Delayed call answer

from plivo import plivoxml

response = (plivoxml.ResponseElement()
            .add(plivoxml.WaitElement(None)
                 .set_length(10)).add(plivoxml.SpeakElement('Hello')))
print(response.to_string())

from flask import Flask, Response, request
import plivoxml

app=Flask(__name__)

@app.route('/wait/delayed_answer/', methods=['GET','POST'])
def delayed_answer():
	response = plivoxml.Response()
	params = {
		'length' : "10"
	}
	response.addWait(**params)
	response.addSpeak("Hello")
	return Response(str(response), mimetype='text/xml')



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

# Sample Conference XML
# <Response>
#	<Wait length="10"/>
#	<Speak>Hello</Speak>
# </Response>