python - 如何从 Python 中的 Flask 应用程序调用某些函数？

Question

我的 myapp.py 是这样的:

from flask import Flask
from flask import request
from flask import render_template
app = Flask(__name__)

@app.route('/', methods=['GET', 'POST'])
def index():
    if request.method == 'POST':
         # do something
         # for example:
         message = 'I am from the POST method'
         f = open('somefile.out', 'w')
         print(message, f)

    return render_template('test.html', out='Hello World!')

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

我有一个简单的问题。 如何在Python中调用index()函数，只在if语句(8-13行)中执行代码？

我这样试过:

>>> import myapp
>>> myapp.index()

但我收到消息:

RuntimeError: working outside of request context

Answer 1

参见 Request Context文档；您需要显式创建上下文:

>>> ctx = myapp.app.test_request_context('/', method='POST')
>>> ctx.push()
>>> myapp.index()

您还可以将上下文用作上下文管理器(请参阅 Other Testing Tricks):

>>> with myapp.app.test_request_context('/', method='POST'):
...     myapp.index()
...