当我尝试解析我的django项目中的链接时，我遇到了错误页面。它告诉我函数find_module（）接受3个参数但只提供2个参数。现在我理解这意味着什么，但我找不到错误的起源。回溯指向一个视图，但我没有看到代码有任何问题。
这是追溯：
Environment:
Request Method: GET
Request URL: https://0.0.0.0/ai_stats/dash/development/
Django Version: 1.3.1
Python Version: 2.7.5
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.admin',
'django.contrib.admindocs',
'apps.minisar',
'apps.mock',
'apps.actional',
'apps.ai_stats',
'apps.health',
'apps.soap',
'apps.directentry',
'apps.toys',
'apps.solutions']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Traceback:
File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
111. response = callback(request, *callback_args, **callback_kwargs)
File "/app/gaic/apps/ai_stats/views.py" in dashboard
26. return render_to_response('ai_stats/dashboard.html', locals())
File "/usr/lib/python2.7/site-packages/django/shortcuts/__init__.py" in render_to_response
20. return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs)
File "/usr/lib/python2.7/site-packages/django/template/loader.py" in render_to_string
181. t = get_template(template_name)
File "/usr/lib/python2.7/site-packages/django/template/loader.py" in get_template
157. template, origin = find_template(template_name)
File "/usr/lib/python2.7/site-packages/django/template/loader.py" in find_template
134. source, display_name = loader(name, dirs)
File "/usr/lib/python2.7/site-packages/django/template/loader.py" in __call__
42. return self.load_template(template_name, template_dirs)
File "/usr/lib/python2.7/site-packages/django/template/loader.py" in load_template
48. template = get_template_from_string(source, origin, template_name)
File "/usr/lib/python2.7/site-packages/django/template/loader.py" in get_template_from_string
168. return Template(source, origin, name)
File "/usr/lib/python2.7/site-packages/django/template/base.py" in __init__
108. self.nodelist = compile_string(template_string, origin)
File "/usr/lib/python2.7/site-packages/django/template/base.py" in compile_string
136. return parser.parse()
File "/usr/lib/python2.7/site-packages/django/template/base.py" in parse
239. compiled_result = compile_func(self, token)
File "/usr/lib/python2.7/site-packages/django/template/loader_tags.py" in do_extends
214. nodelist = parser.parse()
File "/usr/lib/python2.7/site-packages/django/template/base.py" in parse
239. compiled_result = compile_func(self, token)
File "/usr/lib/python2.7/site-packages/django/template/defaulttags.py" in load
1050. lib = get_library(taglib)
File "/usr/lib/python2.7/site-packages/django/template/base.py" in get_library
1007. lib = import_library(taglib_module)
File "/usr/lib/python2.7/site-packages/django/template/base.py" in import_library
959. if not module_has_submodule(app_module, taglib):
File "/usr/lib/python2.7/site-packages/django/utils/module_loading.py" in module_has_submodule
15. if finder.find_module(name):
Exception Type: TypeError at /ai_stats/dash/development/
Exception Value: find_module() takes exactly 3 arguments (2 given)
以及它引用的views.py文件：
from django.shortcuts import render_to_response
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
import ai2
import logging
logging.basicConfig()
log = logging.getLogger(__name__)
def index(request):
# ai2.refresh_cache()
return render_to_response('ai_stats/index.html', locals())
# return HttpResponseRedirect(reverse('apps.ai_stats.views.dashboard', kwargs={'env':ai2.PROD}))
def dashboard(request, env):
ai2.refresh_cache()
# env = ai2.PROD
mf_error, mf_data, _ = ai2.AIStats().data_for_chart('most_failures', env=env)
mc_error, mc_data, _ = ai2.AIStats().data_for_chart('most_calls', env=env)
wp_error, wp_data, _ = ai2.AIStats().data_for_chart('worst_performing', env=env)
error = (mf_error or '') + (mc_error or '') + (wp_error or '')
cache_timestamp = ai2.data_cache['timestamp']
return render_to_response('ai_stats/dashboard.html', locals())
def drill(request, env, chart):
# env = ai2.PROD
row_limit = int(request.GET.get('limit', 100))
error, data, _ = ai2.AIStats().data_for_chart(chart, env=env, limit=row_limit)
cache_timestamp = ai2.data_cache['timestamp']
return render_to_response('ai_stats/drill_%s.html' % chart, locals())
def dash_data(request, env, chart):
# env = ai2.PROD
error, data, chart_type = ai2.AIStats().data_for_chart(chart, env=env, params=request.GET)
r = render_to_response('ai_stats/%s.xml' % chart, locals())
if chart_type == ai2.GRAPH_CHART:
r['Content-Type'] = 'text/xml'
return r
def pop(request, env, chart):
pop_template = 'pop_mtd'
if chart == 'all_mtd':
pop_template = 'pop_all'
ops_chart = '%s_ops' % chart
return render_to_response('ai_stats/' + pop_template + '.html', locals())
和urls.py：
import os
from django.conf.urls.defaults import *
from django.conf import settings
# Uncomment the next two lines to enable the admin:
# from django.contrib import admin
# admin.autodiscover()
urlpatterns = patterns('',
url(r'^media/(?P<path>.*)$', 'django.views.static.serve', {'document_root': os.path.join(settings.DJANGO_PROJECT_ROOT, 'ai_stats/media')}),
url(r'^$', 'apps.ai_stats.views.index', name='index'),
url(r'^dash$', 'apps.ai_stats.views.index', name='index'),
url(r'^dash/(?P<env>(production|certification|uat|integration|development))/$', 'apps.ai_stats.views.dashboard'),
url(r'^dash/(?P<env>(production|certification|uat|integration|development))/drill/(?P<chart>[a-z_]+)/$', 'apps.ai_stats.views.drill'),
url(r'^dash/(?P<env>(production|certification|uat|integration|development))/pop/(?P<chart>[a-z_]+)/$', 'apps.ai_stats.views.pop'),
url(r'^dash/(?P<env>(production|certification|uat|integration|development))/(?P<chart>[a-z_]+)/$', 'apps.ai_stats.views.dash_data'),
在sys.meta_path有一个找不到方法签名的发现者。打开一个shell，迭代它以确定它是什么。这可能是一个用python 3而不是python 2编写的finder，它没有path的可选find_module参数。
您的问题的答案是卸载该软件包，或者（以及我建议的）将项目的依赖项（包括Django）更新到最新版本。以及碰到python 3（如果可以的话）。显然，这第二个选择会变得更加繁琐，但是当你坚持使用Django的非维护版本时，你只会遇到更多这些问题。