yandex.praktikum-算法 Yandex.Praktikum算法课程的实践 Python安装 安装python版本管理器 Python版本设定 # Install interpreter version pyenv install 3.7.9 # Install Separate Virtualenv pyenv virtualenv 3.7.9 yandex-praktukum-python3.7.9 # Activate pyenv activate yandex-praktukum-python3.7.9 # Install Requirement pip install