当我运行我的Python Django应用程序时,我收到一个错误:
'str'对象不可调用
我在这里尝试了解决方案:TypeError:'str'对象不可调用(Python),但它们对我不起作用.我正在尝试运行Django书籍样本:
view.py:
# Create your views here.
from django.http import HttpResponse
import datetime
def current_time(request):
now = datetime.datetime.now()
html = "<html><head></head><body>%s</body></html>" % str(now)
return HttpResponse(html)
def hello(request,name):
return HttpResponse("Hello django")
def what(request):
return HttpResponse("what's the problem django?")
urls.py:
from django.conf.urls import patterns, include, url
from hello_django.views import current_time,hello,what
urlpatterns = patterns('',
url(r'^time/$','current_time'),
url(r'^what/$','what'),
url(r'^hello/([a-zA-Z0-9]+)','hello'),
)
这是我正在尝试的网址:http://127.0.0.1:8000/what/.
堆栈跟踪:
TypeError at /what/
'str' object is not callable
Request Method: GET
Request URL: http://127.0.0.1:8000/what/
Django Version: 1.5.1
Exception Type: TypeError
Exception Value:
'str' object is not callable
Exception Location: C:\Python27\lib\site-packages\django\core\handlers\base.py in get_response, line 115
Python Executable: C:\Python27\python.exe
Python Version: 2.7.4
Python Path:
['D:\\Developer Center\\PyCharm\\helloDjango',
'C:\\Python27\\lib\\site-packages\\pip-1.3.1-py2.7.egg',
'C:\\Python27\\lib\\site-packages\\mysql_python-1.2.4-py2.7-win32.egg',
'D:\\Developer Center\\PyCharm\\helloDjango',
'C:\\Windows\\SYSTEM32\\python27.zip',
'C:\\Python27\\DLLs',
'C:\\Python27\\lib',
'C:\\Python27\\lib\\plat-win',
'C:\\Python27\\lib\\lib-tk',
'C:\\Python27',
'C:\\Python27\\lib\\site-packages',
'C:\\Python27\\lib\\site-packages\\PIL']
Server time: Tue, 7 Jan 2014 11:44:30 +0330
Traceback Switch to copy-and-paste view
C:\Python27\lib\site-packages\django\core\handlers\base.py in get_response
response = callback(request, *callback_args, **callback_kwargs) ...
? Local vars
您需要将实际视图提供给url():
urlpatterns = patterns('',
url(r'^time/$', current_time),
url(r'^what/$', what),
url(r'^hello/([a-zA-Z0-9]+)', hello),
)
请注意,我删除了引号what和其他视图函数.
你仍然可以在url()配置中使用字符串,但是你需要<modulename>.<viewname>在第一个参数patterns()(字符串)中使用语法或命名模块,然后你也不需要导入函数:
urlpatterns = patterns('',
url(r'^time/$', 'hello_django.views.current_time'),
url(r'^what/$', 'hello_django.views.what'),
url(r'^hello/([a-zA-Z0-9]+)', 'hello_django.views.hello'),
)
要么
urlpatterns = patterns('hello_django.views',
url(r'^time/$', 'current_time'),
url(r'^what/$', 'what'),
url(r'^hello/([a-zA-Z0-9]+)', 'hello'),
)
请参阅详细的URL调度程序文档.
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