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1. os.system
Python code:
import os
import tempfile

filename1 = tempfile.mktemp (".txt")
open (filename1, "w").close ()
filename2 = filename1 + ".copy"
print filename1, "=>", filename2

#¿½Îļþ
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

#¿½Ä¿Â¼
os.system ("xcopy /s %s %s" % (dirname1, dirname2))

if os.path.isdir (dirname2): print "Success"



2. shutil.copyºÍshutil.copytree
Python code:
import os
import shutil
import tempfile

filename1 = tempfile.mktemp (".txt")
open (filename1, "w").close ()
filename2 = filename1 + ".copy"
print filename1, "=>", filename2

#¿½Îļþ
shutil.copy (filename1, filename2)

if os.path.isfile (filename2): print "Success"

dirname1 = tempfile.mktemp (".dir")
os.mkdir (dirname1)
dirname2 = dirname1 + ".copy"
print dirname1, "=>", dirname2

#¿½Ä¿Â¼
shutil.copytree (dirname1, dirname2)


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http://blog.csdn.net/lgg201/archive/2009/10/08/4643635.aspx

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Python code:

#!/usr/bin/python2.5
from urllib2 import Request,urlopen,URLError
def check():
req = Request('http://www.google.com')
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@orm.validates('title')
def validate_title(self, key, title):
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