Display all properties with reflection
Hello, I like create a methode that display all the properties of an instance of classe with their value. I try the following code: see def __str__ (self) methode. But it displays only the instance attributes values not the properties and their value. In pseudo-code: For Each Properties : print property_name, property_value It is possible ? Where is the collection of properties into the Python Object Metamodele? Thank you. Zorgi class PhysicalObject(Subject): """ Base class for physical Object They inherit from Subject whose contract are: def attach(self, observer) def detach(self, observer) def notify(self, modifier = None) """ def __init__(self, World, Space, ThePhysicalProperties): """ """ #Initialize Subject-Observers mecanism Subject.__init__(self) self.__name = None ... def __str__ (self): """ Return a string that describe the value of all attributes for the instance """ result = None msgList = ["%s --->%s"%(str(attribute), str(value)) for (attribute, value) in self.__dict__.items()] msgList.sort() result = "\n\n%s instance :" % (self.__class__.__name__) result += "\n".join (msgList) return result Name = property(fget = __getName, fset = __setName) Position = property(fget = __getPosition, fset = __setPosition) LinearVelocity = property(fget = __getLinearVelocity, fset = __setLinearVelocity) AngularVelocity= property(fget = __getAngularVelocity, fset = __setAngularVelocity) RotationMatrice= property(fget = __getRotationMatrice,fset = __setRotationMatrice) Masse = property(fget = __getMass, fset = __setMass) GravityMode= property(fget = __getGravityMode,fset = __setGravityMode) - Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail -- http://mail.python.org/mailman/listinfo/python-list
Get the instance name from a list by Reflection
Hello, I cannot find into documentation how to get the instance name. I found the attributes __dict__,__class__ ,__bases__ __name__ , but if i have the code: class A :pass a1 = A () a2 = A () aList = [a1,a2] for elem in aList : print elem.__instance_name__ ??? I expect to have "a1" "a2" ... But it does not work ... help please Zorgi - Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail -- http://mail.python.org/mailman/listinfo/python-list
Delete a instance passed by reference into a method
Hello, I am very surprising by the Python interpreter behavior : see code I initialize a 'A' and a 'B', and i give a B instance reference to the instance A in 'm1' method. I can modify (IN/OUT mode) the 'i' attribute ( aB.i = 10 ) , BUT I CANNOT DELETE "aB" into the fonction m1 ! the code " del aB " or " aB= None" has no effect. 'aB' still exists when m1() is finsihed! WHY ? How can i do that? Thank you. Zorgi class A(object): def __init__(self): pass def m1 (self, aB ): aB.i = 10 del aB print "no more B" class B(object): def __init__(self,i): self.i = i def __del__(self): print "delete B" aA = A () aB = B ( i = 6) unA.m1 (aB ) print str( aB .i ) #---> Display 10, aB is not destroy ! - Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail -- http://mail.python.org/mailman/listinfo/python-list
Python UML Metamodel
Hello, I find an OPEN SOURCE tool (http://bouml.free.fr/) that Recently generates Python code from UML model. I like to model the Python language metamodel himself, with it, e.g the model of the language: I need that to better understand the language constraint of the language. for example, i like to model that : -a class "class" may inherit from 0..* class -a class "class" is create from a class that is its "metaclass" -a class "class" has 0..n attributes and 0..n method -a class "module" has 0..n class "class" Does anyone know a document that describes it already, because I think it is complicated to find this information in the documentation of Python. For example, can i say that: -a class "class" has 0..n properties ? It seems that the Python metamodel is not perfect, because I do not find attribute which give me the property list with a code like: "myPropertyList = myclass.properties" - a class "method" can contains nested "method", but what is the way to get a list of internal methods, without use ? Can i just write: "myNestedMethodList = method.nestedMethodList" I think a metamodel Python would be welcome to complement the BNF (http://docs.python.org/ref/grammar.txt), so as to know fully understand the relationships between the various elements of language. Thank you - Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail -- http://mail.python.org/mailman/listinfo/python-list
