class SubmissionError(Exception):
    """Submission could not be loaded"""

    def __init__(self, url):
        self.url = url


class SubredditError(Exception):
    """Subreddit could not be reached"""

    def __init__(self, name):
        self.name = name


class ProgramError(Exception):
    """Problem executing an external program"""

    def __init__(self, name):
        self.name = name


class EscapeInterrupt(Exception):
    """Signal that the ESC key has been pressed"""