重生都市邪神,中国体育教师网,兽魔狐仙
>>> import os 导入模块
>>> os.listdir("d:\\python25") 列出所有目录和文件
['w9xpopen.exe', 'readme.txt', 'news.txt', 'license.txt', 'python.exe', 'pythonw.exe', 'lib', 'dlls', 'include', 'libs', 'tcl', 'tools', 'doc', 'odbchelper.py', 'odbchelper.pyc', 'test.log', 'sqlconnection.py', 'sqlconnection.pyc']
>>> dirname="d:\\python25" 支持自定义
>>> os.listdir(dirname)
['w9xpopen.exe', 'readme.txt', 'news.txt', 'license.txt', 'python.exe', 'pythonw.exe', 'lib', 'dlls', 'include', 'libs', 'tcl', 'tools', 'doc', 'odbchelper.py', 'odbchelper.pyc', 'test.log', 'sqlconnection.py', 'sqlconnection.pyc']
>>> [f for f in os.listdir(dirname) 筛选出一个list，存放filename
if os.path.isfile(os.path.join(dirname, f))]
['w9xpopen.exe', 'readme.txt', 'news.txt', 'license.txt', 'python.exe', 'pythonw.exe', 'odbchelper.py', 'odbchelper.pyc', 'test.log', 'sqlconnection.py', 'sqlconnection.pyc']
>>> [f for f in os.listdir(dirname) 筛选出一个list，存放dirname
if os.path.isdir(os.path.join(dirname, f))]
['lib', 'dlls', 'include', 'libs', 'tcl', 'tools', 'doc']
判别的应用
>>> os.path.isdir("d:\\")
true
>>> os.path.isdir("d:\\python25\\odbchelper.py")
false
>>> os.path.isfile("d:\\python25\\odbchelper.py")
true
当前目录
>>> os.getcwd()
'd:\\python25'
通配符的使用，引入glob
idle 1.2.1
>>> import glob
>>> glob.glob('d:\\python25\\*.exe')
['d:\\python25\\w9xpopen.exe', 'd:\\python25\\python.exe', 'd:\\python25\\pythonw.exe']
>>> glob.glob('d:\\python25\\py*.exe')
['d:\\python25\\python.exe', 'd:\\python25\\pythonw.exe']
>>>
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