Snowflake Python Connector: Copy Command Status and Error Handling - snowflake-cloud-data-platform

Question

According to the Snowflake docs, when a user executes a copy command it will return 1 of 3 status values:
loaded
load failed
partially loaded
My question is if I use the Python Snowflake Connector (see example code below) to execute a copy command is an exception raised if the status returned is load failed or partially loaded?
Thank you!
copy_dml = 'copy into database.schema.table ' \
'from #fully_qualified_stage pattern = \'.*'+ table_name +'.*[.]json\' ' \
'file_format = (format_name = fully_qualified_json_format) ' \
'force = true;'
try:
import snowflake.connector
#-------------------------------------------------------------------------------------------------------------------------------
#snowflake variables
snowflake_warehouse = credentials.iloc[0]['snowflake_warehouse']
snowflake_account = credentials.iloc[0]['snowflake_account']
snowflake_role = credentials.iloc[0]['snowflake_role']
snowflake_username = credentials.iloc[0]['Username']
snowflake_password = credentials.iloc[0]['Password']
snowflake_connection = ''
cs = ''#snowflake connection cursor
exec_copy_dml = ''
copy_result_field_metadata = ''
copy_result = ''
snowflake_copy_result_df = ''
#-------------------------------------------------------------------------------------------------------------------------------
# load JSON file(s) into Snowflake
snowflake_connection = snowflake.connector.connect(
user = snowflake_username,
password = snowflake_password,
account = snowflake_account,
warehouse = snowflake_warehouse,
role = snowflake_role)
cs = snowflake_connection.cursor()
exec_copy_dml = cs.execute(copy_dml)
copy_result = exec_copy_dml.fetchall()
copy_result_field_metadata = cs.description
snowflake_copy_result_df = snowflake_results_df(copy_result_field_metadata,copy_result)
except snowflake.connector.errors.ProgrammingError as copy_error:
copy_exception_message = "There was a problem loading JSON files to Snowflake," + \
"a snowflake.connector.errors.ProgrammingError exception was raised."
print(copy_exception_message)
raise
except Exception as error_message:
raise
finally:
snowflake_connection.close()

Answer 1

I believe it won't raise exception for load status, you have to check the load status and take necessary action if required.

Answer 2

After you issue your COPY INTO dml, you can run the following query -
SELECT * FROM TABLE(VALIDATE(TABLE_NAME, job_id => '_last'))
This will give you details on the files that you were trying to load. It will normally return empty, unless you encountered issues upload.
You can save this save results in an object and make necessary control adjustments.