Python爬虫-爬取手机应用市场中APP下载量

一、首先是爬取360手机助手应用市场信息,用来爬取360应用市场,App软件信息,现阶段代码只能爬取下载量,如需爬取别的信息,请自行添加代码。

使用方法:

1、在D盘根目录新建.tet文件,命名为App_name,并把App名称黏贴到文件内,格式如下:

  Python爬虫-爬取手机应用市场中APP下载量_第1张图片

2、直接运行就好。

最近比较忙,好久没更新博客了,为什么忙呢,是因为最近被派到“App专项治理组”做App治理工作了,在专班成立初期热心网友举报量比较多,天天处理举报问题,和统计被举报App的下载量,而且是5个应用市场下载量和,如果就几款App可能还好,但是每天处理几百款App,俺表示眼睛和手指头都抗议,这时我就想起了python,所以决定做5个爬虫,分别爬取5个应用市场上App信息,废话不多说,下面是我的代码:

 

1、第一种方法,使用字典完成。

# !/usr/bin/env python
# -*- coding: UTF-8 –*-
__author__ = 'Mr.Li'

import requests
from bs4 import BeautifulSoup
import xlsxwriter,time


def write_excel(name, download, type_name=0, url=0):
    # 全局变量row代表行号 0-2代表列数
    global row
    sheet.write(row, 0, row)
    sheet.write(row, 1, name)
    sheet.write(row, 2, download)

    row += 1


headers = {'User-Agent':'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36'}


def App_download(url,app_name):
    # 获取地址
    i = 1
    try:
        time.sleep(0.5)
        req = requests.get(url=url,headers=headers)
        req.encoding = 'utf-8'

        # 获取的内容保存在变量
        html_all = req.text

        div_bf = BeautifulSoup(html_all, 'html.parser')  # 使用BeautifulSoup进行解析
        div = div_bf.find_all('div',class_='SeaCon')#查找SeaCon元素内容

        a_bf = BeautifulSoup(str(div), 'html.parser')  # 重新解析
        info = a_bf.find_all('li')  # 查找元素为'li'的内容,其中包括APP的名称和下载量信息
        name = info[0].dl.dd.h3.a.text.strip()
        all_list = []
        if name == app_name:

            download_num = BeautifulSoup(str(info[0]), 'html.parser')  # 重新解析
            texts = download_num.find_all('p', class_='downNum')#查找下载量
            find_download_num = texts[0].text.replace('\xa0'*8,'\n\n')[:-3]#去除不需要的信息
            print(name, find_download_num)
            write_excel(name,find_download_num)#写入xlsx文件
        else:
            find_download_num1= 'None'
            print(app_name,find_download_num1)
            write_excel(app_name,find_download_num1)

    except Exception as e:
        #print('error:%s,尝试重新获取'%(e,i))
        #print(url)
        if i != 3:
            App_download(url, app_name)
        i += 1

row = 1
# 新建一个excel文件
file = xlsxwriter.Workbook('360_applist.xlsx')
# 新建一个sheet
sheet = file.add_worksheet()
if __name__ == '__main__':
    path_file = "D:\\"
    Old_AppFlie = open(path_file + "App_name.txt").read()
    app_list = Old_AppFlie.split('\n')  # 把字符串转为列表
    #app_list = ['微信','1113123','支付宝','荔枝']
    for app_name in app_list:
        yyb_url = 'http://zhushou.360.cn/search/index/?kw={app_name}'.format(app_name=app_name)
        App_download(yyb_url,app_name)
    file.close()

 运行结果:

Python爬虫-爬取手机应用市场中APP下载量_第2张图片

可以查到的,会显示下载量,如果在应用中查不到会显示None,并把结果写到360_applist.xlsx文件中。

 

  已经过一段时间使用以上程序发现一个问题,如果所爬取的程序不存在,也就是在360应用市场中搜索不到的话,程序就会卡死,搜索不到指的是页面一个内容也没有,如下图:

Python爬虫-爬取手机应用市场中APP下载量_第3张图片

 

  这样的话程序会卡死,最终出错,这是因为我们程序中需要用到索引,在查询结果中进行索引,但是结果是空的,在使用索引就超范围了,所以会卡死报错,我们可以判断是,如果搜索不到内容及搜索结果为空也就是0,我在程序中做了判断,如果搜索结果长度不等于0就执行爬取下载量操作,然后下入数据,如果等于0就直接写入APP名称和None表示没有东西。

修改后代码:

# !/usr/bin/env python
# -*- coding: UTF-8 –*-
__author__ = 'Mr.Li'

import requests
from bs4 import BeautifulSoup
import xlsxwriter,time


def write_excel(name, download, type_name=0, url=0):
    # 全局变量row代表行号 0-2代表列数
    global row
    sheet.write(row, 0, row)
    sheet.write(row, 1, name)
    sheet.write(row, 2, download)

    row += 1


headers = {'User-Agent':'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36'}


def App_download(url,app_name):
    # 获取地址
    i = 1
    try:
        time.sleep(0.5)
        req = requests.get(url=url,headers=headers)
        req.encoding = 'utf-8'

        # 获取的内容保存在变量
        html_all = req.text

        div_bf = BeautifulSoup(html_all, 'html.parser')  # 使用BeautifulSoup进行解析
        div = div_bf.find_all('div',class_='SeaCon')#查找SeaCon元素内容

        a_bf = BeautifulSoup(str(div), 'html.parser')  # 重新解析
        info = a_bf.find_all('li')  # 查找元素为'li'的内容,其中包括APP的名称和下载量信息
        name = info[0].dl.dd.h3.a.text.strip()
        all_list = []
        if name == app_name:

            download_num = BeautifulSoup(str(info[0]), 'html.parser')  # 重新解析
            texts = download_num.find_all('p', class_='downNum')#查找下载量
            find_download_num = texts[0].text.replace('\xa0'*8,'\n\n')[:-3]#去除不需要的信息
            print(name, find_download_num)
            write_excel(name,find_download_num)#写入xlsx文件
        else:
            find_download_num1= 'None'
            print(app_name,find_download_num1)
            write_excel(app_name,find_download_num1)

    except Exception as e:
        #print('error:%s,尝试重新获取'%(e,i))
        #print(url)
        if i != 3:
            App_download(url, app_name)
        i += 1




row = 1
# 新建一个excel文件
file = xlsxwriter.Workbook('360_applist.xlsx')
# 新建一个sheet
sheet = file.add_worksheet()
if __name__ == '__main__':
    path_file = "D:\\"
    Old_AppFlie = open(path_file + "App_name.txt").read()
    app_list = Old_AppFlie.split('\n')  # 把字符串转为列表
    #app_list = ['微信','1113123','支付宝','荔枝']
    for app_name in app_list:
        yyb_url = 'http://zhushou.360.cn/search/index/?kw={app_name}'.format(app_name=app_name)
        App_download(yyb_url,app_name)
    file.close()

 二、爬取百度应用市场APP信息

# !/usr/bin/env python
# -*- coding: UTF-8 –*-
__author__ = 'Mr.Li'

import requests
from bs4 import BeautifulSoup
import xlsxwriter,time


def write_excel(name, download, type_name=0, url=0):
# 全局变量row代表行号 0-2代表列数
global row
sheet.write(row, 0, row)
sheet.write(row, 1, name)
sheet.write(row, 2, download)

row += 1


headers = {'User-Agent':'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36'}


def App_download(url,app_name):
# 获取地址
i = 1
try:
time.sleep(0.5)
req = requests.get(url=url,headers=headers)
req.encoding = 'utf-8'

# 获取的内容保存在变量
html_all = req.text

div_bf = BeautifulSoup(html_all, 'html.parser') # 使用BeautifulSoup进行解析
div = div_bf.find_all('div',class_='SeaCon')#查找SeaCon元素内容

a_bf = BeautifulSoup(str(div), 'html.parser') # 重新解析
info = a_bf.find_all('li') # 查找元素为'li'的内容,其中包括APP的名称和下载量信息
name = info[0].dl.dd.h3.a.text.strip()
if len(info) != 0:
if name == app_name:

download_num = BeautifulSoup(str(info[0]), 'html.parser') # 重新解析
texts = download_num.find_all('p', class_='downNum')#查找下载量
find_download_num = texts[0].text.replace('\xa0'*8,'\n\n')[:-3]#去除不需要的信息
print(name, find_download_num)
write_excel(name,find_download_num)#写入xlsx文件
else:
find_download_num1= 'None'
print(app_name,find_download_num1)
write_excel(app_name,find_download_num1)
else:
print(app_name, 'None')
write_excel(app_name, 'None')
except Exception as e:
#print('error:%s,尝试重新获取'%(e,i))
#print(url)
if i != 3:
App_download(url, app_name)
i += 1




row = 1
# 新建一个excel文件
file = xlsxwriter.Workbook('360_applist.xlsx')
# 新建一个sheet
sheet = file.add_worksheet()
if __name__ == '__main__':
path_file = "D:\\"
Old_AppFlie = open(path_file + "App_name.txt").read()
app_list = Old_AppFlie.split('\n') # 把字符串转为列表
#app_list = ['微信','1113123','支付宝','荔枝']
for app_name in app_list:
yyb_url = 'http://zhushou.360.cn/search/index/?kw={app_name}'.format(app_name=app_name)
App_download(yyb_url,app_name)
file.close()

三、爬取华为应用市场APP信息

# !/usr/bin/env python
# -*- coding: UTF-8 –*-
__author__ = 'Mr.Li'

import requests
from bs4 import BeautifulSoup
import xlsxwriter


def write_excel(name, download, type_name=0, url=0):
    # 全局变量row代表行号 0-2代表列数
    global row
    sheet.write(row, 0, row)
    sheet.write(row, 1, name)
    sheet.write(row, 2, download)

    row += 1



headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36'}

def App_download(url,app_name):
    # 获取地址
    i = 1
    try:
        req = requests.get(url=url,headers=headers)
        req.encoding = 'utf-8'

        # 获取的内容保存在变量
        html_all = req.text
        div_bf = BeautifulSoup(html_all, 'html.parser')  # 使用BeautifulSoup进行解析
        div = div_bf.find_all('div',class_='unit-main')#查找SeaCon元素内容

        a_bf = BeautifulSoup(str(div), 'html.parser')  # 重新解析
        info = a_bf.find_all('div',class_='list-game-app dotline-btn nofloat')  # 查找元素为'li'的内容,其中包括APP的名称和下载量信息

        if len(info) != 0:

            name = info[0].h4.a.text.strip()  # 获取app名称,去除两边的空格
            if name == app_name:
                download_num = BeautifulSoup(str(info[0]), 'html.parser')  # 重新解析
                texts = download_num.find_all('span')  # 查找下载量
                find_download_num = texts[3].text.replace('\xa0' * 8, '\n\n')[2:]  # 去除不需要的信息
                print(name, find_download_num)
                write_excel(name, find_download_num)  # 写入xlsx文件
            else:
                find_download_num1= 'None'
                print(app_name,find_download_num1)
                write_excel(app_name,find_download_num1)
        else:
            print(app_name, 'None')
            write_excel(app_name, 'None')  # 写入xlsx文件
    except Exception as e:
        #print('error:%s,尝试重新获取'%(e,i))
        #print(url)
        if i != 3:
            App_download(url, app_name)
        i += 1

row = 1
# 新建一个excel文件
file = xlsxwriter.Workbook('hw_applist.xlsx')
# 新建一个sheet
sheet = file.add_worksheet()
if __name__ == '__main__':
    path_file = "D:\\"
    Old_AppFlie = open(path_file + "App_name.txt").read()
    app_list = Old_AppFlie.split('\n')  # 把字符串转为列表
    #app_list = ['微信','wea11','支付宝','荔枝']
    for app_name in app_list:
        yyb_url = 'https://appstore.huawei.com/search/{app_name}'.format(app_name=app_name)
        App_download(yyb_url,app_name)
    file.close()

  爬取华为和百度应用市场代码就不详细介绍了,原理一样,如果感兴趣你还可以在这基础上做出更改,加入爬取APP介绍信息,爬取APP版本等功能

你可能感兴趣的:(Python爬虫-爬取手机应用市场中APP下载量)