Python 中的几种copy用法

不知道在什么时候看到个好帖，觉得好就移过来了，学习学习。。。

1. os.system

Python code

   

    
    import
     os 
    import
     tempfile filename1 
    =
     tempfile.mktemp (
    "
    .txt
    "
    ) #产生临时文件或目录，tempfile.mktemp(suffix='',prefix='tmp'，dir=None) 产生的文件名或目录，默认就是函数里的参数。 
   

   

    open (filename1, 
    "
    w
    "
    ).close () filename2 
    =
     filename1 
    +
     
    "
    .copy
    "
     
    print
     filename1, 
    "
    =>
    "
    , filename2 
    #
    拷文件
     
    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 
    #
    拷目录
     
    os.system (
    "
    xcopy /s %s %s
    "
     
    %
     (dirname1, dirname2)) #DOS下，拷贝目录命令xcopy 
    if
     os.path.isdir (dirname2): 
    print
     
    "
    Success
    "
   

   

    2. shutil.copy和shutil.copytree
   

Python code

   

    
    import
     os 
    import
     shutil 
    import
     tempfile filename1 
    =
     tempfile.mktemp (
    "
    .txt
    "
    ) open (filename1, 
    "
    w
    "
    ).close () filename2 
    =
     filename1 
    +
     
    "
    .copy
    "
     
    print
     filename1, 
    "
    =>
    "
    , filename2 
    #
    拷文件
     
    shutil.copy (filename1, filename2) 
    if
     os.path.isfile (filename2): 
    print
     
    "
    Success
    "
     dirname1 
    =
     tempfile.mktemp (
    "
    .dir
    "
    ) os.mkdir (dirname1) dirname2 
    =
     dirname1 
    +
     
    "
    .copy
    "
     
    print
     dirname1, 
    "
    =>
    "
    , dirname2 
    #
    拷目录
     
    shutil.copytree (dirname1, dirname2) 
    if
     os.path.isdir (dirname2): 
    print
     
    "
    Success
    "
     
   

3. win32file.CopyFile

Python code

   

    
    import
     os 
    import
     win32file 
    import
     tempfile filename1 
    =
     tempfile.mktemp (
    "
    .txt
    "
    ) open (filename1, 
    "
    w
    "
    ).close () filename2 
    =
     filename1 
    +
     
    "
    .copy
    "
     
    print
     filename1, 
    "
    =>
    "
    , filename2 
    #
    拷文件
     #
    文件已存在时，1为不覆盖，0为覆盖
     
    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 
    #
    拷目录
     
    win32file.CopyFile (dirname1, dirname2, 
    1
    ) 
    if
     os.path.isdir (dirname2): 
    print
     
    "
    Success
    "
     
   

   

    
4. SHFileOperation
    

   

Python code

   

    
    import
     os 
    from
     win32com.shell 
    import
     shell, shellcon 
    import
     tempfile filename1 
    =
     tempfile.mktemp (
    "
    .txt
    "
    ) open (filename1, 
    "
    w
    "
    ).close () filename2 
    =
     filename1 
    +
     
    "
    .copy
    "
     
    print
     filename1, 
    "
    =>
    "
    , filename2 
    #
    拷文件
     #
    文件已存在时，shellcon.FOF_RENAMEONCOLLISION会指示重命名文件
     
    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 
    #
    拷目录
     
    shell.SHFileOperation ( (0, shellcon.FO_COPY, dirname1, dirname2, 0, None, None) ) 
    if
     os.path.isdir (dirname2): 
    print
     
    "
    Success
    "
   

 

  测试结果出来了：
测试环境：系统——Win7 RTM，CPU——P4 3.0，MEM——1.5G DDR400，U盘——Kingston 4G

用4种不同的方法从硬盘拷贝MSDN 2008 SP1（2.37G）到U盘：

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

另外SHFileOperation是显示对话框的，可以这样用
 
 

   
SHFileOperation能操作网络上的文件
如果你想将本地文件复制到192.168.1.99
那么只要在192.168.1.99上共享123目录
然后将pTo设置为http://www.cnblogs.com/lovemo1314/admin/file://192.168.1.99/123
就可以了
但不要设置为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  //不产生正在复制的对话框
FOF_NOCONFIRMMKDIR//如果目的目录不存在，就默认创建
FOF_NOCONFIRMATION //不出现确认文件替换对话框(Confirmation Dialog)(默认替换原来的文i件)
FOF_NOERRORUI//不出现错误对话框
最好不要同时使用FOF_NOERRORUI,FOF_NOCONFIRMMKDIR,因为FOF_NOCONFIRMMKDIR屏蔽了missing directory Error
但FOF_NOERROR又屏蔽了missing directory Error,那么在同时使用FOF_NOERRORUI,FOF_NOCONFIRMMKDIR