Purge schemas

Revit
3

You need set mode overrideWriteAccessWithUserPermission to True, or filter just schema allow permission is True , and you can follow api at EraseSchemaAndAllEntities Method and check python script example bellow.

import clr
clr.AddReference('RevitServices')
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB.ExtensibleStorage import Schema

# Input parameters
schemaName = "<YourSchemaNameHere>"
overrideWriteAccessWithUserPermission = True

# Get the current Revit document
doc = DocumentManager.Instance.CurrentDBDocument

# Start a Revit transaction
TransactionManager.Instance.EnsureInTransaction(doc)

# Find the schema by name
schema = Schema.Lookup(schemaName)

if schema:
    # Erase the schema and all entities associated with it
    Schema.EraseSchemaAndAllEntities(schema, overrideWriteAccessWithUserPermission)

# Commit the transaction
TransactionManager.Instance.TransactionTaskDone()

# Output message
OUT = "your schema erased"
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