Python urllib下载一个在线目录的内容 [英] Python urllib downloading contents of an online directory

问题描述

我正在尝试制作一个程序来打开一个目录，然后使用正则表达式获取powerpoint的名称，然后在本地创建文件并复制其内容。当我运行它，它似乎工作，但是，当我实际上尝试打开文件，他们说版本是错误的。

I'm trying to make a program that will open a directory, then use regular expressions to get the names of powerpoints and then create files locally and copy their content. When I run this it appears to work, however when I actually try to open the files they keep saying the version is wrong.

from urllib.request import urlopen
import re

urlpath = urlopen('http://www.divms.uiowa.edu/~jni/courses/ProgrammignInCobol/presentation/')
string = urlpath.read().decode('utf-8')

pattern = re.compile('ch[0-9]*.ppt') #the pattern actually creates duplicates in the list

filelist = pattern.findall(string)
print(filelist)

for filename in filelist:
    remotefile = urlopen('http://www.divms.uiowa.edu/~jni/courses/ProgrammignInCobol/presentation/' + filename)
    localfile = open(filename,'wb')
    localfile.write(remotefile.read())
    localfile.close()
    remotefile.close()

推荐答案

这段代码对我有用我只是修改了一点，因为你是复制每个ppt文件。从urllib2导入urlopen

This code worked for me. I just modified it a little because yours was duplicating each ppt file.

from urllib2 import urlopen
import re

urlpath =urlopen('http://www.divms.uiowa.edu/~jni/courses/ProgrammignInCobol/presentation/')
string = urlpath.read().decode('utf-8')

pattern = re.compile('ch[0-9]*.ppt"') #the pattern actually creates duplicates in the list

filelist = pattern.findall(string)
print(filelist)

for filename in filelist:
    filename=filename[:-1]
    remotefile = urlopen('http://www.divms.uiowa.edu/~jni/courses/ProgrammignInCobol/presentation/' + filename)
    localfile = open(filename,'wb')
    localfile.write(remotefile.read())
    localfile.close()
    remotefile.close()

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