[python学习篇] [模块学习][os模块][2] 查看os属性

http://usyiyi.cn/documents/python_278/library/os.html

查看os的方法和属性（成员变量和方法的意思）

 

>>> os.__all__
['altsep', 'curdir', 'pardir', 'sep', 'extsep', 'pathsep', 'linesep', 'defpath', 'name', 'path', 'devnull', 'SEEK_SET', 'SEEK_CUR', 'SEEK_END', 'F_OK', 'O_APPEND', 'O_BINARY', 'O_CREAT', 'O_EXCL', 'O_NOINHERIT', 'O_RANDOM', 'O_RDONLY', 'O_RDWR', 'O_SEQUENTIAL', 'O_SHORT_LIVED', 'O_TEMPORARY', 'O_TEXT', 'O_TRUNC', 'O_WRONLY', 'P_DETACH', 'P_NOWAIT', 'P_NOWAITO', 'P_OVERLAY', 'P_WAIT', 'R_OK', 'TMP_MAX', 'W_OK', 'X_OK', 'abort', 'access', 'chdir', 'chmod', 'close', 'closerange', 'dup', 'dup2', 'environ', 'error', 'execv', 'execve', 'fdopen', 'fstat', 'fsync', 'getcwd', 'getcwdu', 'getpid', 'isatty', 'kill', 'listdir', 'lseek', 'lstat', 'mkdir', 'open', 'pipe', 'popen', 'popen2', 'popen3', 'popen4', 'putenv', 'read', 'remove', 'rename', 'rmdir', 'spawnv', 'spawnve', 'startfile', 'stat', 'stat_float_times', 'stat_result', 'statvfs_result', 'strerror', 'system', 'tempnam', 'times', 'tmpfile', 'tmpnam', 'umask', 'unlink', 'urandom', 'utime', 'waitpid', 'write', 'makedirs', 'removedirs', 'renames', 'walk', 'execl', 'execle', 'execlp', 'execlpe', 'execvp', 'execvpe', 'getenv', 'spawnv', 'spawnve', 'spawnl', 'spawnle']
>>> os.curdir
'.'
>>> os.linesep
'\r\n'

 

os.py开头的注释

nt: 操作系统为windows, posix对应操作系统为linux

r"""OS routines for NT or Posix depending on what system we're on.

This exports:
  - all functions from posix, nt, os2, or ce, e.g. unlink, stat, etc.
  - os.path is one of the modules posixpath, or ntpath
  - os.name is 'posix', 'nt', 'os2', 'ce' or 'riscos'
  - os.curdir is a string representing the current directory ('.' or ':')
  - os.pardir is a string representing the parent directory ('..' or '::')
  - os.sep is the (or a most common) pathname separator ('/' or ':' or '\\')
  - os.extsep is the extension separator ('.' or '/')
  - os.altsep is the alternate pathname separator (None or '/')
  - os.pathsep is the component separator used in $PATH etc
  - os.linesep is the line separator in text files ('\r' or '\n' or '\r\n')
  - os.defpath is the default search path for executables
  - os.devnull is the file path of the null device ('/dev/null', etc.)

Programs that import and use 'os' stand a better chance of being
portable between different platforms.  Of course, they must then
only use functions that are defined by all platforms (e.g., unlink
and opendir), and leave all pathname manipulation to os.path
(e.g., split and join).
"""