '/develop'
    Path3 = 'code'

    Path10 = Path1 + Path2 + Path3
    Path20 = os.path.join(Path1,Path2,Path3)
    print ('Path10 = ',Path10)
    print ('Path20 = ',Path20) 

    输出

    Path10 = home/developcode
    Path20 = /developcode

    --------------------------------------------------------------

    Demo4

    import os

    Path1 = 'home'
    Path2 = 'develop'
    Path3 = '/code'

    Path10 = Path1 + Path2 + Path3
    Path20 = os.path.join(Path1,Path2,Path3)
    print ('Path10 = ',Path10)
    print ('Path20 = ',Path20 )

    输出

    Path10 = homedevelop/code
    Path20 = /code

  • 相关阅读:
    RAC RMAN 备份 RMAN03009 ORA19504 ORA27040 RMAN06012 channel c3 not allocated 错误分析
    Oracle 发送邮件 存储过程 代码
    RAC 之 RMAN 备份
    Oracle 一次小优化
    RAC 实例不能启动
    Oracle Hint
    RAC 之 RMAN 备份
    远程客户端 访问 ASM 实例
    RAC RMAN 备份 RMAN03009 ORA19504 ORA27040 RMAN06012 channel c3 not allocated 错误分析
    RAC the cluster database(DB_NAME) already exits
  • 原文地址:https://www.cnblogs.com/tangjunjun/p/11816042.html
Copyright © 2011-2022 走看看