ENH: set __module__ on date_range and bdate_range (#60264)

Author: chanshing

pandas/core/indexes/datetimes.py

@@ -816,6 +816,7 @@ def indexer_between_time(
         return mask.nonzero()[0]
 
 
+@set_module("pandas")
 def date_range(
     start=None,
     end=None,
@@ -1020,6 +1021,7 @@ def date_range(
     return DatetimeIndex._simple_new(dtarr, name=name)
 
 
+@set_module("pandas")
 def bdate_range(
     start=None,
     end=None,

pandas/tests/api/test_api.py

@@ -418,3 +418,5 @@ def test_set_module():
     assert pd.Timestamp.__module__ == "pandas"
     assert pd.Timedelta.__module__ == "pandas"
     assert pd.Series.__module__ == "pandas"
+    assert pd.date_range.__module__ == "pandas"
+    assert pd.bdate_range.__module__ == "pandas"