def set_config(new_config={}):
<EOL>flask_app.base_config = dict(working_directory='<STR_LIT:.>',<EOL>template='<STR_LIT>',<EOL>debug=False,<EOL>port=None)<EOL>update_config(new_config)<EOL>
Reset config options to defaults, and then update (optionally)
    with the provided dictionary of options.