"""Application exceptions.

==========================

"""


class FailedToStartError(Exception):  # pylint: disable=unused-variable
    """Should be raised when application fails to start."""

    def __init__(self, reason, *args, **kwargs):
        """Create new instance of FailedToStartError.

        Args:
            reason (str): Description of failure.
        """
        super(FailedToStartError).__init__(*args, **kwargs)
        self.reason = reason

    def __str__(self):
        """Get string representation of FailedToStart error."""
        return 'Application failed to start due to: {0}'.format(self.reason)