Python introspection... 2005-06-10 - By Bernard Lebel
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Hello,
Is there an easier way to check if an object has, for example, the
"LocalProperties" attribute, other than by going through such a chunk
of code?
Right now I have this:
xsi = Application
oObject = xsi.selection(0)
# Iterate object attributes
for i in xrange( 0, oObject._oleobj_.GetTypeInfoCount() ):
typeInfo = xsi.selection(0)._oleobj_.GetTypeInfo( i )
typeAttr = typeInfo.GetTypeAttr()
# Iterate "functions" of object
for iFunction in xrange( 0, typeAttr.cFuncs ):
functionDescription = typeInfo.GetFuncDesc( iFunction )
# Get name of function (even if function is actually a property)
sName = typeInfo.GetNames( functionDescription.memid )[0]
if sName == 'LocalProperties': xsi.logmessage( 'yeah!' )
I have tried simpler approches, like
if not oObject.localproperties: xsi.logmessage( 'no' )
But I get an attribute error (<unknown>.localproperties).
Thanks
Bernard
On 4/6/05, Jerry Gamache <jerryg@(protected)> wrote:
> Once you know the function name, you sometimes want to get some very terse
documentation:
>
> def FormatDocumentation(typeInfo, funDesc):
> nameAndParms = typeInfo.GetNames(funDesc.memid)
> docum = typeInfo.GetDocumentation(funDesc.memid)
> import pythoncom
> # This one differentiates between "functions" and "accessors"
> if funDesc.invkind == pythoncom.INVOKE_FUNC:
> docStr = nameAndParms[0] + "(" + ",".join(nameAndParms[1:]) +
")\n"
> else:
> docStr = nameAndParms[0] + "\n"
> if docum[1]:
> docStr += "\t" + docum[1]
> return docStr
>
> def GetDocumentation( dynDisp, funcName = None ):
> allTypeInfoDoc = []
> for iTI in xrange(0,dynDisp._oleobj_.GetTypeInfoCount()):
> typeInfo = dynDisp._oleobj_.GetTypeInfo(iTI)
> typeAttr = typeInfo.GetTypeAttr()
> if funcName:
> for iFun in xrange(0,typeAttr.cFuncs):
> funDesc = typeInfo.GetFuncDesc(iFun)
> name = typeInfo.GetNames(funDesc.memid)[0]
> if name.upper() == funcName.upper():
> return FormatDocumentation(typeInfo,
funDesc)
> else:
> dict = {}
> className = dynDisp._oleobj_.GetTypeInfo(0)
.GetDocumentation(-1)
> classDoc = "class %s \n\t%s\n\n"%(className[0]
,className[1])
> allFuncDoc = []
> for iFun in xrange(0,typeAttr.cFuncs):
> funDesc = typeInfo.GetFuncDesc(iFun)
> name = typeInfo.GetNames(funDesc.memid)[0]
> if not dict.has_key(name):
> dict[name] = 1
> allFuncDoc.append(FormatDocumentation
(typeInfo, funDesc))
> allFuncDoc.sort()
> allTypeInfoDoc.append(classDoc + "\n".join(allFuncDoc
))
> if funcName:
> return "Documentation not found for %s"%(funcName,)
> else:
> return "\n".join(allTypeInfoDoc)
>
> # 2 ways to call this one: without a function name it retrieves doc for all
functions
> Application.LogMessage(GetDocumentation(Application))
> # And with a name, it tries to find the doc for that function:
> Application.LogMessage(GetDocumentation(Application, "StatusBar"))
> Application.LogMessage(GetDocumentation(Application, "NotThere"))
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