python-amazon-mws · samamorgan · Mar 18, 2021 · Mar 18, 2021 · Jun 4, 2021
diff --git a/mws/future_utils/params.py b/mws/future_utils/params.py
@@ -1,9 +1,11 @@
 """Parameter manipulation utilities."""
 
-from collections.abc import Iterable, Mapping
-from urllib.parse import quote
 import datetime
 import json
+from collections.abc import Iterable, Mapping
+from urllib.parse import quote
+
+from dateutil.parser import isoparse
 
 # Removed top-level import to correct circular imports
 # (we're in backport territory, these things happen)
@@ -230,9 +232,19 @@ def clean_value(val):
 
     if isinstance(val, (datetime.datetime, datetime.date)):
         return clean_date(val)
+
     if isinstance(val, bool):
         return clean_bool(val)
 
+    # Detect date strings
+    try:
+        parsed_date = isoparse(val)
+        if len(val) == 10:
+            return clean_date(parsed_date.date())
+        return clean_date(parsed_date)
+    except ValueError:
+        pass
+
     # For all else, assume a string, and clean that.
     return clean_string(str(val))
 

diff --git a/requirements.txt b/requirements.txt
@@ -1 +1,2 @@
+python-dateutil
 requests
diff --git a/setup.py b/setup.py
@@ -9,6 +9,7 @@
     long_description = readme.read()
 
 requires = [
+    "python-dateutil",
     "requests",
 ]