Close all file handles that are left dangling to avoid warnings such as ``` ResourceWarning: unclosed file <_io.TextIOWrapper name='...' mode='r' encoding='UTF-8'> params = json_load(filename.open('r')) ```
Close all file handles that are left dangling to avoid warnings such as ``` ResourceWarning: unclosed file <_io.TextIOWrapper name='...' mode='r' encoding='UTF-8'> params = json_load(filename.open('r')) ```