decorate public functions in merge.py with set_module('pandas')

Author: chanshing

Diff for: pandas/core/reshape/merge.py

@@ -39,7 +39,10 @@
     npt,
 )
 from pandas.errors import MergeError
-from pandas.util._decorators import cache_readonly
+from pandas.util._decorators import (
+    cache_readonly,
+    set_module,
+)
 from pandas.util._exceptions import find_stack_level
 
 from pandas.core.dtypes.base import ExtensionDtype
@@ -138,6 +141,7 @@
 _known = (np.ndarray, ExtensionArray, Index, ABCSeries)
 
 
+@set_module("pandas")
 def merge(
     left: DataFrame | Series,
     right: DataFrame | Series,
@@ -502,6 +506,7 @@ def _groupby_and_merge(
     return result, lby
 
 
+@set_module("pandas")
 def merge_ordered(
     left: DataFrame | Series,
     right: DataFrame | Series,
@@ -645,6 +650,7 @@ def _merger(x, y) -> DataFrame:
     return result
 
 
+@set_module("pandas")
 def merge_asof(
     left: DataFrame | Series,
     right: DataFrame | Series,
@@ -1901,6 +1907,7 @@ def _validate_validate_kwd(self, validate: str) -> None:
             )
 
 
+@set_module("pandas")
 def get_join_indexers(
     left_keys: list[ArrayLike],
     right_keys: list[ArrayLike],
@@ -1979,6 +1986,7 @@ def get_join_indexers(
     return lidx, ridx
 
 
+@set_module("pandas")
 def get_join_indexers_non_unique(
     left: ArrayLike,
     right: ArrayLike,
@@ -2017,6 +2025,7 @@ def get_join_indexers_non_unique(
     return lidx, ridx
 
 
+@set_module("pandas")
 def restore_dropped_levels_multijoin(
     left: MultiIndex,
     right: MultiIndex,