Can't create dictionary with integer keys in python script

Revit
1

I’m working with Revit 2021. Within a python script, I wanted to create a dictionary with integer values as keys but got an error

image
image1589×1053 84.8 KB

This is very strange because python itself allows this. Also, I did it before in Dynamo, although not Revit 2021 - has anything changed or am I missing something?

2

what are you trying to do? It seems you want the index of IN[0]?
what is you IN[0]?

if you are using a integer list in IN[0] … that won’t work since lns[i] will be out of range …

btw: “range(len(lns))” is the same as using just “lns”

mylist2 = [2, 4, 56, 477]
mydict = {}
for index, val in enumerate(mylist2):
    mydict[index] = val

print mydict
# {0: 2, 1: 4, 2: 56, 3: 477}
3

Thanks for the answer. I didn’t realize the ambiguity, IN[0] is itself a list of line objects.

There is no error in my syntax actually. I have just found out that the error only occurs when I try to pass the dictionary out of the python script and into Dynamo. As long as the dictionary is only used within the script, it works fine. When I pass it out, it looks like it automatically tries to convert integer keys to strings and fails.

So is it Dynamo itself that cannot handle integer keys? Can anyone clarify?

4

Hi @vancikv
Yes, in Dynamo, dictionary keys are only strings

5

Thanks. Good thing I only need the dictionary inside the script. I only passed it out to check the value.