运行示例金字塔程序时出现问题。给出导入错误：没有名为执行的模块错误

Question

我是 python 和 Pyramid 的新手。 我今天安装了金字塔，并且我的 mac 机器上已经预装了 python 2.7.1。我已经按照官方网站中提到的说明安装了金字塔。我已将 virtualenv 与 nositepackages 一起使用，如网站中所述，并在我的 /users/sreekanth 目录中安装了金字塔。

安装后，我尝试了我的第一个示例程序，如所提到的 在文档中。

当我尝试运行该程序时，出现如下错误。

sreekanths-MacBook-Pro:tasks Sreekanth$ ../bin/python2.7 tasks.py
Traceback (most recent call last):
  File "tasks.py", line 87, in <module>
    config.scan()
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/config/__init__.py", line 893, in scan
    scanner.scan(package, categories=categories, onerror=onerror)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/venusian-1.0a2-py2.7.egg/venusian/__init__.py", line 95, in scan
    invoke(name, ob)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/venusian-1.0a2-py2.7.egg/venusian/__init__.py", line 92, in invoke
    callback(self, name, ob)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/view.py", line 210, in callback
    config.add_view(view=ob, **settings)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/config/views.py", line 575, in wrapper
    return wrapped(*arg, **defaults)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/config/util.py", line 59, in wrapper
    result = wrapped(self, *arg, **kw)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/config/views.py", line 926, in add_view
    context = self.maybe_dotted(context)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/config/__init__.py", line 808, in maybe_dotted
    return self.name_resolver.maybe_resolve(dotted)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/path.py", line 318, in maybe_resolve
    return self._resolve(dotted, package)
  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/path.py", line 325, in _resolve
    return self._zope_dottedname_style(dotted, package)


  File "/Users/Sreekanth/env/lib/python2.7/site-packages/pyramid-1.3a3-py2.7.egg/pyramid/path.py", line 374, in _zope_dottedname_style
    __import__(used)
ImportError: No module named execptions

而且我无法从 python shell 导入金字塔模块。以下是我收到的错误消息。

sreekanths-MacBook-Pro:bin Sreekanth$ pwd
/Users/Sreekanth/env/bin
sreekanths-MacBook-Pro:bin Sreekanth$ python
Python 2.7.1 (r271:86832, Jun 16 2011, 16:59:05) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyramid
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named pyramid

有人可以向我解释一下我缺少什么以及如何才能完成这项工作吗？

Answer 1

第一个错误表明您的程序中有拼写错误。最有可能的是，您编写

from pyramid.execptions import NotFound

的是

from pyramid.exceptions import NotFound
#              ^^

因为您已将 pylons/pyramid 安装到 virtualenv 中，所以您需要首先在命令行中使用 source bin/activate 激活它。这将设置正确的 python 路径，您可以通过在 python 控制台中检查 sys.path 来检查该路径。