通過(guò)pip install?flask? ?安裝?flask

創(chuàng)建一個(gè)hello.py文件

在終端或者cmd輸入

????????????????set FLASK_APP=hello.py

????????????????flask run

返回???

?????* Serving Flask app "hello.py"

?????* Environment: production

????? ?WARNING: This is a development server. Do not use it in a production deployment.

????? ?Use a production WSGI server instead.

?????* Debug mode: off

?????* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

在瀏覽器打開(kāi)http://127.0.0.1:5000/

return 可以返回字符串或者字典

route()?裝飾器來(lái)把函數(shù)綁定到 URL

工廠(chǎng)模式?https://flask.palletsprojects.com/en/1.1.x/tutorial/factory/

在當(dāng)前文件夾創(chuàng)建文件?flaskr/__init__.py

在終端執(zhí)行

set FLASK_APP=flaskr

set FLASK_ENV=development

flask run

在工廠(chǎng)模式下， 修改?保存__init__?不需要重新執(zhí)行flask run?