PYTHON TIME SLEEP MILLISECONDS HOW TO
PYTHON TIME SLEEP MILLISECONDS CODE

Result = system.db.runUpdateQuery(query, 'MyDBConn') Query = 'INSERT INTO tblRequest (Command, Data) VALUES('CommandedAction', 'CommandData')' PyResults = system.db.runQuery(query, 'MyDBConn')ĭiffSec = (start, ()) Query = 'SELECT IDENT_CURRENT('tblRequest ') AS reqIdent' It would look something like this: import time NOTE: This will not interact with the GUI. If I find the response I drop out of the loop. If I execeed the timeout threshold I drop out of the loop. My plan essentially is to enter a while loop conditioned on the elapsed time and the status of finding the response. I need to monitor that Response table until I see the response to my request, or I hit a timeout threshold. That equipment then responds to the request in a different table using the Request ID as a foreign key in the Response table. My case is that I post a record to a SQL table requesting some action from an OEM’s equipment. In the case of a dummy for loop, your process is actually still running on the CPU.īut in the case of Sleep(), your process will be effectively dormant for a while until the OS starts scheduling it again on the CPU.Pardon my resurrecting an old post, but I’m needing to do something similar and I’ve run into some issues.

Notice that this is completely different from adding delay using a dummy for loop that does nothing (which is something you should NEVER do). So what does an OS do when it receives a Sleep System Call?īasically what the OS will do is that it will suspend the process (your program) from being scheduled on the CPU for the time period that you specified. Here is the book that I recommend for learning about Operating Systems concepts.īut either way, you can think of a System Call as an API or an interface that the OS provides for user-space programs to interact with the OS. If you don’t know what a System Call is, then you should! Well, it is, but it is simply a wrapper around something else that is implemented by the Operating System.Īll Operating Systems have a Sleep() system call. Sleep is not actually implemented by Python. If what you are trying to do is to block a thread until a condition happens, it is much better to use wait(). The straight-forward way is to precompute the delay (in seconds) until that specific time before you call the sleep function.Īnother way is to use the event.wait function from the event module.

PYTHON TIME SLEEP MILLISECONDS HOW TO

Time.sleep(1 * 10**(-6)) Q: How to use the sleep function to sleep until a specific time?ĭepending on what you are trying to do, there are two different ways to achieve this.

The sleep function actually takes a floating point number as an argument, not an integer.Īnd that means, you can pass any fraction of a second as an argument. Frequently Asked Questions Q: How to use the sleep function to sleep for a time period that is less than a second, for example milliseconds or microseconds? You can use the sleep function in Python 2 exactly as you do in Python 2. import timeĪs you can see, the elapsed time is very close to 10 seconds which is what we expect. In the following example, I print out the elapsed time between invoking the sleep function and after it returns. Let’s say you want to use sleep to add a 10-second delay. It is really very simple and straight-forward.

PYTHON TIME SLEEP MILLISECONDS CODE

Using the sleep function in Python 2 and Python 3 is exactly the same, so you won’t need to worry about which version of Python your code is running on. Sleep takes only one argument which is the period of time in seconds that you want to sleep for. So in order to use sleep, you will need to import the time module first.

Like I mentioned, Sleep is a Python built-in function in the time module. After that I will talk more about some frequently asked questions and how the sleep function is actually implemented under the hood. If this is what you want to do, then you should use the sleep function from the time module.įirst, I will start by discussing how to use Python’s sleep function. In Python, or any other programming language, sometimes you want to add a time delay in your code before you proceed to the next section of the code.

Python time sleep milliseconds