Overview¶
zsv.ticker enables flexible and idiomatic regular execution of tasks:
from zsv.ticker import Ticker
ticker = Ticker()
ticker.start(5)
while ticker.tick():
execute_task()
Ticker aims to be more idiomatic and easy to use than a time calculation and
sleep call, and further enables the instantaneous termination of a waiting
task:
import signal
from time import sleep
from zsv.ticker import Ticker
ticker = Ticker()
ticker.start(5)
def abort(signum, frame):
ticker.stop()
signal.signal(signal.SIGINT, abort)
while ticker.tick():
print("tick")
sleep(2)
print("tock")
The above script wraps a stop call in a signal handler registered to SIGINT: hitting Ctrl+C after the script prints “tick” but before it prints “tock” will yield a final “tock” before it terminates.
Index¶
-
class
Ticker[source]¶ Delivery of ticks at intervals.
Once started the Ticker will periodically make a boolean “tick” of True available through the tick method. Uncollected ticks will not stack or queue up, and the Ticker will continue to tick regardless. When stopped tick will return False, and any uncollected tick will be lost.
Example:
ticker = Ticker() ticker.start(5) while ticker.tick(): execute_task()