python模块导入错误

Question

我正在使用 macports 安装各种模块。一般来说，这工作得很好，但下面是我遇到的一个不容易解决的错误：

$ python
Python 2.6.6 (r266:84292, Feb 12 2011, 16:57:53) 
[GCC 4.2.1 (Apple Inc. build 5664)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import dns
>>> import opcode
>>> from dns import resolver
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/dns/resolver.py", line 26, in <module>
    import dns.message
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/dns/message.py", line 28, in <module>
    import dns.opcode
ImportError: No module named opcode

这可能是路径问题吗？

>>> import sys
>>> sys.path
['', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python26.zip', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-darwin', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-mac', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-mac/lib-scriptpackages', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-tk', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-old', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-dynload', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages', '/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info']

$ cat /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/dns/init.py [评论被删减] # DNS 类的 init.py。

__version__ = '2.3.3'

import Type,Opcode,Status,Class
from Base import DnsRequest, DNSError
from Lib import DnsResult
from Base import *
from Lib import *
Error=DNSError
from lazy import *
Request = DnsRequest
Result = DnsResult

提前致谢。

Answer 1

因为您需要执行以下操作：

from dns import resolver

这不起作用：

import datetime.datetime

但这可以：

from datetime import datetime

如果您要导入属于另一个包的包，则需要使用“from”语法

Answer 2

我卸载了 py26-dnspython 并重新安装。问题解决了。 Fink 对 freenode 提出了建议。谢谢。

Answer 3

我使用的是 Python 3.7 并且安装了 pubdns。这解决了我的问题。
我在使用 py3dns、pyDNS（无法安装）、dnspython 等方面遇到了极大的困难