'module' has no attribute 'urlencode&#

问题:

When I try to follow the Python Wiki's example related to URL encoding:

>>> import urllib
>>> params = urllib.urlencode({'spam': 1, 'eggs': 2, 'bacon': 0})
>>> f = urllib.urlopen("http://www.musi-cal.com/cgi-bin/query", params)
>>> print f.read()

An error is raised on the second line:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'urlencode'

What am I missing?

回答1:

urllib has been split up in Python 3. The urllib.urlencode() function is now urllib.parse.urlencode(), and the urllib.urlopen() function is now urllib.request.urlopen().

回答2:

import urllib.parse
urllib.parse.urlencode({'spam': 1, 'eggs': 2, 'bacon': 0})

回答3:

You use the Python 2 docs but write your program in Python 3.