from blynktimer import Timer
blynk_timer = Timer()

# run once timer that will fire after 1 sec   
@blynk_timer.register(interval=1, run_once=True)
def your_run_once_function():
    print('Hello, World!')

# periodical timer that will fire each 5 sec
# run_once flag by default is False
@blynk_timer.register(interval=5)
def your_periodical_function():
    print('Hello, Blynkers!')

while True:
    blynk_timer.run()
        

import time
from blynktimer import Timer

# disable exception raise if all all timers were stopped
blynk_timer = Timer(no_timers_err=False)


# register two timers for single function with different function parameters
@blynk_timer.register('p1', 'p2', c=1, interval=2, run_once=True)
@blynk_timer.register('fp1', 'fp2', interval=3, run_once=False)
def function1(a, b, c=2):
    time.sleep(c)
    print('Function params: {} {} {}'.format(a, b, c))


# simple function registration for further stop
# interval default = 10 sec
# run_once default is False
@blynk_timer.register()
def function2():
    print('Function2')


# list available timers
print(blynk_timer.get_timers())

# switch timer state to stopped by timer id
# id = order_num + '_' + function_name
# OR: on ports with low memory (such as the esp8266)
# id = order_num + '_' + 'timer'
blynk_timer.stop('2_function2')


while True:
    intervals = blynk_timer.run()
    # print real passed time for timer fired events
    # maybe needed for debug
    if any(intervals):
        print(intervals)