如何從 Flask 中運行 python 腳本

Question

我有一個Flask腳本，它創建一個網站並動態打印一些數據。 - 它打印的數據應該來自另一個 python 腳本。

我目前面臨的問題是，如果我將執行 python 腳本的行放在執行Flask應用程序的行之前，它將運行 Python 腳本而不運行Flask ； 反之亦然。

蟒蛇腳本：

import websocket
from bitmex_websocket import Instrument
from bitmex_websocket.constants import InstrumentChannels
from bitmex_websocket.constants import Channels
import json

websocket.enableTrace(True)

sells = 0
buys = 0


channels = [
    InstrumentChannels.trade,
]


XBTUSD = Instrument(symbol='XBTUSD',
                    channels=channels)
XBTUSD.on('action', lambda msg: test(msg))


def test(msg):
    parsed = json.loads(json.dumps(msg))


    print(parsed)

XBTUSD.run_forever()

Flask 腳本（注意：價格應該是從另一個腳本中“解析”出來的變量）：

# Start with a basic flask app webpage.
from flask_socketio import SocketIO, emit
from flask import Flask, render_template, url_for, copy_current_request_context
from random import random
from time import sleep
from threading import Thread, Event
import requests, json
import time

__author__ = 'slynn'

app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
app.config['DEBUG'] = True

#turn the flask app into a socketio app
socketio = SocketIO(app)

#random number Generator Thread
thread = Thread()
thread_stop_event = Event()

class RandomThread(Thread):
    def __init__(self):
        self.delay = 1
        super(RandomThread, self).__init__()

    def randomNumberGenerator(self):
        while not thread_stop_event.isSet():
            socketio.emit('newnumber', {'number': parsed}, namespace='/test')
            sleep(self.delay)

    def run(self):
        self.randomNumberGenerator()


@app.route('/')
def index():
    #only by sending this page first will the client be connected to the socketio instance
    return render_template('index.html')

@socketio.on('connect', namespace='/test')
def test_connect():
    # need visibility of the global thread object
    global thread
    print('Client connected')

    #Start the random number generator thread only if the thread has not been started before.
    if not thread.isAlive():
        print("Starting Thread")
        thread = RandomThread()
        thread.start()

@socketio.on('disconnect', namespace='/test')
def test_disconnect():
    print('Client disconnected')


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

Answer 1

使用import ：

• 將 python 腳本（例如website_generator.py ）生成的內容包裝到一個函數中。
• 將它放在與app.py或flask.py相同的目錄中。
• 在flask.py使用from website_generator import function_name
• 使用function_name()運行它

您可以使用其他函數，例如subprocess.call等； 雖然他們可能不會給你答復。

使用import示例：

from flask import Flask
import your_module # this will be your file name; minus the `.py`

app = Flask(__name__)

@app.route('/')
def dynamic_page():
    return your_module.your_function_in_the_module()

if __name__ == '__main__':
    app.run(host='0.0.0.0', port='8000', debug=True)

Answer 2

嘗試這個：

from flask import Flask

app = Flask(__name__)

@app.route('/')
def run_script():
    file = open(r'/path/to/your/file.py', 'r').read()
    return exec(file)

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