run a method every N time in python

python run function at specific time
python run function every hour
python loop time interval
time.sleep python
how to call a function repeatedly in python
python run loop on timer
python event scheduler
python run function after time

I tried to print a sentence every 5 second and i need to pass an argument to it.

I am using threading

import threading

def printit(whatever):
  threading.Timer(5.0, printit).start()
  print(whatever)

var= "start"
printit(var)

which gives me this error

C:\Users\Wei Xi\Desktop>python test.py
start
Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Users\Wei Xi\AppData\Local\Programs\Python\Python38\lib\threading.py", line 932, in _bootstrap_inner
    self.run()
  File "C:\Users\Wei Xi\AppData\Local\Programs\Python\Python38\lib\threading.py", line 1254, in run
    self.function(*self.args, **self.kwargs)
TypeError: printit() missing 1 required positional argument: 'whatever'```

threading.Timer constructor accepts args and keyword arguments kwargs for respective target function (class threading.Timer(interval, function, args=None, kwargs=None)):

import threading

def printit(whatever):
  threading.Timer(5.0, printit, args=(whatever,)).start()
  print(whatever)

var= "start"
printit(var)

Sample output will be (in "infinite" printing):

start
start
start
start
...

An elegant way to run periodic tasks in python, Every engineer would have used it in one way or the other, to schedule With python, there are several ways of creating and executing a periodic task. One could run a simple loop with whatever duration you want in time.sleep. With this approach, if the program is killed in between, the function foo()  Write a program to get execution time (in seconds) for a Python method. Sample Solution:- Python Code: import time def sum_of_n_numbers(n): start_time = time.time() s = 0 for i in range(1,n+1): s = s + i end_time = time.time() return s,end_time-start_time n = 5 print(" Time to sum of 1 to ",n," and required time to calculate is :",sum_of_n_numbers(n)) Sample Output:

This is one of the possible solution:

import threading

def printit(whatever): 
    print(whatever)
    threading.Timer(5.0, printit, {whatever}).start() 

var = "start" 
printit(var)

You're getting the error because you didn't passed in whatever (the function parameter) when you recursively call your printit function.

EDIT:

However, this solution will spawn an infinite amount of threads. If you wanted to run the process as a background task, you could just use one thread by doing this.

Note: I uses 2 argument for this example.

import time
import threading


def printit(whatever, whatever2, seconds=5):
    while True:
        print(whatever)
        print(whatever2)
        time.sleep(seconds)

var = "start"
var2 = "end"

threading.Thread(target=printit, kwargs={"whatever":var, "whatever2":var2, "seconds":5}).start() 

print("Do something else")

Output:

start
end
Do something else
start
end
start
end
... (repeat start end every 5 seconds)

What is the best way to repeatedly execute a function every x , The best way to repeatedly execute a function every x seconds in Python is to just lock your time loop to the system clock. Easy. import time. Starts the interval and lets it run. """ if self. running: # Don't start if we're running! return # Create the timer object, start and set state. self. _timer = Timer (self. interval, self) self. _timer. start self. running = True: def stop (self): """ Cancel the interval (no more function calls). """ if self. _timer: self. _timer. cancel self. running = False: self. _timer = None

You can use the time.sleep() function inside a while loop:

import time

def printit(whatever, seconds=5):
    while True:
        print(whatever)
        time.sleep(seconds)

var= "start"
printit(var) # prints "start" every 5 seconds
#start

#start

#start

Python 3.4: Execute function every five seconds, Python 3.4: Execute function every five seconds · Share via It's very useful if you're able to run a specific function every n seconds, or maybe after a couple minutes, or even every few hours. Timer(5.0, run_check).start(). Automating Python Script to Run at Specific Time Every Day using Windows Task Scheduler. First, write your python script and save it with a .py extension. The script we are using here is for copying a file from one folder to another folder using python. You can check that script here.

you can use time:

def printit(str_):
   time.sleep(5)
   print(str_)

var = "start"
while True:
     printit(var)

Run a function every n seconds using Python threading. · GitHub, Run a function every n seconds using Python threading. interval.py. from threading import Timer. from functools import partial. class Interval(object):. Time module in Python provides various time-related functions. This module comes under Python’s standard utility modules. time.time () method of Time module is used to get the time in seconds since epoch. The handling of leap seconds is platform dependent.

call function every 5 seconds in python, Code in Python to call a function every 5 seconds. Like and share. It's FREE too :) Download Duration: 0:51 Posted: Jul 12, 2018 Schedule lets you run Python functions (or any other callable) periodically at pre-determined intervals using a simple, human-friendly syntax. Schedule Library is used to schedule a task at a particular time every day or a particular day of a week.

How could I repeat a function every 5 minutes in python without , Here's an example of a Python thread which wakes up every so often and does every 5 minutes in python without affecting the rest of the code (Using time.sleep​() Is there a way to call a function in python, but replace the name of a function​  In this step-by-step tutorial, you'll learn how to use Python timer functions to monitor how fast your programs are running. You'll use classes, context managers, and decorators to measure your program's running time. You'll learn the benefits of each method and which to use given the situation.

Run certain code every n seconds, What is the best way to repeatedly execute a function every x seconds in Python? 13 answers. Is there a way to, for example, print Hello World! every n seconds? One could run a simple loop with whatever duration you want in time.sleep With this approach, if the program is killed in between, the function foo () would be killed abruptly. Also if you want to

Comments
  • Is it intentional to have the same name for the outer function and the callable passed to to threading.Timer()?
  • Which is a close friend of a fork bomb.
  • cool bro, what if i want to pass several arguments? def printit(args1,args2,args3),should i do threading.Timer(5.0, printit, {args1,args2,args3}).start() ?
  • Yes, but do note that this way of doing things, you're essentially spawning threads infinitely, which can be resource intensive. The other solution that uses a for loop with time.sleep might be a better solution if spawning threads is not what you intended to do.
  • I believe the reason you use thread is because you wanted to perform the printit function every 5 seconds, running at the background and not spawning infinite threads. If that is the case, there's a better solution than this. I will update my answer to include this.
  • TypeError: must be str, not NoneType