Python 中的幾種copy用法

不知道在什麼時候看到個好帖，覺得好就移過來了，學習學習。。。

1. os.system

Python code

import osimport tempfilefilename1 = tempfile.mktemp (".txt") #產生臨時檔案或目錄，tempfile.mktemp(suffix='',prefix='tmp'，dir=None)                                      產生的檔案名稱或目錄，預設就是函數裡的參數。  

open (filename1, "w").close ()filename2 = filename1 + ".copy"print filename1, "=>", filename2#拷檔案os.system ("copy %s %s" % (filename1, filename2))if os.path.isfile (filename2): print "Success"dirname1 = tempfile.mktemp (".dir")os.mkdir (dirname1)dirname2 = dirname1 + ".copy"print dirname1, "=>", dirname2#拷目錄os.system ("xcopy /s %s %s" % (dirname1, dirname2)) #DOS下，拷貝目錄命令xcopyif os.path.isdir (dirname2): print "Success"

2. shutil.copy和shutil.copytree

Python code

import osimport shutilimport tempfilefilename1 = tempfile.mktemp (".txt")open (filename1, "w").close ()filename2 = filename1 + ".copy"print filename1, "=>", filename2#拷檔案shutil.copy (filename1, filename2)if os.path.isfile (filename2): print "Success"dirname1 = tempfile.mktemp (".dir")os.mkdir (dirname1)dirname2 = dirname1 + ".copy"print dirname1, "=>", dirname2#拷目錄shutil.copytree (dirname1, dirname2)if os.path.isdir (dirname2): print "Success"

3. win32file.CopyFile

Python code

import osimport win32fileimport tempfilefilename1 = tempfile.mktemp (".txt")open (filename1, "w").close ()filename2 = filename1 + ".copy"print filename1, "=>", filename2#拷檔案#檔案已存在時，1為不覆蓋，0為覆蓋win32file.CopyFile (filename1, filename2, 1)win32file.CopyFile (filename1, filename2, 0)win32file.CopyFile (filename1, filename2, 1)if os.path.isfile (filename2): print "Success"dirname1 = tempfile.mktemp (".dir")os.mkdir (dirname1)dirname2 = dirname1 + ".copy"print dirname1, "=>", dirname2#拷目錄win32file.CopyFile (dirname1, dirname2, 1)if os.path.isdir (dirname2): print "Success"

4. SHFileOperation

Python code

import osfrom win32com.shell import shell, shellconimport tempfilefilename1 = tempfile.mktemp (".txt")open (filename1, "w").close ()filename2 = filename1 + ".copy"print filename1, "=>", filename2#拷檔案#檔案已存在時，shellcon.FOF_RENAMEONCOLLISION會指示重新命名檔案shell.SHFileOperation (  (0, shellcon.FO_COPY, filename1, filename2, 0, None, None))shell.SHFileOperation (  (0, shellcon.FO_COPY, filename1, filename2, shellcon.FOF_RENAMEONCOLLISION, None, None))shell.SHFileOperation (  (0, shellcon.FO_COPY, filename1, filename2, 0, None, None))if os.path.isfile (filename2): print "Success"dirname1 = tempfile.mktemp (".dir")os.mkdir (dirname1)dirname2 = dirname1 + ".copy"print dirname1, "=>", dirname2#拷目錄shell.SHFileOperation (  (0, shellcon.FO_COPY, dirname1, dirname2, 0, None, None))if os.path.isdir (dirname2): print "Success"

測試結果出來了：
測試環境：系統——Win7 RTM，CPU——P4 3.0，MEM——1.5G DDR400，隨身碟——Kingston 4G

用4種不同的方法從硬碟拷貝MSDN 2008 SP1（2.37G）到隨身碟：

os System 的方法耗時903.218秒
shutil 的方法耗時1850.634秒
win32file 的方法耗時861.438秒
SHFileOperation的方法耗時794.023秒

另外SHFileOperation是顯示對話方塊的，可以這樣用 
SHFileOperation能操作網路上的檔案
如果你想將本地檔案複製到192.168.1.99
那麼只要在192.168.1.99上共用123目錄
然後將pTo設定為http://www.cnblogs.com/lovemo1314/admin/file://192.168.1.99/123
就可以了
但不要設定為http://www.cnblogs.com/lovemo1314/admin/file://192.168.1.99/

Python code

shell.SHFileOperation ( 

(0, shellcon.FO_COPY, filename1, filename2, 

shellcon.FOF_RENAMEONCOLLISION | 

\ shellcon.FOF_NOCONFIRMATION |\ 

shellcon.FOF_NOERRORUI | \ 

shellcon.FOF_SILENT, None, None))

FOF_SILENT  //不產生正在複製的對話方塊
FOF_NOCONFIRMMKDIR//如果目的目錄不存在，就預設建立
FOF_NOCONFIRMATION //不出現確認檔案替換對話方塊(Confirmation Dialog)(預設替換原來的文i件)
FOF_NOERRORUI//不出現錯誤對話方塊
最好不要同時使用FOF_NOERRORUI,FOF_NOCONFIRMMKDIR,因為FOF_NOCONFIRMMKDIR屏蔽了missing directory Error
但FOF_NOERROR又屏蔽了missing directory Error,那麼在同時使用FOF_NOERRORUI,FOF_NOCONFIRMMKDIR