Question

我正在尝试使用此文档启动新项目：http://pylonshq.com/docs/en/1.0/gettingstarted/（下载go-pylons，使用它制作virtualenv等）。

但是，当我试图启动helloworld应用程序时，它说：

$ paster serve --reload development.ini 
Starting subprocess with file monitor
Traceback (most recent call last):
  File "/home/users/vrusinov/workspace/mydevenv/bin/paster", line 8, in <module>
    load_entry_point('PasteScript==1.7.3', 'console_scripts', 'paster')()
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 84, in run
    invoke(command, command_name, options, args[1:])
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 123, in invoke
    exit_code = runner.run(args)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/command.py", line 218, in run
    result = self.command()
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/serve.py", line 276, in command
    relative_to=base, global_conf=vars)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteScript-1.7.3-py2.6.egg/paste/script/serve.py", line 313, in loadapp
    **kw)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 203, in loadapp
    return loadobj(APP, uri, name=name, **kw)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 223, in loadobj
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 247, in loadcontext
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 270, in _loadconfig
    return loader.get_context(object_type, name, global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 401, in get_context
    section)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 423, in _context_from_use
    object_type, name=use, global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 353, in get_context
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 247, in loadcontext
    global_conf=global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 277, in _loadegg
    return loader.get_context(object_type, name, global_conf)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 553, in get_context
    object_type, name=name)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/PasteDeploy-1.3.4-py2.6.egg/paste/deploy/loadwsgi.py", line 573, in find_egg_entry_point
    pkg_resources.require(self.spec)
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 666, in require
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 546, in resolve
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 2436, in parse_requirements
  File "/home/users/vrusinov/workspace/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 2404, in scan_list
ValueError: ('Expected version spec in', 'srvbakweb/', 'at', '/')

可能是什么原因？如何调试？

我在gentoo linux上使用python 2.6。我也尝试过--no-site-packages开关用于go-pylons和系统范围的Pylons安装。同样的错误：（

Answer 1

经过一个小时的调试（setuptools非常复杂而且不是自我记录工具）我找到了这个例外的原因：我使用了“paster create -t pylons myappname /”。最后/造成了这个例外。

Answer 2

我在启动服务器时遇到了类似的错误，因为我正在关注Pylons的书。事实证明，在创建项目时我的路径也出错了。

我相信我运行create -t pylons ~/dev/python/HelloWorld并导致错误（可能是因为代字号~）。

我改为使用virtualenv中的激活脚本（请参阅Pylons书籍以供参考）和~/dev/python运行create -t pylons HelloWorld，以解决问题。

Pylons helloworld - “预期的版本规格......”错误

2 个答案: