烧瓶多处理 [英] Flask Multiprocessing
问题描述
我正在尝试开发一个小型应用程序，该应用程序基本上将根据用户提供或请求的数据集绘制一些图形. process_order函数应同时运行不同的数据集.由于某种原因，我只能得到第一个图形，而不能得到第二个和连续的图形.我打开了一个不同的浏览器会话，不同的用户得到了相同的结果.
I am trying to develop a small app which will basically plot some graphs based on set of data user provided or requested. The process_order function should be run concurrent different set of data. For some reason I get only the first graph not the second and successive one. I have opened a different browser session with different user got the same result.
示例我试图从IE打开一个浏览器，然后从Chrome打开另一个浏览器，并以IE(具有5个输入集)身份作为用户1登录-在IE中(预期5个图形)，以及以具有20个输入的user2身份登录-在Chrome中(预期20个)图形)我期望2个浏览器窗口包含一个窗口中的5个图形和第二个窗口中的20个图形:
Example I tried to open a browser one from IE and another one from Chrome with logged in as user1 with set of 5 inputs - in IE (Expected 5 graphs) and as user2 with set of 20 input - in Chrome (Expected 20 Graphs) I was expecting 2 browser window with 5 graphs from one and 20 graphs from second window:
如果它已经在不同的问题中问过/回答过，我对python和flask的道歉还是陌生的
I am new to python and flask apologies if its something have already asked/answered in different questions
app = Flask(__name__)
plot = None
my_session = None
session_id = None
@app.route('/')
def home():
if not session.get('logged_in'):
return render_template('login.html')
else:
return render_template('template.html')
@app.route('/login', methods=['POST'])
def do_admin_login():
if request.form['password'] == 'password' and request.form['username'] in 'admin' :
session['logged_in'] = True
my_session = Bot(request.form['username'])
my_session.session_id = request.form['username']
session['user'] = request.form['username']
return render_template('template.html')
else:
flash('wrong password!')
return home()
@app.route("/ask", methods=['POST','GET'])
def ask():
string = str(request.form['message'])
res = my_session.process(string)
return jsonify({'status':'OK','answer':bot_res})
class Bot():
#Define user level
def __init__(self,session_id):
self.return_string = ""
self.session_id = session_id
def process(self, string):
self.session_id = session['user']
self.string = string
self.return_string = self.process_order() # This method I would like to execute as concurrent at the same time for multiple users/session with different set ot data
return self.return_string
def process_order(self):
self.plot = Plot()
self.plot.global_url = range(5)
self.i = 0
self.inputs = [] #tuples
self.number = range(5)
self.url_values = zip(self.number,self.inputs)
self.pool = Pool()
self.func = partial(self.plot.do_plot,self.var1)
self.pool.map(self.func,self.url_values)
self.pool.close()
self.pool.join()
process_confirmation = "Your request is complete"
return process_confirmation
class Plot():
def __init__(self):
pass
def do_plot(self, var1):
self.number, self.url = plot_values
self.var1 = var1
fig = plt.figure(self.number)
self.line = str(self.url[1])
self.res = urllib.request.urlopen(self.line)
plt.imshow(plt.imread(self.res))
self.file_name = "%03d.png"%(self.number,)
plt.savefig(self.file_name)
plt.close()
if __name__ == "__main__":
session_id = None
app.secret_key = os.urandom(12)
my_session = Bot(session_id)
app.run(host='0.0.0.0', port=80)
推荐答案
如果您遇到的问题是单个请求需要很长时间，那么您的问题可能出在使用内置的flasks服务器上.
If the problem you are having is that individual requests take a long time, then your problem might stem from using flasks builtin server.
您可以尝试使用gevent部署应用程序: http://flask.pocoo.org/docs/1.0/deploying /wsgi-standalone/#gevent
You can try deploying your app with gevent: http://flask.pocoo.org/docs/1.0/deploying/wsgi-standalone/#gevent
这篇关于烧瓶多处理的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
