pycharm 导入新项目
使用venvnn nn1.创建venvnnprefences->project->project interpreter->show all->addnn2.设置python源nnbuild->console->python iterpreter
使用venvnn nn1.创建venvnnprefences->project->project interpreter->show all->addnn2.设置python源nnbuild->console->python iterpreter