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# sys.stdout = io.TextIOWrapper(sys.stdout.buffer,encoding='utf8') #改变标准输出的默认编码class mysql:def __init__(self):self.connect = pymysql.connect(host='localhost',port=3306,user='root',password='x20000317',database='web_work',charset='utf8mb4')self.cursor = self.connect.cursor(pymysql.cursors.DictCursor)def save(self,*args):passdef read(self,*args):passdef exit(self):self.cursor.close()self.connect.close()class weather(mysql):def __init__(self):super().__init__()self.headers = {'User-Agent':'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Mobile Safari/537.36 Edg/95.0.1020.53'}self.url_list = []self.area_list = ['hb','db','hd','hz','hn','xb','xn','gat']self.weekdata = []self.hourdata = []sql_1 = 'create table week(id int primary key auto_increment,city varchar(20),date char(20),weather varchar(20),max_tem char(10),min_tem char(10),wind char(10))'sql_2 = 'create table hour(id int primary key auto_increment,city char(15),time char(4),temperature int,humidity int,wind_direction varchar(10),wind_power int)'try:self.cursor.execute(sql_1)except:passtry:self.cursor.execute(sql_2)except:passdef get_url(self):for area_name in self.area_list:main_url = 'http://www.weather.com.cn/textFC/{}.shtml'.format(area_name)page_text = requests.get(url=main_url, headers=self.headers).texttree = etree.HTML(page_text)td_list = tree.xpath("//div[@class='hanml']/div[1]//td[@class='last']")for td in td_list:new_url = td.xpath("./a/@href")if new_url and (new_url[0] not in self.url_list):self.url_list.append(new_url[0])def v_func(self, string):value_list = []time_pattern = '"od21":"(.*?)",'time_list = re.findall(time_pattern, string, re.M)temperature_pattern = '"od22":"(.*?)",'temperature_list = re.findall(temperature_pattern, string, re.M)humidity_pattern = '"od27":"(.*?)",'humidity_list = re.findall(humidity_pattern, string, re.M)wind_pattern = '"od24":"(.*?)","od25":"(.*?)",'wind_list = re.findall(wind_pattern, string, re.M)for i in range(len(time_list)):value_dict = {'time': time_list[i],'temperature': temperature_list[i],'humidity': humidity_list[i],'wind_direction': wind_list[i][0],'wind_power': wind_list[i][1]}value_list.insert(0, value_dict)return value_listdef get_data(self):self.get_url()for url in self.url_list:page = requests.get(url=url, headers=self.headers)page.encoding="utf-8"tree = etree.HTML(page.text)city_list1 = tree.xpath("//div[@class='crumbs fl']//text()")city_list2 = [item.strip('全国').strip('>') for item in city_list1]city_list3 = [item.strip() for item in city_list2 if item.strip() != '']self.city_info = '-'.join(city_list3)li_list = tree.xpath("//ul[@class='t clearfix']/li")for li in li_list:text_list1 = li.xpath(".//text()")text_list2 = [item.strip('/') for item in text_list1]text_list3 = [item.strip() for item in text_list2 if item.strip()!='']text_list3.insert(0,self.city_info)if len(text_list3)!=6:text_list3.insert(3,'None')self.weekdata.append(text_list3)string = tree.xpath("//div[@class='left-div']/script//text()")[0]data_dict = {'name':re.findall('"od1":"(.*?)",',string)[0],'value':self.v_func(string)}self.hourdata.append(data_dict)self.save(self.weekdata,1)self.save(self.hourdata,2)def save(self,data,num):if num == 1:sql = 'truncate table week'self.cursor.execute(sql)self.connect.commit()sql = 'insert into week(city,date,weather,max_tem,min_tem,wind) values(%s,%s,%s,%s,%s,%s)'for item in data:self.cursor.execute(sql,(item[0],item[1],item[2],item[3],item[4],item[5]))self.connect.commit()elif num == 2:sql = 'truncate table hour'self.cursor.execute(sql)self.connect.commit()sql = 'insert into hour(city,time,wind_direction,temperature,humidity,wind_power) values(%s,%s,%s,%s,%s,%s)'for data_item in data:for item in data_item['value']:try:self.cursor.execute(sql,(data_item['name'],item['time'],item['wind_direction'],item['temperature'],item['humidity'],item['wind_power']))except Exception as e:print(e)print(data_item['name'],item)self.connect.commit()def read(self,num,data):if num == 1:sql = 'select * from week where city LIKE %s'self.cursor.execute(sql,('%'+data+'%'))elif num == 2:sql = 'select * from hour where city=%s'self.cursor.execute(sql,(data))info_list = list(self.cursor.fetchall())return info_list">