#encoding=utf-8
from?bs4?import?BeautifulSoup
import?requests

base_url?=?‘https://www.aqistudy.cn/historydata/daydata.php?city=‘
str_city?=?‘北京‘

def?get_month_set（）:
????month_set?=?list（）
????for?i?in?range（7?10）:
????????month_set.append（（‘2015-0%s‘?%?i））
????for?i?in?range（10?13）:
????????month_set.append（（‘2015-%s‘?%?i））
????for?i?in?range（1?10）:
????????month_set.append（（‘2016-0%s‘?%?i））
????month_set.append（（‘2016-%s‘?%?10））
????month_set.append（（‘2016-%s‘?%?11））
????return?month_set

def?get_city_set（）:
????str_file?=?r‘city.txt‘
????fp?=?open（str_file‘rb‘）
????city_set?=?list（）
????for?line?in?fp.readlines（）:
????????city_set.append（str（line.strip（）encoding=‘utf-8‘））
????return?city_set

month_set?=?get_month_set（）
city_set?=?get_city_set（）

for?city?in?city_set:
????file_name?=?city?+?‘.csv‘
????fp?=?open（‘aqi/‘?+?file_name?‘w‘）
????for?i?in?range（len（month_set））:
????????str_month?=?month_set[i]
????????weburl?=?（‘%s%s&month=%s‘?%?（base_urlcitystr_month））
????????response?=?requests.get（weburl）.content
????????soup?=?BeautifulSoup（response‘html.parser‘from_encoding=‘utf-8‘）
????????result?=?soup.find_all（‘td‘attrs={‘align‘:‘center‘}recursive=True）

????????for?j?in?range（0len（result）?-?1111）:
????????????tag_date?=?result[j]
????????????tag_aqi?=?result[j?+?1]
????????????record_day?=?tag_date.get_text（）.strip（）
????????????record_aqi?=?tag_aqi.get_text（）.strip（）
????????????fp.write（（‘%s%s\n‘?%?（record_dayrecord_aqi）））

????????print（‘%d---%s%s---DONE‘?%?（city_set.index（city）?city?str_month））
????fp.close（）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-02-23?08:16??aqistudy-master\
?????文件????????1236??2017-02-23?08:16??aqistudy-master\README.md
?????目錄???????????0??2017-02-23?08:16??aqistudy-master\aqi\
?????文件??????206744??2017-02-23?08:16??aqistudy-master\aqi\alldata.csv
?????文件????????7266??2017-02-23?08:16??aqistudy-master\aqi\三亞.csv
?????文件????????7269??2017-02-23?08:16??aqistudy-master\aqi\三明.csv
?????文件????????7346??2017-02-23?08:16??aqistudy-master\aqi\上海.csv
?????文件????????7283??2017-02-23?08:16??aqistudy-master\aqi\上饒.csv
?????文件????????7279??2017-02-23?08:16??aqistudy-master\aqi\東莞.csv
?????文件????????7474??2017-02-23?08:16??aqistudy-master\aqi\東營.csv
?????文件????????7278??2017-02-23?08:16??aqistudy-master\aqi\中山.csv
?????文件????????7281??2017-02-23?08:16??aqistudy-master\aqi\麗水.csv
?????文件????????7361??2017-02-23?08:16??aqistudy-master\aqi\樂山.csv
?????文件????????7298??2017-02-23?08:16??aqistudy-master\aqi\佛山.csv
?????文件????????7525??2017-02-23?08:16??aqistudy-master\aqi\保定.csv
?????文件????????7394??2017-02-23?08:16??aqistudy-master\aqi\信陽.csv
?????文件????????7345??2017-02-23?08:16??aqistudy-master\aqi\六安.csv
?????文件????????7468??2017-02-23?08:16??aqistudy-master\aqi\北京.csv
?????文件????????7356??2017-02-23?08:16??aqistudy-master\aqi\十堰.csv
?????文件????????7361??2017-02-23?08:16??aqistudy-master\aqi\南京.csv
?????文件????????7290??2017-02-23?08:16??aqistudy-master\aqi\南寧.csv
?????文件????????7268??2017-02-23?08:16??aqistudy-master\aqi\南平.csv
?????文件????????7332??2017-02-23?08:16??aqistudy-master\aqi\南昌.csv
?????文件????????7358??2017-02-23?08:16??aqistudy-master\aqi\南通.csv
?????文件????????7269??2017-02-23?08:16??aqistudy-master\aqi\廈門.csv
?????文件????????7289??2017-02-23?08:16??aqistudy-master\aqi\臺州.csv
?????文件????????7390??2017-02-23?08:16??aqistudy-master\aqi\合肥.csv
?????文件????????7331??2017-02-23?08:16??aqistudy-master\aqi\咸寧.csv
?????文件????????7456??2017-02-23?08:16??aqistudy-master\aqi\咸陽.csv
?????文件????????7383??2017-02-23?08:16??aqistudy-master\aqi\哈爾濱.csv
?????文件????????7331??2017-02-23?08:16??aqistudy-master\aqi\嘉興.csv
............此處省略97個文件信息