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--- python:ospackage [2014/07/07 12:44] – created 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 =====
-  * 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>
-  * 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>
-  * 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>