[Bug]: cpython 3.8.5 shows "<class 'int'>" instead of "<class 'BuiltInParameter'>" enum member of BuiltInParameter about pyrevit

[ay-ex]

a possible workaround is to go via forge_type_id - it is not pretty though: 🤔

• via direct access:

from Autodesk.Revit.DB import BuiltInParameter as Bip
from Autodesk.Revit.DB import ForgeTypeId, ParameterUtils


doc = __revit__.ActiveUIDocument.Document
param = doc.ActiveView.GenLevel.GetParameter(ForgeTypeId(ParameterUtils.GetParameterTypeId(getattr(Bip, "LEVEL_IS_BUILDING_STORY")).TypeId))
# instead of just:
# param = doc.ActiveView.GenLevel.get_Parameter(Bip.LEVEL_IS_BUILDING_STORY)

but already the next step: param.StorageType is your yet another enum that only returns int.

• via creating dict as lookup table for BuiltInCategory:

print(35*"-")
print("bic: forge_type_id_by_cat_name")
from Autodesk.Revit.DB import BuiltInCategory as Bic
from Autodesk.Revit.DB import Category


forge_type_id_by_cat_name = {}

for bic_cat in dir(Bic):
    if bic_cat.startswith("OST_"):
        bic_name = bic_cat.split("OST_")[-1]
        bic = getattr(Bic, bic_cat)
        if Category.IsBuiltInCategoryValid(bic):
            ftid = Category.GetBuiltInCategoryTypeId(bic)
            forge_type_id_by_cat_name[bic_name] = ftid.TypeId
            # print(ftid.TypeId)
        else:
            pass
            # print("skipped: ", bic_name)

print(f"found {} ftids".format(len(forge_type_id_by_cat_name)))
# for k, v in sorted(forge_type_id_by_cat_name.items()):
#     print(k, v)

• via creating dict as lookup table for BuiltInParameter:

print(35*"-")
print("bip: forge_type_id_by_param_name")
from Autodesk.Revit.DB import BuiltInParameter as Bip
from Autodesk.Revit.DB import ForgeTypeId, ParameterUtils


forge_type_id_by_param_name = {}

skip_names = {
    "INVALID",
    "Overloads",
}

for bip_name in dir(Bip):
    # print(bip_name)
    if bip_name in skip_names:
        continue
    if bip_name.endswith("__"):
        continue
    bip = getattr(Bip, bip_name)
    if "method" in str(bip) or "function" in str(bip):
        continue
    ftid = ParameterUtils.GetParameterTypeId(bip).TypeId
    # print(bip_name, ftid)
    forge_type_id_by_param_name[bip_name] = ftid

print("found {} ftids:".format(len(forge_type_id_by_param_name)))
# for k, v in sorted(forge_type_id_by_param_name.items()):
#     print(k, v)

so ideally there could be a fix with which we could access enums in pyRevit cpython the same way as in ironpython. 🤔

[ay-ex]

I just tested it on pyRevit 4.8.16 , cpython 3.8.5 - same issue there.

[sanzoghenzo]

Hi @ay-ex, sorry for the delay in the response.

This is a known bug of the version of pythonnet currently used by pyrevit. It was solved in version 3.0.
We're trying to update it alongside the upgrade to the .net8 sdk to support revit 2025.
As this was not our project originally and we're not super c# experts, we're trying to do the best we can to reach this goal.
The upcoming pyrevit version 5 should fix this issue (no ETA yet, unfortunately).

[ay-ex]

hi @sanzoghenzo ,
no worries and thank you for the notification. 🙂
looking forward to pyRevit 5.