The practical method for the tone of the mission queue in Python
The practical method for the tone of the mission queue in Python
Task scheduling is a commonly used technology in computer programs and is used to perform various tasks according to the plan.In Python, there are many types of libraries that can help achieve the function of task scheduling. Among them, the "Schedule" class library is a very practical choice.This article will introduce how to use the "Schedule" class library to achieve the task queue scheduling and provide relevant code and configuration instructions.
1. Install the 'SCHEDULE' library
Before using the 'Schedule' library, you need to install it first.You can run the following commands in the command line to install the 'schedule' library:
pip install schedule
2. Create a task function
The task function is a task that requires regular execution.You can write your own task function according to actual needs.The following is an example task function, which will print a message:
python
def my_task():
Print ("Mission is under execution ...")
3. Create a scheduler
Using the 'SCHEDULE' library requires creating a scheduler instance.The scheduler will perform the task based on the scheduled timetable.You can use `schedule.scheduler ()` to create a scheduler instance:
python
import schedule
scheduler = schedule.Scheduler()
4. Define task scheduling
Next, we can use the scheduler method to define task scheduling.The 'Schedule' library provides various methods to define different types of task scheduling.Here are some commonly used methods:
-` Every (interval) .seconds.do (task) `: execute the task every time in a certain period of time.
-` Every (interval) .minutes.do (task) `: execute the task every time in a certain period of time.
-` Every (interval). Hours.do (task) `: The task is performed at a certain period of time.
-`every (). Day.at (time) .do (task)`: execute tasks at the specified time every day.
-`event (). Monday.do (task)`: execute the task every Monday.
-`event (). Wednesday.at (time) .do (task)`: Specify the task at the specified time every Wednesday.
The following is an example. The task function `my_task` is executed every 5 seconds every 5 seconds:
python
scheduler.every(5).seconds.do(my_task)
5. Start scheduler
Finally, we need to start the scheduler to start the task.You can use the `run_pending () method to run the task in waiting.The following is an example:
python
while True:
scheduler.run_pending()
The complete code is shown below:
python
import schedule
def my_task():
Print ("Mission is under execution ...")
scheduler = schedule.Scheduler()
scheduler.every(5).seconds.do(my_task)
while True:
scheduler.run_pending()
Run the above code, the task function `my_task` will execute every 5 seconds and print a message.
By using the "Schedule" class library, we can easily implement the mission queue tone function, so as to achieve various tasks as planned.Custom task functions and scheduling rules can be customized according to actual needs to meet specific application scenarios.
Summarize:
This article introduces a practical method of using the "Schedule 'class library in Python to implement the mission queue tone.We have learned how to install the 'Schedule' library, create task functions, create a scheduler, define task scheduling, and start the scheduler to perform tasks.Through these steps, we can easily implement the function of performing tasks as planned.
