old_contents: # -*- coding: utf-8 -*-
  # http://google-styleguide.googlecode.com/svn/trunk/pyguide.html
  
  import requests as req
  import traceback
  from flask import request
  
  
  class Mail(object):
  
      API_URL = 'https://api.mailgun.net/v3/{domain}/messages'
  
  
      def ___init__(self, app):
          """Initialization of app
          :param app: {Flask}
          """
          if app:
              self.init_app(app)
  
  
      def init_app(self, app):
          """Initialization of app
          :param app: {Flask}
          """
          self.app = app
          self.domain = app.config.get('MAILGUN_DOMAIN')
          self.api_key = app.config.get('MAILGUN_API_KEY')
  
  
      def send(self, from_address, to_addresses, subject, body, html=False):
          """Sending email
          :param from_address: {str} respondent email address
          :param to_addresses: {str} emails of destination users
          :param subject: {str} subject of email
          :param body: {str} body of email
          :param html: {bool} if email is plain text or html
          :return: {bool} has benn successfull or not
          """
          assert self.domain is not None, "Missing Mailgun domain."
          assert self.api_key is not None, "Missing Mailgun API KEY"
  
          res = None
          payload = {
              'from': from_address,
              'to': to_addresses,
              'subject': subject
          }
          payload['html' if html else 'text'] = body
  
          try:
              response = req.post(self.API_URL.format(domain=self.domain),
                                  auth=('api', self.api_key),
                                  data=payload,
                                  timeout=10)
              response.raise_for_status()
          except Exception:
              self.app.logger.error(traceback.format_exc())
  
          return res.status_code == 200 if res else False
  
new_contents: # -*- coding: utf-8 -*-
  # http://google-styleguide.googlecode.com/svn/trunk/pyguide.html
  
  import requests as req
  import traceback
  from flask import request
  
  
  class Mail(object):
  
      API_URL = 'https://api.mailgun.net/v3/{domain}/messages'
  
  
      def ___init__(self, app):
          """Initialization of app
          :param app: {Flask}
          """
          if app:
              self.init_app(app)
  
  
      def init_app(self, app):
          """Initialization of app
          :param app: {Flask}
          """
          self.app = app
          self.domain = app.config.get('MAILGUN_DOMAIN')
          self.api_key = app.config.get('MAILGUN_API_KEY')
  
  
      def send(self, from_address, to_addresses, subject, body, html=False):
          """Sending email
          :param from_address: {str} respondent email address
          :param to_addresses: {str} emails of destination users
          :param subject: {str} subject of email
          :param body: {str} body of email
          :param html: {bool} if email is plain text or html
          :return: {bool} has benn successfull or not
          """
          if self.app.config('TESTING', False):
              return
  
          assert self.domain is not None, "Missing Mailgun domain."
          assert self.api_key is not None, "Missing Mailgun API KEY"
  
          res = None
          payload = {
              'from': from_address,
              'to': to_addresses,
              'subject': subject
          }
          payload['html' if html else 'text'] = body
  
          try:
              response = req.post(self.API_URL.format(domain=self.domain),
                                  auth=('api', self.api_key),
                                  data=payload,
                                  timeout=10)
              response.raise_for_status()
          except Exception:
              self.app.logger.error(traceback.format_exc())
  
          return res.status_code == 200 if res else False
  
subject: disable ability to send email in testing environment