我想执行在python网站上找到的以下代码：
#!/usr/bin/python
import urllib2
f = urllib2.urlopen('http://www.python.org/')
print f.read(100)
但是结果是这样的：
Traceback (most recent call last):
File "WebServiceAusführen.py", line 5, in <module>
f = urllib2.urlopen('http://www.python.org/')
File "/usr/lib/python2.7/urllib2.py", line 126, in urlopen
return _opener.open(url, data, timeout)
File "/usr/lib/python2.7/urllib2.py", line 400, in open
response = self._open(req, data)
File "/usr/lib/python2.7/urllib2.py", line 418, in _open
'_open', req)
File "/usr/lib/python2.7/urllib2.py", line 378, in _call_chain
result = func(*args)
File "/usr/lib/python2.7/urllib2.py", line 1207, in http_open
return self.do_open(httplib.HTTPConnection, req)
File "/usr/lib/python2.7/urllib2.py", line 1146, in do_open
h = http_class(host, timeout=req.timeout) # will parse host:port
File "/usr/lib/python2.7/httplib.py", line 693, in __init__
self._set_hostport(host, port)
File "/usr/lib/python2.7/httplib.py", line 721, in _set_hostport
raise InvalidURL("nonnumeric port: '%s'" % host[i+1:])
httplib.InvalidURL: nonnumeric port: 'port/'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 70, in apport_excepthook
binary = os.path.realpath(os.path.join(os.getcwdu(), sys.argv[0]))
File "/usr/lib/python2.7/posixpath.py", line 71, in join
path += '/' + b
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 15: ordinal not in range(128)
Original exception was:
Traceback (most recent call last):
File "WebServiceAusführen.py", line 5, in <module>
f = urllib2.urlopen('http://www.python.org/')
File "/usr/lib/python2.7/urllib2.py", line 126, in urlopen
return _opener.open(url, data, timeout)
File "/usr/lib/python2.7/urllib2.py", line 400, in open
response = self._open(req, data)
File "/usr/lib/python2.7/urllib2.py", line 418, in _open
'_open', req)
File "/usr/lib/python2.7/urllib2.py", line 378, in _call_chain
result = func(*args)
File "/usr/lib/python2.7/urllib2.py", line 1207, in http_open
return self.do_open(httplib.HTTPConnection, req)
File "/usr/lib/python2.7/urllib2.py", line 1146, in do_open
h = http_class(host, timeout=req.timeout) # will parse host:port
File "/usr/lib/python2.7/httplib.py", line 693, in __init__
self._set_hostport(host, port)
File "/usr/lib/python2.7/httplib.py", line 721, in _set_hostport
raise InvalidURL("nonnumeric port: '%s'" % host[i+1:])
httplib.InvalidURL: nonnumeric port: 'port/'
帮助会非常棒，因为我真的不知道如何在这么小的程序中犯这么大的错误！
因为代理配置错误，将引发异常。
在POSIX系统上，该库查找*_proxy环境变量（大写和小写）。对于HTTP URL，这是http_proxy环境变量。
您可以通过查找代理变量来验证这一点：
import os
print {k: v for k, v in os.environ.items() if k.lower().endswith('_proxy')}
无论您在系统上配置的任何值都不是有效的主机名和端口组合，Python对此感到窒息。
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我来说两句