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import urllib.request            
urllib.request.urlretrieve('http://www.163.com','test.html') #ÄãÃÇÓÃË«ÒýºÅÊÔÏ£¬ÎÒÕâÔõôÓÐÎÊÌ⣿µ¥ÒýºÅºÍË«ÒýºÅÔÚÕâÀïÓÐÇø±ðô£¿
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import urllib
import urllib.request
url=urllib.request.urlopen("http://www.163.com")
file=open("test.html",'wb') #it's 'wb',not 'w'
while(1):
 line=url.readline()
 if len(line)==0:
  break
 file.write(line)
 
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filename=raw_input('enter file name:')
f=open(filename,'rb')
f.seek(0,0)
index=0
for i in range(0,16):
print "%3s" % hex(i) ,
print
for i in range(0,16):
print "%-3s" % "#" ,
print
while True:
temp=f.read(1)
if len(temp) == 0:
break
else:
print "%3s" % temp.encode('hex'),
......

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