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--- python:ospackage [2015/10/08 09:14] – [os.path custom examples] admin
+++ python:ospackage [2015/10/24 02:21] (current) – removed admin
@@ Line 1: / Line 1: @@
-====== os package for file and directory ======
-===== os package =====
-  * Executing a shell command<code python>
-os.system()</code>
-  * Get the users environment <code python>
-os.environ()</code>
-  * Returns the current working directory<code python>
-os.getcwd()</code>
-  * Return a list of the entries in the directory given by path<code python>
-os.listdir(path)</code>
-  * Create a directory named path with numeric mode mode<code python>
-os.mkdir(path)</code>
-  * Recursive directory creation function<code python>
-os.makedirs(path)</code>
-  * Remove (delete) the file path<code python>
-os.remove(path)</code>
-  * Remove directories recursively<code python>
-os.removedirs(path)</code>
-  * Rename the file or directory src to dst<code python>
-os.rename(src, dst)</code>
-  * Remove (delete) the directory path<code python>
-os.rmdir(path)</code>
-===== os.path =====
-==== os.path basic functions ====
-  * split:<code python>
-import os
-from urlparse import urlparse
-filename = "E:\\do-choi\\do-choi-giay\\the-hinh-chu-so-vua-hoc-vua-choi.html"
-print "full filename", filename
-print "using", os.name, "..."
-print "split", "=>", os.path.split(filename)
-print "splitdrive", "=>", os.path.splitdrive(filename)
-print "splitext", "=>",os.path.splitext(filename)
-print "splitunc", "=>",os.path.splitunc(filename)
-</code>output:<code>
-full filename E:\do-choi\do-choi-giay\the-hinh-chu-so-vua-hoc-vua-choi.html
-using nt ...
-split => ('E:\\do-choi\\do-choi-giay', 'the-hinh-chu-so-vua-hoc-vua-choi.html')
-splitdrive => ('E:', '\\do-choi\\do-choi-giay\\the-hinh-chu-so-vua-hoc-vua-choi.html')
-splitext => ('E:\\do-choi\\do-choi-giay\\the-hinh-chu-so-vua-hoc-vua-choi', '.html')
-splitunc => ('', 'E:\\do-choi\\do-choi-giay\\the-hinh-chu-so-vua-hoc-vua-choi.html')
-</code>
-  * using os.path to check what a filename represents<code python>
-import os
-FILES = (
-    os.curdir,
-    "/",
-    "file",
-    "/file",
-    "samples",
-    "samples/sample.jpg",
-    "directory/file",
-    "../directory/file",
-    "/directory/file"
-    )
-for file in FILES:
-    print file, "=>",
-    if os.path.exists(file):
-        print "EXISTS",
-    if os.path.isabs(file):
-        print "ISABS",
-    if os.path.isdir(file):
-        print "ISDIR",
-    if os.path.isfile(file):
-        print "ISFILE",
-    if os.path.islink(file):
-        print "ISLINK",
-    if os.path.ismount(file):
-        print "ISMOUNT",
-    print
-</code>output:<code>
-. => EXISTS ISDIR
-/ => EXISTS ISABS ISDIR ISMOUNT
-file =>
-/file => ISABS
-samples => EXISTS ISDIR
-samples/sample.jpg => EXISTS ISFILE
-directory/file =>
-../directory/file =>
-/directory/file => ISABS
-</code>
-==== os.path custom examples ====
-  * Using os.path to handle filename<code python>
-import os
-import re
-filename = "my/little/pony.txt"
-print "using", os.name, "..."
-print "split", "=>", os.path.split(filename)
-print "splitext", "=>", os.path.splitext(filename)
-print "dirname", "=>", os.path.dirname(filename)
-print "basename", "=>", os.path.basename(filename)
-print "join", "=>", os.path.join(os.path.dirname(filename),
-                                 os.path.basename(filename))
-print "realpath", os.path.realpath(filename)
-print "abspath", os.path.abspath(filename)
-print "rename filename to ", re.sub(r'\.txt', '', filename) + '.html'</code> => output<code>
-using nt ...
-split => ('my/little', 'pony.txt')
-splitext => ('my/little/pony', '.txt')
-dirname => my/little
-basename => pony.txt
-join => my/little\pony.txt
-realpath E:\backup\GoogleDrive\projects\python\my\little\pony.txt
-abspath E:\backup\GoogleDrive\projects\python\my\little\pony.txt
-rename filename to  my/little/pony.html
-</code>
-  * get normal path<code python>
-import os
-filename = "E:\\do-choi\\do-choi-giay\\the-hinh-chu-so-vua-hoc-vua-choi.html"
-print "full filename", filename
-print "basename", os.path.basename(filename)
-print "dirname", os.path.dirname(filename)
-print "splitdrive", "=>", os.path.splitdrive(filename)
-fullpathname = os.path.dirname(filename)
-pathname = os.path.splitdrive(fullpathname)[1]
-print "pathname = ", pathname
-normalpath = pathname[1:]
-print "normalpath = ", normalpath
-</code>output:<code>
-full filename E:\do-choi\do-choi-giay\the-hinh-chu-so-vua-hoc-vua-choi.html
-basename the-hinh-chu-so-vua-hoc-vua-choi.html
-dirname E:\do-choi\do-choi-giay
-splitdrive => ('E:', '\\do-choi\\do-choi-giay\\the-hinh-chu-so-vua-hoc-vua-choi.html')
-pathname =  \do-choi\do-choi-giay
-normalpath =  do-choi\do-choi-giay
-</code>
-  * urlparse<code python>
-import os
-from urlparse import urlparse
-url = "http://shop.babies.vn/do-choi/do-choi-giay/the-hinh-chu-so-vua-hoc-vua-choi.html"
-o = urlparse(url)
-print o
-filename = o.path
-print filename
-print "split", "=>", os.path.split(filename)
-print "splitext", "=>", os.path.splitext(filename)
-print "dirname", "=>", os.path.dirname(filename)
-print "basename", "=>", os.path.basename(filename)
-print "join", "=>", os.path.join(os.path.dirname(filename),
-                                 os.path.basename(filename))
-print "realpath", os.path.realpath(filename)
-print "abspath", os.path.abspath(filename)
-</code>output:<code>
-ParseResult(scheme='http', netloc='shop.babies.vn', path='/do-choi/do-choi-giay/the-hinh-chu-so-vua-hoc-vua-choi.html', params='', query='', fragment='')
-/do-choi/do-choi-giay/the-hinh-chu-so-vua-hoc-vua-choi.html
-split => ('/do-choi/do-choi-giay', 'the-hinh-chu-so-vua-hoc-vua-choi.html')
-splitext => ('/do-choi/do-choi-giay/the-hinh-chu-so-vua-hoc-vua-choi', '.html')
-dirname => /do-choi/do-choi-giay
-basename => the-hinh-chu-so-vua-hoc-vua-choi.html
-join => /do-choi/do-choi-giay\the-hinh-chu-so-vua-hoc-vua-choi.html
-realpath E:\do-choi\do-choi-giay\the-hinh-chu-so-vua-hoc-vua-choi.html
-abspath E:\do-choi\do-choi-giay\the-hinh-chu-so-vua-hoc-vua-choi.html
-</code>
-==== Get all files and directories in current directory ====
-  * using os.path.walk list all file in current directory and all subdirectories<code python>
-import os
-def gotodir(arg, directory, files):
-    for file in files:
-        print file
-os.path.walk(".", gotodir, "")
-</code>Output<code>
-.project
-.pydevproject
-conent.tpl
-index.html
-parser.py
-test.py
-</code>
-  * using os.path.walk list all full filename in current directory and all subdirectories<code python>
-import os
-def gotodir(arg, directory, files):
-    for file in files:
-        fullfilename = os.path.join(directory,file)
-        print fullfilename
-os.path.walk(".", gotodir, "")
-</code>
-  * Find all files with extension ".py":<code python>
-import os
-def gotodir(arg, directory, files):
-    for file in files:
-        extName = os.path.splitext(file)[1];
-        if extName == '.py':
-            fullfilename = os.path.join(directory,file)
-            print fullfilename
-os.path.walk(".", gotodir, "")
-</code>