Python Basic Learning OS module and SYS module

OS module and SYS module
Import OS
OS.GETCWD () #获取当前工作目录
Os.chdir () #切换目录
Os.makedirs () #递归创建一个目录
Os.removedirs () #递归删除一个目录 (if the directory is empty, it is deleted and recursively to the previous directory, if it is empty and then deleted, recursively to the previous level)
Os.mkdir () #不递归创建目录
Os.rmdir () #不递归删除目录
Os.listdir () #查看指定目录下的所有文件和目录
Os.remove () #删除一个文件
Os.rename (Oldname,newname) #重命名文件或目录
Os.stat () #获取一个文件或目录的信息

System-related
Os.sep #输出当前操作系统特定的路径分隔符 (window: \ \ linux/)
OS.LINSEP output line break for the current operating system (Windows is \ r \ n linux \ n)
OS.PATHSEP outputs the specific delimiter used by the current system to separate the path of the environment variable (Windows is; Linux as:)
Os.environ output The current system's environment variables
Os.name Output Current system name
Os.system () Execute system command

PATH
Os.path.abspath (PATH) # Gets the absolute path of a file
Os.path.split (path) #分割文件的路径, returns a tuple, the first part is a path, and the second part is a file name
Os.path.dirname (PATH) #返回path的目录路径
Os.path.basename (PAHT) #返回Path的文件名
Os.path.join (path1,path2) #将多个路径组合后返回, automatically using system-specified path separators in the middle of the path
Os.path.getatime (PATH) #返回文件或目录的最后读取时间
Os.path.getmtime (PATH) #返回文件或目录的最后修改时间

Judge
Os.path.exists (PATH) #判断路径是否存在
Os.isabs (PATH) #判断路径是否是绝对路径
Os.isfilke (PATH) #判断文件是否存在
Os.isdir (PATH) #判断目录是否存在

Import Sys
Sys.path #返回模块的搜索路径
SYS.ARGV #获取文件传递的参数, the first one is the file name
Sys.exit (n) #退出程序
Sys.version #获取当前python解释器的版本
Sys.platform returns the operating system platform name
Sys.stdin #重定向输入
Sys.stdout #重定向输出
Sys.stderr #重定向错误

Python Basic Learning OS module and SYS module