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How to use load_formatter_class method in Behave

Best Python code snippet using behave

_registry.py

...43    :param format_items:  List of format items (as: (name, class|class_name)).44    """45    for formatter_name, formatter_class_name in format_items:46        register_as(formatter_name, formatter_class_name)47def load_formatter_class(scoped_class_name):48    """Load a formatter class by using its scoped class name.49    :param scoped_class_name:  Formatter module and class name (as string).50    :return: Formatter class.51    :raises: ValueError, if scoped_class_name is invalid.52    :raises: ImportError, if module cannot be loaded or class is not in module.53    """54    if ":" not in scoped_class_name:55        message = 'REQUIRE: "module:class", but was: "%s"' % scoped_class_name56        raise ValueError(message)57    module_name, class_name = parse_scoped_name(scoped_class_name)58    formatter_module = load_module(module_name)59    formatter_class = getattr(formatter_module, class_name, None)60    if formatter_class is None:61        raise ImportError("CLASS NOT FOUND: %s" % scoped_class_name)62    return formatter_class63def select_formatter_class(formatter_name):64    """Resolve the formatter class by:65      * using one of the registered ones66      * loading a user-specified formatter class (like: my.module_name:MyClass)67    :param formatter_name:  Name of the formatter or scoped name (as string).68    :return: Formatter class69    :raises: LookupError, if not found.70    :raises: ImportError, if a user-specific formatter class cannot be loaded.71    :raises: ValueError, if formatter name is invalid.72    """73    try:74        return _formatter_registry[formatter_name]75    except KeyError:76        # -- NOT-FOUND:77        if ":" not in formatter_name:78            raise79        # -- OTHERWISE: SCOPED-NAME, try to load a user-specific formatter.80        # MAY RAISE: ImportError81        return load_formatter_class(formatter_name)82def is_formatter_valid(formatter_name):83    """Checks if the formatter is known (registered) or loadable.84    :param formatter_name: Format(ter) name to check (as string).85    :return: True, if formatter is known or can be loaded.86    """87    try:88        formatter_class = select_formatter_class(formatter_name)89        return issubclass(formatter_class, Formatter)90    except (LookupError, ImportError, ValueError):91        return False92def make_formatters(config, stream_openers):93    """Build a list of formatter, used by a behave runner.94    :param config:  Configuration object to use.95    :param stream_openers: List of stream openers to use (for formatters)....

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