【转】Windows下用Python你会几种copy文件的方法？

qns_fengyusong

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　　ref http://topic.iyunv.com/u/20090912/10/c13937be-0f4a-4aca-9cbb-cb6b41128f11.html
http://timgolden.me.uk/python/win32_how_do_i/copy-a-file.html
1. os.system



import os
import tempfile
filename1 = tempfile.mktemp (".txt")
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))
if os.path.isdir (dirname2): print "Success"
　　2. shutil.copy和shutil.copytree



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



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




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"


不知道有没有其它的了，os.rename不算，那个是移动文件。另外我在测试它们的性能如何。http://timgolden.me.uk/python/win32_how_do_i/copy-a-file.html
这里和楼主列出的都一样，没有更多的了
或者使用Chilkat  http://www.chilkatsoft.com/refdoc/pythonCkFileAccessRef.html
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


shell.SHFileOperation (
  (0, shellcon.FO_COPY, filename1, filename2,
   shellcon.FOF_RENAMEONCOLLISION | \
   shellcon.FOF_NOCONFIRMATION |\
   shellcon.FOF_NOERRORUI | \
   shellcon.FOF_SILENT, None, None)
)