“““
This?module?contains?the?basic?event?types?used?in?SimPy.

The?base?class?for?all?events?is?:class:‘Event‘.?Though?it?can?be?directly
used?there?are?several?specialized?subclasses?of?it.

..?autosummary::

????~simpy.events.Event
????~simpy.events.Timeout
????~simpy.events.Process
????~simpy.events.AnyOf
????~simpy.events.AllOf

“““
from?simpy._compat?import?PY2
from?simpy.exceptions?import?Interrupt?StopProcess

if?PY2:
????import?sys


PENDING?=?object（）
“““Unique?object?to?identify?pending?values?of?events.“““

URGENT?=?0
“““Priority?of?interrupts?and?process?initialization?events.“““
NORMAL?=?1
“““Default?priority?used?by?events.“““


class?Event（object）:
????“““An?event?that?may?happen?at?some?point?in?time.

????An?event

????-?may?happen?（:attr:‘triggered‘?is?‘‘False‘‘）
????-?is?going?to?happen?（:attr:‘triggered‘?is?‘‘True‘‘）?or
????-?has?happened?（:attr:‘processed‘?is?‘‘True‘‘）.

????Every?event?is?bound?to?an?environment?*env*?and?is?initially?not
????triggered.?Events?