simpy.util — Utility functions for SimPy

A collection of utility functions:

start_delayed(env, generator, delay)

Return a helper process that starts another process for generator after a certain delay.

simpy.util.start_delayed(env: Environment, generator: Generator[Event, Any, Any], delay: int | float) → Process

Return a helper process that starts another process for generator after a certain delay.

process() starts a process at the current simulation time. This helper allows you to start a process after a delay of delay simulation time units:

>>> from simpy import Environment
>>> from simpy.util import start_delayed
>>> def my_process(env, x):
...     print(f'{env.now}, {x}')
...     yield env.timeout(1)
...
>>> env = Environment()
>>> proc = start_delayed(env, my_process(env, 3), 5)
>>> env.run()
5, 3

Raise a ValueError if delay <= 0.