py中的目录与文件判别代码
(编辑:jimmy 日期: 2024/11/17 浏览:3 次 )
> 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']
>
> 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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