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以下是直接保存到数据库版本的
import pandas as pd
from bs4 import BeautifulSoup
import re
import time
import requests
import pymysql
import datetime#请求页面方法
def getPage(url):#设置请求头headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36'}#请求页面html = requests.get(url,headers=headers)#查看网页状态码,如果为200则为正常if html.status_code == 200:#返回网页文本内容return html.textelse:return Nonedef getWeekend(year,month,day):week_list = ["星期一","星期二","星期三","星期四","星期五","星期六","星期日"]return week_list[datetime.date(year,month,day).weekday()] def concatDate(dateString):date = re.findall('>(.*?)</a>',dateString)[0]dateYear = date[:4]dateMonth = date[4:6]dateDay = date[6:]dateString = dateYear+'-'+dateMonth+'-'+dateDayweekendString = getWeekend(int(dateYear),int(dateMonth),int(dateDay)) return dateString,weekendStringdef analysisPage(url,city):html = getPage(url)page = BeautifulSoup(html,'html.parser')#气温lowerTemperature,higherTemperature = [],[]#日期dateList,weekList = [],[]#天气weatherList = []#风向windList = []dataList = page.find_all('tr')for item in dataList:date = item.find_all('a')weatherInformation = item.find_all('td')#temperatureif date!=[]:date,weekend = concatDate(str(date))dateList.append(date)weekList.append(weekend)temperatureInfo = weatherInformation[1]temperatureInfo = re.findall('>(.*?)</td>',str(temperatureInfo))[0]HigherTemperatureInfo = re.findall('~(.*?)℃',temperatureInfo)lowerTemperatureInfo = re.findall('(.*?)~',temperatureInfo)higherTemperature.append(HigherTemperatureInfo[0])lowerTemperature.append(lowerTemperatureInfo[0])weatherInfo = weatherInformation[2]weatherInfo = re.findall('>(.*?)</td>',str(weatherInfo))[0]weatherList.append(weatherInfo)windDirection = weatherInformation[3]windDirection = re.findall('>(.*?)</td>',str(windDirection))[0]windLevel = weatherInformation[4]windLevel = re.findall('>(.*?)</td>',str(windLevel))[0]windList.append(windDirection+' '+windLevel)else:pass#获取爬取时间crawlingTime,cityList = [],[]for i in range(len(dateList)):crawlingTime.append(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))cityList.append(city)res = {'日期':dateList,'星期':weekList,'天气':weatherList,'最高气温':higherTemperature,'最低气温':lowerTemperature,'风速信息':windList,"城市":cityList,"抓取时间":crawlingTime}return res#梳理数据 方便后面保存到数据库
def concatData(Dataframe):res = []for i in range(len(Dataframe)):#print(list(Dataframe.iloc[i][:]))res.append(list(Dataframe.iloc[i][:]))return resdef operateSQL():#创建数据库链接db = pymysql.connect(host="localhost",port=3306,user="root",passwd='1234567',db='studenttest',charset='utf8')# #创建数据库游标对象cursor = db.cursor()#创建数据表格return cursor,dbdef saveData(url,cityName,tableName):# url = 'https://tianqi.2345.com/today-59493.htm'res = analysisPage(url,cityName)data = pd.DataFrame(res)#保存数据data.to_csv('Resfile{}_{}.csv'.format(cityName,time.strftime('%Y-%m-%d', time.localtime(time.time())),encoding='utf-8'))#tableName = 'future_data'cursor,db = operateSQL()cursor.execute("CREATE TABLE IF NOT EXISTS %s ( ID INT AUTO_INCREMENT PRIMARY KEY, DATETIMES VARCHAR(255) , WEATHER VARCHAR(255) ,WEEKEND VARCHAR(255), LOWER_TEMPERATURE VARCHAR(255), HIGH_TEMPERATURE VARCHAR(255), WIND VARCHAR(255), CITY VARCHAR(255) ,CRAWLING_TIME DATE)"%tableName)#keys = list(res.keys())#cursor.execute("deleted from 表 where CRAWLING_TIME = '{}'"%time.strftime('%Y-%m-%d', time.localtime(time.time())))keysBox = ['DATETIMES','WEEKEND','WEATHER','HIGH_TEMPERATURE','LOWER_TEMPERATURE','WIND','CITY','CRAWLING_TIME']b = concatData(data)for item in b:#执行插入语句sql="INSERT INTO {0} ({1},{2},{3},{4},{5},{6},{7},{8}) VALUES({9},{10},{11},{12},{13},{14},{15},{16})".format(tableName,keysBox[0],keysBox[1],keysBox[2],keysBox[3],keysBox[4],keysBox[5],keysBox[6],keysBox[7],repr(item[0]),repr(item[1]),repr(item[2]),repr(item[3]),repr(item[4]),repr(item[5]),repr(item[6]),repr(item[7]))#sql="INSERT INTO test_data ({0},{1},{2},{3},{4},{5},{6},{7}) VALUES({8},{9},{10},{11},{12},{13},{14},{15})".format(keysBox[0],keysBox[1],keysBox[2],keysBox[3],keysBox[4],keysBox[5],keysBox[6],keysBox[7],repr(item[0]),repr(item[1]),repr(item[2]),repr(item[3]),repr(item[4]),repr(item[5]),repr(item[6]),repr(item[7]))print('正在执行sql语句:%s'%sql)print('--- --- ---')#执行插入语句cursor.execute(sql)db.commit()return Nonedef getHistoryWeather(): #cityList为需要爬取的城市列表的拼音cityDict = {'长沙':'changsha','杭州':'hangzhou','南宁':'nanning','深圳':'shenzhen','苏州':'suzhou','西安':'xian','厦门':'xiamen'}tableName = 'future_data'cursor,db = operateSQL()cursor.execute('DROP TABLE {}'%tableName)for key,value in cityDict.items():url = 'https://www.tianqishi.com/lishi/%s.html'%valuesaveData(url,cityName=key,tableName=tableName)time.sleep(5)print('%s执行完毕'%key)if __name__ == '__main__':# url = 'https://www.tianqishi.com/lishi/changsha.html'# res = analysisPage(url,'长沙')# print(res)getHistoryWeather()
以下是直接保存到本地csv文件的代码:
import pandas as pd
from bs4 import BeautifulSoup
import re
import time
import requests
import pymysql
import datetime#请求页面方法
def getPage(url):#设置请求头headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36'}#请求页面html = requests.get(url,headers=headers)#查看网页状态码,如果为200则为正常if html.status_code == 200:#返回网页文本内容return html.textelse:return Nonedef getWeekend(year,month,day):week_list = ["星期一","星期二","星期三","星期四","星期五","星期六","星期日"]return week_list[datetime.date(year,month,day).weekday()] def concatDate(dateString):date = re.findall('>(.*?)</a>',dateString)[0]dateYear = date[:4]dateMonth = date[4:6]dateDay = date[6:]dateString = dateYear+'-'+dateMonth+'-'+dateDayweekendString = getWeekend(int(dateYear),int(dateMonth),int(dateDay)) return dateString,weekendStringdef analysisPage(url,city):html = getPage(url)page = BeautifulSoup(html,'html.parser')#气温lowerTemperature,higherTemperature = [],[]#日期dateList,weekList = [],[]#天气weatherList = []#风向windList = []dataList = page.find_all('tr')for item in dataList:date = item.find_all('a')weatherInformation = item.find_all('td')#temperatureif date!=[]:date,weekend = concatDate(str(date))dateList.append(date)weekList.append(weekend)temperatureInfo = weatherInformation[1]temperatureInfo = re.findall('>(.*?)</td>',str(temperatureInfo))[0]HigherTemperatureInfo = re.findall('~(.*?)℃',temperatureInfo)lowerTemperatureInfo = re.findall('(.*?)~',temperatureInfo)higherTemperature.append(HigherTemperatureInfo[0])lowerTemperature.append(lowerTemperatureInfo[0])weatherInfo = weatherInformation[2]weatherInfo = re.findall('>(.*?)</td>',str(weatherInfo))[0]weatherList.append(weatherInfo)windDirection = weatherInformation[3]windDirection = re.findall('>(.*?)</td>',str(windDirection))[0]windLevel = weatherInformation[4]windLevel = re.findall('>(.*?)</td>',str(windLevel))[0]windList.append(windDirection+' '+windLevel)else:pass#获取爬取时间crawlingTime,cityList = [],[]for i in range(len(dateList)):crawlingTime.append(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))cityList.append(city)res = {'日期':dateList,'星期':weekList,'天气':weatherList,'最高气温':higherTemperature,'最低气温':lowerTemperature,'风速信息':windList,"城市":cityList,"抓取时间":crawlingTime}return res#梳理数据 方便后面保存到数据库
def concatData(Dataframe):res = []for i in range(len(Dataframe)):#print(list(Dataframe.iloc[i][:]))res.append(list(Dataframe.iloc[i][:]))return resdef saveData(url,cityName,tableName):# url = 'https://tianqi.2345.com/today-59493.htm'res = analysisPage(url,cityName)data = pd.DataFrame(res)#保存数据data.to_csv('Resfile{}_{}.csv'.format(cityName,time.strftime('%Y-%m-%d', time.localtime(time.time())),encoding='utf-8'))#tableName = 'future_data'# cursor,db = operateSQL()# cursor.execute("CREATE TABLE IF NOT EXISTS %s ( ID INT AUTO_INCREMENT PRIMARY KEY, DATETIMES VARCHAR(255) , WEATHER VARCHAR(255) ,WEEKEND VARCHAR(255), LOWER_TEMPERATURE VARCHAR(255), HIGH_TEMPERATURE VARCHAR(255), WIND VARCHAR(255), CITY VARCHAR(255) ,CRAWLING_TIME DATE)"%tableName)# #keys = list(res.keys())# #cursor.execute("deleted from 表 where CRAWLING_TIME = '{}'"%time.strftime('%Y-%m-%d', time.localtime(time.time())))# keysBox = ['DATETIMES','WEEKEND','WEATHER','HIGH_TEMPERATURE','LOWER_TEMPERATURE','WIND','CITY','CRAWLING_TIME']# b = concatData(data)# for item in b:# #执行插入语句# sql="INSERT INTO {0} ({1},{2},{3},{4},{5},{6},{7},{8}) VALUES({9},{10},{11},{12},{13},{14},{15},{16})".format(tableName,keysBox[0],keysBox[1],keysBox[2],keysBox[3],keysBox[4],keysBox[5],keysBox[6],keysBox[7],repr(item[0]),repr(item[1]),repr(item[2]),repr(item[3]),repr(item[4]),repr(item[5]),repr(item[6]),repr(item[7]))# #sql="INSERT INTO test_data ({0},{1},{2},{3},{4},{5},{6},{7}) VALUES({8},{9},{10},{11},{12},{13},{14},{15})".format(keysBox[0],keysBox[1],keysBox[2],keysBox[3],keysBox[4],keysBox[5],keysBox[6],keysBox[7],repr(item[0]),repr(item[1]),repr(item[2]),repr(item[3]),repr(item[4]),repr(item[5]),repr(item[6]),repr(item[7]))# print('正在执行sql语句:%s'%sql)# print('--- --- ---')# #执行插入语句# cursor.execute(sql)# db.commit()return Nonedef getHistoryWeather(): #cityList为需要爬取的城市列表的拼音cityDict = {'长沙':'changsha','杭州':'hangzhou','南宁':'nanning','深圳':'shenzhen','苏州':'suzhou','西安':'xian','厦门':'xiamen'}tableName = 'future_data'#cursor,db = operateSQL()#cursor.execute('DROP TABLE {}'%tableName)for key,value in cityDict.items():url = 'https://www.tianqishi.com/lishi/%s.html'%valuesaveData(url,cityName=key,tableName=tableName)time.sleep(5)print('%s执行完毕'%key)if __name__ == '__main__':# url = 'https://www.tianqishi.com/lishi/changsha.html'# res = analysisPage(url,'长沙')# print(res)getHistoryWeather()
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