Python自动化下载模块

# @Author : 北山啦
# @Time : 2021/1/29 13:56
# @Blog:https://blog.csdn.net/qq_45176548/article/details/111601730
import os

class PackageInstaller(object):
    def __init__(self):
        pass

    def install_package(self, package_name):
        os.system("pip3 install -i https://pypi.doubanio.com/simple/%s" % package_name)

    def install_3rd_package(self):
        self.install_package("requests")
        self.install_package("numpy")
        self.install_package("selenium")
        self.install_package("sklearn")
        self.install_package("pyserial")
        self.install_package("pymysql")
        self.install_package("MySQLdb")
        self.install_package("mongodb")
        self.install_package("redis")

if __name__ == '__main__':
    m_obj = PackageInstaller() # 实例化一个对象
    m_obj.install_3rd_package() # 该对象调用install_3rd_package函数
    os.system("pause") # 暂停并查看执行结果避免直接关闭

pip install -r requirements.txt

pip freeze > requirements.txt

pip install pipreqs
pipreqs ./

pipreqs ./ --enconding=utf-8