#获取微信access_token
def get_token():
  payload_access_token={
    'grant_type':'client_credential',
    'appid':'xxxxxxxxxxxxx',
    'secret':'xxxxxxxxxxxxx'
  }
  token_url='https://api.weixin.qq.com/cgi-bin/token'
  r=requests.get(token_url,params=payload_access_token)
  dict_result= (r.json())
  return dict_result['access_token']

#获取上传文件的media_ID
#群发图片的时候，必须使用该api提供的media_ID
def get_media_ID(path):
  img_url='https://api.weixin.qq.com/cgi-bin/material/add_material'
  payload_img={
    'access_token':get_token(),
    'type':'image'
  }
  data ={'media':open(path,'rb')}
  r=requests.post(url=img_url,params=payload_img,files=data)
  dict =r.json()
  return dict['media_id']

#查询所有用户分组信息
def get_group_id():
  url="https://api.weixin.qq.com/cgi-bin/groups/get"
  payload_id={
    'access_token':get_token()
  }
  r=requests.get(url=url,params=payload_id)
  result=r.json()
  return result['groups']

#返回第一个有效的group 分组id
def get_first_group_id():
  groups =get_group_id()
  group_id =0
  for group in groups:
    if(group['count']!=0):
      group_id=group['id']
      break;
  return group_id

def send_txt_to_first_group(str='Hello World!'):
  group_id =get_first_group_id()
  pay_send_all={
    "filter":{
      "is_to_all":False,
      "group_id":group_id
    },
    "text":{
      "content":str
    },
    "msgtype":"text"
  }
  url="https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token="+get_token()
  #需要指定json编码的时候不会对中文转码为unicode，否则群发的消息会显示为unicode码,不能正确显示
  r=requests.post(url=url,data=json.dumps(pay_send_all,ensure_ascii=False,indent=2))#此处的必须指定此参数
  result=r.json()
  #根据返回码的内容是否为０判断是否成功
  return result['errcode']==0

def send_img_to_first_group(path='/home/fit/Desktop/test.jpg'):
  group_id =get_first_group_id()
  pay_send_all={
    "filter":{
      "is_to_all":False,
      "group_id":group_id
    },
    "image":{
      "media_id":get_media_ID(path)
    },
    "msgtype":"image"
  }
  url="https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token="+get_token()
  r=requests.post(url=url,data=json.dumps(pay_send_all))
  result=r.json()
  #根据返回码的内容是否为０判断是否成功
  return result['errcode']==0

# -*- coding: utf-8 -*-
import requests
#首先获取access_token
import json
#获取微信access_token
def get_token():
  payload_access_token={
    'grant_type':'client_credential',
    'appid':'xxxxxxxxxx',
    'secret':'xxxxxxxxx'
  }
  token_url='https://api.weixin.qq.com/cgi-bin/token'
  r=requests.get(token_url,params=payload_access_token)
  dict_result= (r.json())
  return dict_result['access_token']
#获取上传文件的media_ID
#群发图片的时候，必须使用该api提供的media_ID
def get_media_ID(path):
  img_url='https://api.weixin.qq.com/cgi-bin/material/add_material'
  payload_img={
    'access_token':get_token(),
    'type':'image'
  }
  data ={'media':open(path,'rb')}
  r=requests.post(url=img_url,params=payload_img,files=data)
  dict =r.json()
  return dict['media_id']
#查询所有用户分组信息
def get_group_id():
  url="https://api.weixin.qq.com/cgi-bin/groups/get"
  payload_id={
    'access_token':get_token()
  }
  r=requests.get(url=url,params=payload_id)
  result=r.json()
  return result['groups']
#返回第一个有效的group 分组id
def get_first_group_id():
  groups =get_group_id()
  group_id =0
  for group in groups:
    if(group['count']!=0):
      group_id=group['id']
      break;
  return group_id
def send_img_to_first_group(path='/home/fit/Desktop/test.jpg'):
  group_id =get_first_group_id()
  pay_send_all={
    "filter":{
      "is_to_all":False,
      "group_id":group_id
    },
    "image":{
      "media_id":get_media_ID(path)
    },
    "msgtype":"image"
  }
  url="https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token="+get_token()
  r=requests.post(url=url,data=json.dumps(pay_send_all))
  result=r.json()
  print result
  #根据返回码的内容是否为０判断是否成功
  return result['errcode']==0
def send_txt_to_first_group(str='Hello World!'):
  group_id =get_first_group_id()
  pay_send_all={
    "filter":{
      "is_to_all":False,
      "group_id":group_id
    },
    "text":{
      "content":str
    },
    "msgtype":"text"
  }
  url="https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token="+get_token()
  #需要指定json编码的时候不会对中文转码为unicode，否则群发的消息会显示为unicode码,不能正确显示
  r=requests.post(url=url,data=json.dumps(pay_send_all,ensure_ascii=False,indent=2))#此处的必须指定此参数
  result=r.json()
  #根据返回码的内容是否为０判断是否成功
  return result['errcode']==0
if(send_txt_to_first_group("祝你合家欢乐，幸福美满！")):
  print 'success!'
else:
  print 'fail!'

{u'errcode': 45028, u'errmsg': u'has no masssend quota hint: [OKvFdA0813ge12]'}