fix: add IP property to user object (#62)

Author: tyiuhc

src/amplitude_experiment/assignment/assignment_service.py

@@ -17,7 +17,7 @@ def to_event(assignment: Assignment, send_evaluated_props: bool) -> BaseEvent:
         user_attributes = [
             "country", "city", "region", "dma", "language",
             "platform", "version", "os", "device_manufacturer",
-            "device_brand", "device_model", "carrier"
+            "device_brand", "device_model", "carrier", "library", "ip_address"
         ]
         for attr in user_attributes:
             setattr(event, attr, getattr(assignment.user, attr, None))

src/amplitude_experiment/user.py

@@ -26,6 +26,7 @@ def __init__(
             device_model: str = None,
             carrier: str = None,
             library: str = None,
+            ip_address: str = None,
             user_properties: Dict[str, Any] = None,
             groups: Dict[str, List[str]] = None,
             group_properties: Dict[str, Dict[str, Dict[str, Any]]] = None,
@@ -50,6 +51,7 @@ def __init__(
                 device_model (str): Predefined field, must be manually provided
                 carrier (str): Predefined field, must be manually provided
                 library (str): Predefined field, must be manually provided
+                ip_address (str): Predefined field, must be manually provided
                 user_properties (dict): Custom user properties
                 groups (dict): Groups associated with the user
                 group_properties (dict): Properties for groups
@@ -72,6 +74,7 @@ def __init__(
         self.device_model = device_model
         self.carrier = carrier
         self.library = library
+        self.ip_address = ip_address
         self.user_properties = user_properties
         self.groups = groups
         self.group_properties = group_properties