22.executor service Flask

pip包管理器没有npm那么强大不支持 npm --save install 这样的方法

但是我们有别的方法

安装Flask

但是呢

我们不能把它存放在package .json

那就需要我们自己装就很烦

不如我们

npm --save install方便

我们自己来实现

我们即将我们的依赖关系写入一个文件

然后我们用 pip install -r +文件名

来执行文件

然后我们

The directory '/home/han/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/han/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already satisfied: Flask in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 1))
Requirement already satisfied: Werkzeug>=0.14 in /usr/local/lib/python2.7/dist-packages (from Flask->-r requirements.txt (line 1))
Requirement already satisfied: click>=5.1 in /usr/local/lib/python2.7/dist-packages (from Flask->-r requirements.txt (line 1))
Requirement already satisfied: Jinja2>=2.10 in /usr/local/lib/python2.7/dist-packages (from Flask->-r requirements.txt (line 1))
Requirement already satisfied: itsdangerous>=0.24 in /usr/local/lib/python2.7/dist-packages (from Flask->-r requirements.txt (line 1))
Requirement already satisfied: MarkupSafe>=0.23 in /usr/local/lib/python2.7/dist-packages (from Jinja2>=2.10->Flask->-r requirements.txt (line 1))