python 如何通过执行脚本安装库或卸载库

import subprocess
import sys
def install_package(package):
    try:
        # 检查库是否已安装
        subprocess.check_call([sys.executable, '-m', 'pip', 'show', package], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        print(f"{package} 已安装，无需操作。")
    except subprocess.CalledProcessError:
        print(f"正在安装 {package}...")
        subprocess.check_call([sys.executable, '-m', 'pip', 'install', package])
        print(f"{package} 安装成功。")
def uninstall_package(package):
    try:
        # 检查库是否已安装
        subprocess.check_call([sys.executable, '-m', 'pip', 'show', package], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        print(f"正在卸载 {package}...")
        subprocess.check_call([sys.executable, '-m', 'pip', 'uninstall', package, '-y'])
        print(f"{package} 卸载成功。")
    except subprocess.CalledProcessError:
        print(f"{package} 未安装，无需卸载。")
if __name__ == '__main__':
    # 要安装的库列表
    packages_to_install = ['openpyxl==3.1.3', 'xlrd', 'xlwt']
    # 安装库
    for package in packages_to_install:
        install_package(package)
    print("所有库安装完成。")
    # 要卸载的库列表
    # packages_to_uninstall = ['openpyxl', 'xlrd', 'xlwt']
    #
    # # 安装库
    # for package in packages_to_uninstall:
    #     uninstall_package(package)
    #
    # print("所有库卸载完成。")