2. 一个简单的糗百客户端¶
这是初学python时的一个练手脚本，使用了：
- wxpython
- requests
- BeautifulSoup4
- ...
功能：
- 后台爬取数据
- 预先加载
- 图片也能显示
- 类别切换
- ... 等等
给一个编译后的: qb.exe
这是效果图
源码:
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from __future__ import absolute_import, unicode_literals
__author__ = "golden"
__date__ = '2017/8/3'
# !/usr/bin/python
# -*- coding:utf-8 -*-
import wx
import threading
import time
import sys, os
import requests
from bs4 import BeautifulSoup
########################################################################
class SpiderThread(threading.Thread):
"""
爬虫 线程
"""
# ----------------------------------------------------------------------
def __init__(self, category, page_data, current_page, current_item, show_info, set_status_text, lock, name):
threading.Thread.__init__(self)
self.category = category
self.page_data = page_data
self.current_page = current_page
self.current_item = current_item
self.set_status_text = set_status_text
self.show_info = show_info
self.lock = lock
self.name = name
def run(self):
self.load_page()
def get_page(self, page_num):
wx.CallAfter(self.set_status_text, message='正在加载第 %s 页...' % str(page_num))
URL = "http://www.qiushibaike.com/" + self.category + "/page/" + str(page_num)
agent_header = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'
headers = {'User-Agent': agent_header}
page_content = requests.get(URL, headers=headers).content # .decode('utf-8').encode('GBK','ignore')
soup = BeautifulSoup(page_content, "lxml")
items1 = soup.find_all('div', class_='article')
item_number = 1
if not os.path.exists('tmp_jpg'):
os.makedirs('tmp_jpg')
if not os.path.exists(r'tmp_jpg/def.jpg'):
ir = requests.get('http://pic8.nipic.com/20100703/4887831_015505282659_2.jpg')
open('tmp_jpg/def.jpg', 'wb').write(ir.content)
for item in items1:
try:
myjpg = item.find('div', class_='thumb').find('img')
except Exception as e:
myjpg = None
stats_vote = item.find('span', class_='stats-vote').find('i').get_text() ####提取好笑个数
stats_comments = item.find('span', class_='stats-comments').find('i').get_text() ####提取回复个数
voting = [span.get_text() for span in item.find_all('span', class_='number hidden')] ####提取顶、拍个数
auth = item.find('h2').get_text().strip()
content = item.find('div', class_='content').find('span').get_text().strip()
if page_num not in self.page_data.keys():
self.page_data[page_num] = {}
self.page_data[page_num].update(
{item_number: {
'auth': auth,
'content': content,
'stats_vote': stats_vote,
'stats_comments': stats_comments,
'voting_up': voting[0],
'voting_down': voting[1],
'jpg': '',
'jpg_name': '',
}})
if myjpg:
jpg_name = myjpg['src'].split('/')[-1]
ir = requests.get(myjpg['src'].replace('//', 'http://'))
open('tmp_jpg/' + jpg_name, 'wb').write(ir.content)
self.page_data[page_num][item_number].update({
'jpg': myjpg,
'jpg_name': jpg_name,
})
item_number += 1
wx.CallAfter(self.set_status_text, message='第 %s 页已加载 %s 条' % (str(page_num), str(item_number)))
wx.CallAfter(self.show_info, message='第%s页(共%s条)加载完成。' % (str(page_num), str(item_number)))
def load_page(self):
while self.lock.isSet():
if self.page_count < self.current_page + 2:
try:
self.get_page(str(self.page_count + 1))
time.sleep(0.1)
except Exception as ex:
msg = u'无法连接糗百：%s' % ex
wx.CallAfter(self.set_status_text, message=msg)
time.sleep(1)
else:
msg = u'加载爬虫休眠中...'
wx.CallAfter(self.set_status_text, message=msg)
time.sleep(3)
wx.CallAfter(self.set_status_text, message='%s 成功退出。' % self.name)
@property
def page_count(self):
return len(self.page_data.keys())
########################################################################
class MyFrame(wx.Frame):
"""
重构Frame
"""
# ----------------------------------------------------------------------
def __init__(self, page_data, current_page, current_item):
self.page_data = page_data
self.current_page = current_page
self.current_item = current_item
self.current_page_data = {}
self.current_item_data = {}
self.category = 'hot'
self.lock = threading.Event()
wx.Frame.__init__(self, None, -1, u'我的糗百客户端', size=(600, 720))
self.create_menu_bar()
panel = wx.Panel(self, -1)
panel.SetBackgroundColour('white')
self.qbtext = wx.TextCtrl(panel, -1, pos=(100, 10), size=(400, 150),
style=wx.TE_CENTER | wx.TE_READONLY | wx.TE_MULTILINE | wx.TE_NOHIDESEL | wx.TE_RICH2)
self.stc = wx.StaticText(panel, -1, pos=(150, 0))
self.stccom = wx.StaticText(panel, -1, pos=(150, 155))
self.jpgbutton = wx.BitmapButton(panel, -1)
self.status_bar = self.CreateStatusBar()
next_button = wx.Button(panel, label=u'下一条', pos=(520, 300), size=(40, 100), style=wx.BU_ALIGN_MASK)
next_button.Bind(wx.EVT_BUTTON, self.next_item, next_button)
previous_button = wx.Button(panel, label=u'上一条', pos=(20, 300), size=(40, 100), style=wx.BU_ALIGN_MASK)
previous_button.Bind(wx.EVT_BUTTON, self.previous_item, previous_button)
self.jpgbutton.Bind(wx.EVT_BUTTON, self.next_item, self.jpgbutton)
self.show_info()
self.Show()
def show_info(self, message=''):
self.load_info()
if self.current_item_data:
text = self.current_item_data.get('content')
voting_up = self.current_item_data.get('voting_up')
voting_down = self.current_item_data.get('voting_down')
stats_comments = self.current_item_data.get('stats_comments')
stats_vote = self.current_item_data.get('stats_vote')
auth = self.current_item_data.get('auth')
else:
text = '正在加载中...'
voting_up = 0
voting_down = 0
stats_comments = 0
stats_vote = 0
auth = ''
self.qbtext.SetLabel(text)
self.stc.SetLabel(
u'第 ' + str(self.current_page) + u' 页 第 ' + str(self.current_item) + u' 条 作者：' + auth)
self.stccom.SetLabel(
u'%s个顶 %s个拍 %s个评论 %s个好笑' % (voting_up, voting_down, stats_comments, stats_vote))
self.jpgbutton.SetBitmap(self.jpg)
self.jpgbutton.SetPosition(self.jpg_pose)
self.jpgbutton.SetSize(self.jpg_size)
def set_status_text(self, message):
if not self.status_bar.GetStatusText() == message:
self.status_bar.SetStatusText(message)
def next_item(self, event):
if self.current_page_item_count > self.current_item:
self.current_item += 1
else:
self.current_page += 1
self.current_item = 1
if str(self.current_page) in self.page_data:
self.current_page_data = self.page_data[str(self.current_page)]
self.show_info()
@property
def current_page_item_count(self):
return len(self.current_page_data.keys())
def previous_item(self, event):
if self.current_item > 1: # 当前页面大于1,到当前页前一条
self.current_item -= 1
else: # 到前一页最后一条
if self.current_page > 1: # 有前一页
self.current_page -= 1
self.current_page_data = self.page_data[str(self.current_page)]
self.current_item = max(self.current_page_data.keys())
else:
self.set_status_text(u'前面没有页了')
self.show_info()
def load_info(self):
if not self.current_page_data:
self.current_page_data = self.page_data.get(str(self.current_page), {})
if self.current_item in self.current_page_data.keys():
self.current_item_data = self.current_page_data[self.current_item]
if self.current_item_data.get('jpg'):
jpg_path = 'tmp_jpg/' + self.current_item_data.get('jpg_name')
jpg = wx.Image(jpg_path, type=wx.BITMAP_TYPE_JPEG)
W, H = jpg.GetWidth(), jpg.GetHeight()
if (W > 400 and H <= 500) or (W > H and W > 400 and H > 500):
H = 400 * H / W
W = 400
elif (W <= 400 and H > 500) or (400 < W < H and H > 500):
W = 500 * W / H
H = 500
self.jpg_pose = (300 - W / 2, 420 - H / 2)
self.jpg_size = (W, H)
self.jpg = jpg.Rescale(W, H).ConvertToBitmap()
else:
jpg_path = 'tmp_jpg/def.jpg'
self.jpg_pose = (150, 270)
self.jpg_size = (301, 300)
self.jpg = wx.Image(jpg_path, type=wx.BITMAP_TYPE_JPEG).ConvertToBitmap()
else:
jpg_path = 'tmp_jpg/def.jpg'
self.jpg_pose = (150, 270)
self.jpg_size = (301, 300)
self.jpg = wx.Image(jpg_path, type=wx.BITMAP_TYPE_JPEG).ConvertToBitmap()
def create_menu_bar(self):
menu_bar = wx.MenuBar()
for each in self.menu_data:
menu_label = each[0]
menu_item = each[1:]
menu_bar.Append(self.create_menu(menu_item), menu_label)
self.SetMenuBar(menu_bar)
return menu_bar
def create_menu(self, menu_data):
menu = wx.Menu()
kind = wx.ITEM_NORMAL
for _data in menu_data:
if len(_data) == 3:
label, status, handler = _data
else:
label, status, handler, kind = _data
if not label:
menu.AppendSeparator()
continue
menu_item = menu.Append(-1, label, status, kind)
self.Bind(wx.EVT_MENU, handler, menu_item)
return menu
def set_category(self, event):
categorys = {
'8hr': '热门',
'hot': '24小时',
'imgrank': '热图',
'text': '文字',
'history': '穿越',
'pic': '糗图',
'textnew': '新鲜'
}
categorys = {categorys[key]: key for key in categorys}
menu_bar = self.GetMenuBar()
item_id = event.GetId()
item = menu_bar.FindItemById(item_id)
category = categorys.get(item.GetLabel())
self.category = category
self.page_data = {}
self.current_page_data = {}
self.current_item_data = {}
self.current_page = 1
self.current_page = 1
self.show_info()
self.stop_spider()
self.start_spider()
def defa(self):
pass
@property
def menu_data(self):
return (
(u"文件",
(u"新建", u"新建窗口", self.defa),
(u'关闭', u'关闭当前窗口', self.defa)),
(u'编辑',
(u'复制', u'复制结果到剪切板', self.defa),
(u'粘贴', u'粘贴剪切板内容到输入框', self.defa),
(u'清空剪切板', u'清空剪切板', self.defa),
('', '', ''),
(u'选项', u'选项', self.defa)),
(u'分类',
(u'热门', u'热门', self.set_category, wx.ITEM_RADIO),
(u'24小时', u'24小时', self.set_category, wx.ITEM_RADIO),
(u'热图', u'热图', self.set_category, wx.ITEM_RADIO),
(u'文字', u'文字', self.set_category, wx.ITEM_RADIO),
(u'穿越', u'穿越', self.set_category, wx.ITEM_RADIO),
(u'糗图', u'糗图', self.set_category, wx.ITEM_RADIO),
(u'新鲜', u'新鲜', self.set_category, wx.ITEM_RADIO)),
(u'帮助',
(u'关于', u'关于', self.defa))
)
########################################################################
def start_spider(self):
self.lock.set()
sp = SpiderThread(self.category, self.page_data, self.current_page, self.current_item, self.show_info,
self.set_status_text, lock=self.lock, name=self.category)
sp.setDaemon(1)
sp.start()
self.spider_thread = sp
self.set_status_text('%s 爬虫启动。' % self.category)
def stop_spider(self):
self.lock.clear()
while True:
if self.spider_thread.is_alive():
time.sleep(1)
else:
self.set_status_text('%s 爬虫成功退出' % self.category)
break
class MyApp(wx.App):
"""
重构APP
"""
# ----------------------------------------------------------------------
def __init__(self, page_data, current_page, current_item):
"""Constructor"""
wx.App.__init__(self)
frame = MyFrame(page_data, current_page, current_item)
frame.start_spider()
frame.Center()
frame.Show()
self.page_data = page_data
self.current_page = current_page
self.current_item = current_item
self.frame = frame
def MainLoop(self):
return super(MyApp, self).MainLoop()
########################################################################
if __name__ == '__main__':
page_data = {} # 数据
current_page = 1 # 当前页数,从1开始
current_item = 1 # 当前条数,从1开始
app = MyApp(page_data, current_page, current_item)
app.MainLoop()
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