I'd like http://example.com/view_item/4 to handle a view for a selected object by passing the object ID, but after trying every combination I've found online of what will work, I'm still getting the following error:
TypeError: view must be a callable or a list/tuple in the case of include().
This is my path:
url(r'^view_item/(?P<query>\w+)$','view_item')]
I've verified the regex, I've tried without the regex.
I was forgetting, as the error stated, to include the callable view. My confusion comes from mixed methods in learning resources.
Working path example:
url(r'^view_item/(?P<query>\w+)$',view_item, 'view_item')]
Related
I created a class and specified the attributes of the member with the following code:
Mexico_66 = Product('Mexico 66 VIN', 99.90, 4)
In the class, I have defined the following magic method:
def __len__(self):
print(self.quantity)
When I try to use this magic method with the following syntax: len(Mexico_66), the code executes but gives off an error at the very end: TypeError: 'NoneType' object cannot be interpreted as an integer
However, when executing the code with the following syntax: Mexico_66.len(), no error appears.
I don't quite understand why the error is caused in the first case and what is the difference between the 1st and 2nd options of executing magic method. I would be grateful if someone could explain it.
The __len__ magic method is supposed to return something, in this case, probably return self.quantity. You are getting the type error because your method implicitly returns None.
The idea of using these magic methods is to define behavior for commonly used functions like len(). If you call it using instance.__len__(), you are not utilizing the magic method, you are simply calling it like a regular instance method, which is why you don't see any error in that use case
I'm a complete newbie on LDAP Python
I inherited an LDAP with quite a complex DN, something like this:
blaAnfType=AAA-BBB+blaAnfId=AAA-BBB+blaUser=xxxxx
When I try and change one of the LDAP entry that an RDN in the DN, I use modrdn
modrdn_s(dn, change, True/False)
I can't get the correct syntax for it to work, either I get Object Class Violation or Syntax Error or Unable to create modlist etc...
For the dn I use "blaAnfType=AAA-BBB+blaAnfId=AAA-BBB+blaUser=xxxxx" (If I put something wrong in there I get object not found so I know the DN is correct.
However, for the change, I'm stuck.
I've tried
"{'blfAnfType': 'ZZZ'}" - Object Class violation or Cannot be a Tuple or cannot be a dict etc.
'blfAntType=ZZZ'
So:
modrdn_s(dn as shown above, One of the above and others., True/False)
e.g.
#connection.modrdn_s('blaAnfType=AAA-BBB+blaAnfId=AAA-BBB+blaUser=xxxxx', 'blaAnfType=ZZZ', 1)
What exactly should I have in there for it to to be correct.
For adding and modifying entries I use modlist but I find no modlist for RDN so I'm just trying what I can think of.
Thanks in advance.
I have seen all previous questions about this, but nothing seems to be working on my end. I am trying to run a test that uses a protobuf generated file, called 'resource_pb2'. I am using Python 3.8 with grpc 1.33.2 and protobuf version 3.14.
When using a class from this protobuf generated file, my test fails with the following error:
Parameter to MergeFrom() must be instance of same class: expected RecognitionResource got RecognitionResource
I've checked the type and id's of all the "recognition resource" classes being called in that particular test, and I get the following:
<class 'resource_pb2.RecognitionResource'> 2069160783760
<class 'resource_pb2.RecognitionResource'> 2069160783760
<class 'resource_pb2.RecognitionResource'> 2069160783760
They are clearly all being called from the same source, so why is this issue occuring?
I had a similar issue and the reason was that I had made a mistake when passing parameters to the function.
The problem was solved when I realized about my bug and I invoked the function in the right way, with all required parameters properly set.
Hope it helps.
I'm using Python to work with networkx and draw some graphs.
I ran into a problem raising:
TypeError: 'dict' object is not callable
on this line of code:
set_node_color(num, list(Graph.node()))
I searched to find that this error is raised when I'm using a variable name dict.
The problem is, I'm not using any variables with the name dict, nor am I using any dictionary types anywhere in the code.
In case it's necessary, printing the type of Graph gives <class 'networkx.classes.digraph.Digraph'>.
I also tried printing the type for Graph.node() only to receive the same error, telling me 'dict' object is not callable.
So I suspect Graph.node() to be a dict type variable, but using (Graph.node()).items() raises the same TypeError.
Any help or advices would be nice. Thanks.
Maybe Graph.node is a dict object, so Graph.node() is not callable.
Using PyQt5's D-Bus, how do I create an error? For example, if someone sends an unknown command in a chat program, I'd like to be able to let the client know something like as follows:
error = QDBusMessage.createError(QDBusError.UnknownProperty, "unknown command")
QDBusConnection.systemBus().send(error)
However, this fails with the message:
*** TypeError: arguments did not match any overloaded call:
createErrorReply(self, str, str): first argument of unbound method must have type 'QDBusMessage'
createErrorReply(self, QDBusError): first argument of unbound method must have type 'QDBusMessage'
createErrorReply(self, QDBusError.ErrorType, str): first argument of unbound method must have type 'QDBusMessage'
I can't make heads no tail of this error, since as far as I can tell I'm using it exactly as described. The first arg must be QDBusMessage, since that's what's before the dot. The second arg is of the right type, being <class 'PyQt5.QtDBus.QDBusError.ErrorType'> as returned by type(QDBusError.UnknownProperty). And the quotes mean it's a string, which is what str is.
I also tried sendErrorReply(), but that doesn't seem to exist in PyQt5. At least, I can't find it - it's not beside systemBus's send(), and it's not found in QDBusMessage.
Neither of the examples in PyQt5's examples/dbus/chat folder emit errors. There is no Python documentation available at http://pyqt.sourceforge.net/Docs/PyQt5/QtDBus.html.
I came across your question when I had the same problem as you, a lack of sendErrorReply in PyQt5.
Here's how I got it to work in my Bluetooth application:
#pyqtSlot(QDBusMessage)
def AuthorizeService(self, message):
print("rejecting service authorization")
error = message.createErrorReply(QDBusError.AccessDenied, "Failed")
self._bus.send(error)
The trick is to create the error reply from the message that was received.