两种运行flask的方法

方法1: 官网例子，flask运行

from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "
Hello, World!
"

保存成hello.py

$ export FLASK_APP=hello
$ flask run
 * Running on http://127.0.0.1:5000/

方法2: python运行

from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "
Hello, World!
"

if __name__ == "__main__":
	app.run()

保存成hello.py

$ python hello.py