当我开始金字塔pserve时,我得到了这个堆栈跟踪：
% python $(which pserve) ../etc/development.ini
Traceback (most recent call last):
File "/home/hughdbrown/.local/bin/pserve", line 9, in <module>
load_entry_point('pyramid==1.5', 'console_scripts', 'pserve')()
File "/home/hughdbrown/.virtualenvs/ponder/local/lib/python2.7/site-packages/pyramid-1.5-py2.7.egg/pyramid/scripts/pserve.py", line 51, in main
return command.run()
File "/home/hughdbrown/.virtualenvs/ponder/local/lib/python2.7/site-packages/pyramid-1.5-py2.7.egg/pyramid/scripts/pserve.py", line 316, in run
global_conf=vars)
File "/home/hughdbrown/.virtualenvs/ponder/local/lib/python2.7/site-packages/pyramid-1.5-py2.7.egg/pyramid/scripts/pserve.py", line 340, in loadapp
return loadapp(app_spec, name=name, relative_to=relative_to, **kw)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 247, in loadapp
return loadobj(APP, uri, name=name, **kw)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 271, in loadobj
global_conf=global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 296, in loadcontext
global_conf=global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 320, in _loadconfig
return loader.get_context(object_type, name, global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 454, in get_context
section)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 476, in _context_from_use
object_type, name=use, global_conf=global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 406, in get_context
global_conf=global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 296, in loadcontext
global_conf=global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 337, in _loadfunc
return loader.get_context(object_type, name, global_conf)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/loadwsgi.py", line 681, in get_context
obj = lookup_object(self.spec)
File "/home/hughdbrown/.virtualenvs/ponder/lib/python2.7/site-packages/PasteDeploy-1.5.2-py2.7.egg/paste/deploy/util.py", line 68, in lookup_object
module = __import__(parts)
File "/home/hughdbrown/.virtualenvs/ponder/local/lib/python2.7/site-packages/ponder-0.0.40-py2.7.egg/ponder/server/__init__.py", line 10, in <module>
from ponder.server.views import Endpoints, route
ImportError: No module named views
这可以从python REPL正常工作：
% python
Python 2.7.5+ (default, Feb 27 2014, 19:37:08)
[GCC 4.8.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from ponder.server.views import Endpoints, route
>>>
并从命令行导入：
% python -c "from ponder.server.views import Endpoints, route"
精简的树输出显示了我正在使用的内容：
% tree
├── __init__.py
├── ponder
│ ├── __init__.py
│ ├── server
│ │ ├── __init__.py
│ │ └── views
│ │ ├── environment_templates.py
│ │ ├── groups.py
│ │ ├── __init__.py
│ │ ├── instances.py
│ │ ├── tasks.py
│ │ └── users.py
我的PYTHONPATH被设置为这棵树的根：
% echo $PYTHONPATH
/home/hughdbrown/workspace/ept/ponder/lib
我在使用python 2.7的virtualenv中运行它.我今天已经开始工作了,但是我无法弄清楚问题出在哪里.首先,__ init__.py似乎可以使用之前的一些导入：
from .database import get_db
from .config import parser
from .views import Endpoints, route
(我将最后一行改为绝对导入.没有运气.)
我尝试过的事情：
>重建virtualenv
>设置PYTHONPATH
>在代码中使用绝对路径
> Looking for circular imports
我对如何调试此错误有进一步的建议.
所以我犯的错误只是看源树.问题实际上是在运行时环境中,在我的virtualenv中.当我看到那里时,我发现没有安装所需的文件.从根本上讲,问题是setup.py.
解决方法:
我通常的技巧是在导入问题发生的实际上下文中简单地打印sys.path.在你的情况下,打印的位置似乎在/home/hughdbrown/.local/bin/pserve中.然后检查dirs&路径显示的位置中的文件..
你首先要做到这一点：
import sys
并在python 2中使用print表达式：
print sys.path
或者在python 3中使用print函数：
print(sys.path)
标签：python,python-import 来源： https://codeday.me/bug/20190923/1815204.html
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