Class Once

afy/utils.py:49–62

class Once():
    _id = {}

    def __init__(self, what, who=log, per=1e12):
        """ Do who(what) once per seconds.
        what: args for who
        who: callable
        per: frequency in seconds.
        """
        assert callable(who)
        now = time.time()
        if what not in Once._id or now - Once._id[what] > per:
            who(what)
            Once._id[what] = now


class TicToc: