Python自动化实战:定时抓取天气与微博热搜并推送至微信
本文介绍如何使用Python结合Selenium和Requests库,动态渲染并爬取中国天气网实时数据及微博热搜榜。通过win32gui模拟键鼠操作,实现指定时间自动向微信好友发送天气详情与热榜信息,并支持打包为exe文件运行。
一、系统环境
1.python 3.8.2
2.webdriver(用于驱动edge)
3.微信电脑版
4.windows10
二、爬取中国天气网
由于中国天气网采用动态页面生成技术,直接抓取无法获取完整数据。因此,需借助webdriver驱动浏览器打开网页,等待页面渲染完成后保存源代码,再利用beautifulsoup解析提取数据。需要获取的八项关键数据包括:实时温度、最高与最低温度、污染状况、风向与湿度、紫外线指数以及穿衣指南。
def getZZWeatherAndSendMsg():
HTML1='http://www.weather.com.cn/weather1dn/101190201.shtml'
driver=webdriver.Edge()
driver.get(HTML1)
soup=BeautifulSoup(driver.page_source,'html5lib')
#获取实时温度
tem=soup.find('span',class_='temp').string
#获取最高温度与最低温度
maxtem=soup.find('span',id='maxTemp').string
mintem=soup.find('span',id='minTemp').string
#获取污染状况
poll=soup.find('a',href='http://www.weather.com.cn/air/?city=101190201').string
#获取风向和湿度
win=soup.find('span',id='wind').string
humidity=soup.find('span',id='humidity').string
#获取紫外线状况
sun=soup.find('div',class_='lv').find('em').string
#获取穿衣指南
cloth=soup.find('dl',id='cy').find('dd').string
HTML2='http://www.weather.com.cn/weathern/101190201.shtml'
driver.get(HTML2)
soup=BeautifulSoup(driver.page_source,'html5lib')
#获取天气情况
wea=soup.find_all('p',class_='weather-info')[1].string
weatherContent='实时温度:'+tem+'℃'+'\n'+'今日温度变化:'+mintem+'~'+maxtem+'\n'+'今日天气:'+wea+'\n'+'当前风向:'+win+'\n'+'相对湿度:'+humidity+'\n'+'紫外线:'+sun+'\n'+'污染指数:'+poll+'\n'+'穿衣指南:'+cloth+'\n'+'注意天气变化!!'
driver.quit()
return weatherContent
三、爬取微博热搜
相比天气网,微博热搜的抓取更为直接。通过requests库获取数据包,使用beautifulsoup进行解析。解析完成后,利用for循环遍历前50条数据并保存为文本格式。
def getWeibo():
url='https://s.weibo.com/top/summary'
headers={'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.72 Safari/537.36 Edg/90.0.818.41'}
r=requests.get(url,headers=headers)
r.raise_for_status()
r.encoding = r.apparent_encoding
soup = BeautifulSoup(r.text, "html.parser")
tr=soup.find_all('tr')
weiboContent='今日微博热榜:'+'\n'
for i in range(2,52):
text=tr[i].find('td',class_='td-02').find('a').string
weiboContent=weiboContent+str(i-1)+'"'+text+'"'+'\n'
return weiboContent
四、微信自动发送消息
利用win32gui库实现微信消息的自动化发送。首先通过窗口名称定位微信句柄,随后模拟键鼠操作进行搜索联系人、打开聊天窗口、发送消息及关闭窗口等步骤。若需发送给多个联系人,只需重复上述流程即可。
if __name__=="__main__":
target_a=['06:55','11:55','19:53']
target_b=['07:00','12:00','19:54']
name_list=['Squirrel B','Squirrel B']
while True:
now=time.strftime("%m月%d日%H:%M",time.localtime())
print(now)
if now[-5:] in target_a:
base_weatherContent=getZZWeatherAndSendMsg()
weiboContent=getWeibo()
if now[-5:] in target_b:
hwnd=win32gui.FindWindow("WeChatMainWndForPC", '微信')
win32gui.ShowWindow(hwnd,win32con.SW_SHOW)
win32gui.MoveWindow(hwnd,0,0,1000,700,True)
time.sleep(1)
for name in name_list:
movePos(28,147)
click()
#2.移动鼠标到搜索框,单击,输入要搜索的名字
movePos(148,35)
click()
time.sleep(1)
setText(name)
ctrlV()
time.sleep(1) # 等待联系人搜索成功
enter()
time.sleep(1)
now=time.strftime("%m月%d日%H:%M",time.localtime())
weatherContent='现在是'+now+'\n'+base_weatherContent
setText(weatherContent)
ctrlV()
time.sleep(1)
altS()
time.sleep(1)
setText(weiboContent)
ctrlV()
time.sleep(1)
altS()
time.sleep(1)
win32gui.PostMessage(hwnd, win32con.WM_CLOSE, 0, 0)
time.sleep(60)
五、源代码
import win32clipboard as w
import win32con
import win32api
import win32gui
import ctypes
import time
import requests
from urllib.request import urlopen
from bs4 import BeautifulSoup
from selenium import webdriver
#把文字放入剪贴板
def setText(aString):
w.OpenClipboard()
w.EmptyClipboard()
w.SetClipboardData(win32con.CF_UNICODETEXT,aString)
w.CloseClipboard()
#模拟ctrl+V
def ctrlV():
win32api.keybd_event(17,0,0,0) #ctrl
win32api.keybd_event(86,0,0,0) #V
win32api.keybd_event(86,0,win32con.KEYEVENTF_KEYUP,0)#释放按键
win32api.keybd_event(17,0,win32con.KEYEVENTF_KEYUP,0)
#模拟alt+s
def altS():
win32api.keybd_event(18,0,0,0)
win32api.keybd_event(83,0,0,0)
win32api.keybd_event(83,0,win32con.KEYEVENTF_KEYUP,0)
win32api.keybd_event(18,0,win32con.KEYEVENTF_KEYUP,0)
# 模拟enter
def enter():
win32api.keybd_event(13,0,0,0)
win32api.keybd_event(13,0,win32con.KEYEVENTF_KEYUP,0)
#模拟单击
def click():
win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN, 0, 0, 0, 0)
win32api.mouse_event(win32con.MOUSEEVENTF_LEFTUP, 0, 0, 0, 0)
#移动鼠标的位置
def movePos(x,y):
win32api.SetCursorPos((x,y))
def getZZWeatherAndSendMsg():
HTML1='http://www.weather.com.cn/weather1dn/101190201.shtml'
driver=webdriver.Edge()
driver.get(HTML1)
soup=BeautifulSoup(driver.page_source,'html5lib')
#获取实时温度
tem=soup.find('span',class_='temp').string
#获取最高温度与最低温度
maxtem=soup.find('span',id='maxTemp').string
mintem=soup.find('span',id='minTemp').string
#获取污染状况
poll=soup.find('a',href='http://www.weather.com.cn/air/?city=101190201').string
#获取风向和湿度
win=soup.find('span',id='wind').string
humidity=soup.find('span',id='humidity').string
#获取紫外线状况
sun=soup.find('div',class_='lv').find('em').string
#获取穿衣指南
cloth=soup.find('dl',id='cy').find('dd').string
HTML2='http://www.weather.com.cn/weathern/101190201.shtml'
driver.get(HTML2)
soup=BeautifulSoup(driver.page_source,'html5lib')
#获取天气情况
wea=soup.find_all('p',class_='weather-info')[1].string
weatherContent='实时温度:'+tem+'℃'+'\n'+'今日温度变化:'+mintem+'~'+maxtem+'\n'+'今日天气:'+wea+'\n'+'当前风向:'+win+'\n'+'相对湿度:'+humidity+'\n'+'紫外线:'+sun+'\n'+'污染指数:'+poll+'\n'+'穿衣指南:'+cloth+'\n'+'注意天气变化!!'
driver.quit()
return weatherContent
def getWeibo():
url='https://s.weibo.com/top/summary'
headers={'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.72 Safari/537.36 Edg/90.0.818.41'}
r=requests.get(url,headers=headers)
r.raise_for_status()
r.encoding = r.apparent_encoding
soup = BeautifulSoup(r.text, "html.parser")
tr=soup.find_all('tr')
weiboContent='今日微博热榜:'+'\n'
for i in range(2,52):
text=tr[i].find('td',class_='td-02').find('a').string
weiboContent=weiboContent+str(i-1)+'"'+text+'"'+'\n'
return weiboContent
if __name__=="__main__":
target_a=['06:55','11:55','19:53']
target_b=['07:00','12:00','19:54']
name_list=['Squirrel B','Squirrel B']
while True:
now=time.strftime("%m月%d日%H:%M",time.localtime())
print(now)
if now[-5:] in target_a:
base_weatherContent=getZZWeatherAndSendMsg()
weiboContent=getWeibo()
if now[-5:] in target_b:
hwnd=win32gui.FindWindow("WeChatMainWndForPC", '微信')
win32gui.ShowWindow(hwnd,win32con.SW_SHOW)
win32gui.MoveWindow(hwnd,0,0,1000,700,True)
time.sleep(1)
for name in name_list:
movePos(28,147)
click()
#2.移动鼠标到搜索框,单击,输入要搜索的名字
movePos(148,35)
click()
time.sleep(1)
setText(name)
ctrlV()
time.sleep(1) # 等待联系人搜索成功
enter()
time.sleep(1)
now=time.strftime("%m月%d日%H:%M",time.localtime())
weatherContent='现在是'+now+'\n'+base_weatherContent
setText(weatherContent)
ctrlV()
time.sleep(1)
altS()
time.sleep(1)
setText(weiboContent)
ctrlV()
time.sleep(1)
altS()
time.sleep(1)
win32gui.PostMessage(hwnd, win32con.WM_CLOSE, 0, 0)
time.sleep(60)
六、运行效果

七、总结
- 爬取中国天气网数据
- 爬取微博热搜
- 自动发送微信消息
- 打包为exe并写个简单的GUI
- 代码编写较为简略,但基本功能已满足需求。暂未进行更复杂的开发,希望能为读者提供参考。
github地址 https://github.com/gudu12306/auto_for_wechat
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