用于检查模块是否存在的python脚本，否则安装模块

import importlib

def check_and_install_module(module_name):
    try:
        importlib.import_module(module_name)
        print(f"The module '{module_name}' is already installed.")
    except ImportError:
        print(f"The module '{module_name}' is not installed. Installing...")
        install_module(module_name)

def install_module(module_name):
    try:
        import subprocess
        subprocess.check_call(["pip", "install", module_name])
        print(f"The module '{module_name}' has been successfully installed.")
    except Exception as e:
        print(f"Failed to install the module '{module_name}'. Error: {str(e)}")

# 调用示例
check_and_install_module("numpy")