>>> 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:python25odbchelper.py")
False
>>> os.path.isfile("D:python25odbchelper.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:python25w9xpopen.exe', 'D:python25python.exe', 'D:python25pythonw.exe']
>>> glob.glob('D:python25py*.exe')
['D:python25python.exe', 'D:python25pythonw.exe']
>>>
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