Log argparse.Namespace objects as dicts (#984)

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Features
 - Added support for Prophet integration ([#978](https://github.com/neptune-ai/neptune-client/pull/978))
+- Log argparse.Namespace objects as dicts ([#984](https://github.com/neptune-ai/neptune-client/pull/984))
 
 ## neptune-client 0.16.5
 

neptune/new/metadata_containers/metadata_container.py

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 import abc
+import argparse
 import atexit
 import itertools
 import threading
@@ -256,6 +257,8 @@ def define(
             pass
         elif isinstance(value, Handler):
             value = ValueCopy(value)
+        elif isinstance(value, argparse.Namespace):
+            value = Namespace(vars(value))
         elif is_bool(value):
             value = Boolean(value)
         elif is_int(value):

tests/neptune/new/test_handler.py

@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+import argparse
 import os
 import unittest
 
@@ -404,6 +405,29 @@ def test_assign_dict(self):
         self.assertEqual(exp["params/toys"].fetch_last(), "hat")
         self.assertEqual(exp["params/nested/nested/deep_secret"].fetch_last(), 15)
 
+    def test_convertable_to_dict(self):
+        exp = init(mode="debug", flush_period=0.5)
+        exp["params"] = argparse.Namespace(
+            foo="bar", baz=42, nested=argparse.Namespace(nested_attr=[1, 2, 3], num=55)
+        )
+        self.assertEqual(exp["params/foo"].fetch(), "bar")
+        self.assertEqual(exp["params/baz"].fetch(), 42)
+        self.assertEqual(exp["params/nested/nested_attr"].fetch(), "[1, 2, 3]")
+        self.assertEqual(exp["params/nested/num"].fetch(), 55)
+
+    def test_object(self):
+        class Dog:
+            def __init__(self, name, fierceness):
+                self.name = name
+                self.fierceness = fierceness
+
+            def __str__(self):
+                return f"{self.name} goes " + "Woof! " * self.fierceness
+
+        exp = init(mode="debug", flush_period=0.5)
+        exp["burek"] = Dog("Burek", 3)
+        self.assertEqual(exp["burek"].fetch(), "Burek goes Woof! Woof! Woof! ")
+
     def test_artifacts(self):
         exp = init(mode="debug", flush_period=0.5)
         exp["art1"].track_files("s3://path/to/tracking/file", destination="/some/destination")