Artur interview q1

[darthur11]

1. graphql.py
   • created __execute_gql__ to remove repetetive part of the code
   • implemented __handle_response__ function to handle response and return data and headers
   • added input/output data types
   • f strings instead of .format
   • docstrings
   • black formatter
   • removed json import
2. available_metrics.py
   • f strings instead of .format
   • added input/output data types
   • docstrings
   • black formatter
3. sanbase_graphql_helper.py
   • transform_query_args using .get for dictionaries, improves readability
   • refactor _format_to_date function to raise an exception in case of incorrect format + return correct datatype
   • f strings instead of .format
   • added input/output data types
   • docstrings
   • black formatter
   • move QUERY_MAPPING from sanbase_graphql_helper.py to query_constants.py
4. query_constants.py
   • move QUERY_PATH_MAP from transform.py to query_constants.py
   • move QUERY_MAPPING from sanbase_graphql_helper.py to query_constants.py
5. async_batch.py, batch.py, get.py, get_many.py, transform.py
   • optimize imports due to refactoring of constants
   • black formatter
6. tests/utils.py
   • added headers method into TestResponse class to handle response.headers