Minor - Adding error message for empty dataframes

Author: jaidisido

awswrangler/mysql.py

@@ -361,7 +361,7 @@ def to_sql(
 
     """
     if df.empty is True:
-        raise exceptions.EmptyDataFrame()
+        raise exceptions.EmptyDataFrame("DataFrame cannot be empty.")
 
     mode = mode.strip().lower()
     allowed_modes = [

awswrangler/postgresql.py

@@ -350,7 +350,7 @@ def to_sql(
 
     """
     if df.empty is True:
-        raise exceptions.EmptyDataFrame()
+        raise exceptions.EmptyDataFrame("DataFrame cannot be empty.")
 
     mode = mode.strip().lower()
     allowed_modes = ["append", "overwrite", "upsert"]

awswrangler/redshift.py

@@ -798,7 +798,7 @@ def to_sql(  # pylint: disable=too-many-locals
 
     """
     if df.empty is True:
-        raise exceptions.EmptyDataFrame()
+        raise exceptions.EmptyDataFrame("DataFrame cannot be empty.")
     _validate_connection(con=con)
     autocommit_temp: bool = con.autocommit
     con.autocommit = False

awswrangler/s3/_write.py

@@ -56,7 +56,7 @@ def _validate_args(
     columns_comments: Optional[Dict[str, str]],
 ) -> None:
     if df.empty is True:
-        raise exceptions.EmptyDataFrame()
+        raise exceptions.EmptyDataFrame("DataFrame cannot be empty.")
     if dataset is False:
         if path is None:
             raise exceptions.InvalidArgumentValue("If dataset is False, the `path` argument must be passed.")

awswrangler/s3/_write_text.py

@@ -41,7 +41,7 @@ def _to_text(
     **pandas_kwargs: Any,
 ) -> List[str]:
     if df.empty is True:
-        raise exceptions.EmptyDataFrame()
+        raise exceptions.EmptyDataFrame("DataFrame cannot be empty.")
     if path is None and path_root is not None:
         file_path: str = (
             f"{path_root}{filename_prefix}.{file_format}{_COMPRESSION_2_EXT.get(pandas_kwargs.get('compression'))}"

awswrangler/sqlserver.py

@@ -364,7 +364,7 @@ def to_sql(
 
     """
     if df.empty is True:
-        raise exceptions.EmptyDataFrame()
+        raise exceptions.EmptyDataFrame("DataFrame cannot be empty.")
     _validate_connection(con=con)
     try:
         with con.cursor() as cursor: