![]() For example, while web scraping (ethically), and following the ToS of the website in question, abiding by the robots.txt file - you might very well want to delay the execution of each request so as to not overwhelm the resources of the server. ![]() In multi-threaded systems, a thread might want to wait for another thread to finish an operation, to continue working with that result.Īnother example could be lessening the strain on a server we're working with. The most common need for code delaying is when we're waiting for some other process to finish, so that we can work with the result of that process. T2 = threading.Thread(target=print_python)Īs per the above program, execution suspended for two threads at 0.6 seconds and 0.9 seconds respectively.Code Delaying (also known as sleeping) is exactly what the name implies, the delaying of code execution for some amount of time. T1 = threading.Thread(target=print_welcome) Python supports multithreading too, here’s an example of a multithreaded Python program.Ĭreate a script called multithread-demo.py: #!/usr/bin/python The output will be infinite loop till user interrupts(CTRL+C). Print "Current date & time " + time.strftime("%c") Print "!!! Hit CTRL+C to stop the program !!!" # The program will sleep for 10 seconds before updating date and time again. # The program will run infinity times on screen till user hit the CTRL+C Example 2: Delay in Python scriptĬreate a script called sleep-demo.py: #!/usr/bin/python Output: current time start: Wed May 29 16:50:48 2019Ĭurrent time end: Wed May 29 16:50:53 2019Īs per the program execution, the wait time or delay is 5 seconds. # using sleep() to pause the code execution Example 1:įollowing example program illustrates the exact usage of time sleep( ) method in the python script or function. T – Number of seconds/milliseconds execution to be suspended in python code. Since python version 3.5, the sleep function now sleeps atleast seconds eventhough if the sleep is interrupted by a signal, except incase of signal handler raises an exception via script. Note: time sleep method is part of time module/package in python 2 and python 3, so you need to import the “time” package in the respective python script or function. It accepts the argument in seconds/milli seconds.įor precise sleep times, floating point number can be provided as the argument for python time sleep() method. Python time.sleep( ): time sleep method is similar to shell sleep command. Its because of any caught signal which will terminate the sleep() following execution. The method argument can be a floating point to specify a more precise sleep time.Also note that, the actual suspension time might be less than the requested time. Sleep python method pauses/suspends the python program for certain amount of specified time.In other words, sleep method suspends the execution of the calling thread for a given number of seconds.
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