How to introduce and use the PStuil class library in python

PSTUIL is a Python library used to retrieve process information during operation and the management process.It provides a simple and intuitive interface that allows you to obtain information about the processes in the system and can perform some basic process management operations.PSTUIL provides cross -platform support that can run on different operating systems. The following functions can be implemented using PSTUIL: 1. Get the process list: You can use the `psutil.process_iter ()` function to obtain a list of all running processes in the system.By traversing this list, you can get detailed information of each process, such as process ID (PID), process name, execution path, parent process ID, etc. 2. Details of the process: For specific processes, you can use the `PSUTIL.PROCESS (PID) function to create a process object, and then you can obtain the detailed information of the process through this object, such as CPU usage, memory usage, use conditions, use conditions, use conditions, use conditions, use conditions, use conditions, use conditions, use conditions, and use conditions, use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions, and use conditions.Create time, etc. 3. Process management operation: PSTUIL also provides some process management functions, such as killing processes, starting new processes, etc.Use the `Process.kill () method to kill the specified process, and use the method of` subprocess.popen () `to start a new process. The following is an example program that demonstrates how to use the PStuil library to obtain the list of all processes in the system, and output the PID and process name of each process: python import psutil # Get all the list lists processes = psutil.process_iter() # Traversing process list, output PID and process name of each process for process in processes: try: process_info = process.as_dict(attrs=['pid', 'name']) print(f"PID: {process_info['pid']}, Process Name: {process_info['name']}") except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess): pass In the above example, we first introduced the `psutil` library, and then use the` psutil.process_iter () `function to obtain the list of all processes in the system.Next, we traversed the process list and used the `AS_DICT () method to obtain the PID and process names of each process, and output through the` Print () `function. It should be noted that because certain processes may be exited or refused to be accessed by another process, they may throw out abnormalities such as `noSuchProcess`,` Accessdenied` or `zombieProcess`.The above example code uses the `Try-EXCEPT` statement to deal with these abnormalities, and you can handle the abnormality according to your needs. Before starting to use PStuil, you need to install it.You can use the following command to install PSUTIL: pip install psutil After the installation is complete, you can import the `PSUTIL` Library in your Python program and start using it. In summary, PSTUIL is a very useful Python library that can help you get detailed information on the process of running in the system and perform some basic process management operations.Regardless of the process of running in the monitoring system or process management, PSTUIL provides simple and powerful functions, making processing process information more convenient.