在Python中，可以使用psutil庫來管理系統進程。psutil是一個跨平臺的庫，可以方便地獲取系統進程信息、CPU和內存使用情況等。首先，確保已經安裝了psutil庫，如果沒有安裝，可以使用以下命令安裝：

pip install psutil

接下來，我將向您展示如何使用psutil庫來管理系統進程。

1. 獲取所有進程列表：

import psutil

def get_all_processes():
    processes = []
    for process in psutil.process_iter():
        processes.append(process)
    return processes

all_processes = get_all_processes()
for process in all_processes:
    print(process.pid, process.name())

2. 根據進程ID（PID）獲取進程信息：

import psutil

def get_process_info(pid):
    process = psutil.Process(pid)
    return process.as_dict(attrs=['pid', 'name', 'username', 'cpu_times', 'memory_info'])

pid = 12345
process_info = get_process_info(pid)
print(process_info)

3. 查找特定名稱的進程：

import psutil

def find_process_by_name(name):
    for process in psutil.process_iter():
        if process.name() == name:
            return process
    return None

process_name = "python"
process = find_process_by_name(process_name)
if process:
    print(f"Found process with PID {process.pid} and name {process.name()}")
else:
    print(f"Process with name {process_name} not found")

4. 殺死特定進程：

import psutil

def kill_process_by_pid(pid):
    process = psutil.Process(pid)
    if process.is_running():
        process.terminate()
        print(f"Process with PID {pid} terminated")
    else:
        print(f"Process with PID {pid} is not running")

pid = 12345
kill_process_by_pid(pid)

這些示例展示了如何使用psutil庫在Python中管理系統進程。您可以根據需要修改這些示例以滿足您的需求。