Question

我希望通过从as_view（）开始查看函数调用的进展来了解基于django类的视图。我在wsgi.py中有set_trace（）函数，如下所示：

def tracefunc(frame, event, arg, indent=[0]):
  if event == "call":
      indent[0] += 2
      #framea = sys._getframe( 0 )
      print "-" * indent[0] + "> call function", frame.f_code.co_name, frame.f_code.co_filename 
  elif event == "return":
      print "<" + "-" * indent[0], "exit function", frame.f_code.co_name
      indent[0] -= 2
  return tracefunc

from django.core.wsgi import get_wsgi_application
sys.settrace(tracefunc)
application = get_wsgi_application()

效果很好，我得到了这个输出：

--------> call function process_request /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py
----------> call function __init__ /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
------------> call function __init__ /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
<------------ exit function __init__
------------> call function _newname /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
<------------ exit function _newname
------------> call function _set_daemon /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
--------------> call function currentThread /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
----------------> call function __init__ /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
------------------> call function _newname /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
<------------------ exit function _newname
------------------> call function __init__ /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
--------------------> call function __init__ /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
<-------------------- exit function __init__
--------------------> call function _set_daemon /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py
<-------------------- exit function _set_daemon
--------------------> call function Event /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py

它打印出函数调用，但它似乎没有归结为django框架中的函数调用。有什么想法吗？我期待看到as.view（）调用get（）等..

通过导航方法调用学习CBV

0 个答案: