python爬虫——爬取tuchong网站美图

图虫网站的图片质量非常搞，、私人珍藏也好，做壁纸也好，都是非常不错的选择  图虫主页传送门

本文从这个网站的标签页中的题材类型为例来进行爬取

根据本程序，基本上可以爬取这个网站所有的图片

#!/usr/bin/python
#coding:utf-8

import urllib2,time,uuid,urllib,os,sys,re
from bs4 import BeautifulSoup
reload(sys)
sys.setdefaultencoding('utf-8')

#获得网页内容
def getHtml(url):
	try:
		print url
		html = urllib2.urlopen(url).read()#.decode('utf-8')#解码为utf-8
	except:
		return
	return html

#获取主页下子页面地址	url,以及作者名字
def getUrls(html):
	if not html:
		print 'nothing can be found'
		return
	print 'start find url'
	mylist=[]
	soup=BeautifulSoup(html,'lxml')
	try:
		items=soup.find_all("div",{"class":"post-collage"})
		print len(items)
	
		for item in items:
			alist={}

			if item.find('a',{"data-location":"content"}):
				newurl=item.find('a',{"data-location":"content"}).get('href')
				alist['url']=newurl

			if item.find('a',{"class":"site-anchor"}):
				author= item.find('a',{"class":"site-anchor"}).text
				alist['author']=author

			mylist.append(alist)			
	except:
		return None
	return mylist
	
	
#获取图片rul地址	
def getImagUrl(html):
	if not html:
		print 'nothing can be found'
		return
	#print 'start find imgurl'
	ImagUrlList=[]
	soup=BeautifulSoup(html,'lxml')
	#print 'start find imgurl'
	items=soup.find("div",{"class":"figures-wrapper"}).find_all('img',{'class':'img-responsive copyright-contextmenu'})
	for item in items:
		 imgurl=item.get('src')
		 ImagUrlList.append(imgurl)
	return ImagUrlList

	
	
#下载图片到本地
def download(author,ImagUrlList , typename,pageNo):   
	#定义文件夹的名字
	x = time.localtime(time.time())
	foldername = str(x.__getattribute__("tm_year"))+"-"+str(x.__getattribute__("tm_mon"))+"-"+str(x.__getattribute__("tm_mday"))
	download_img=None
	for imgurl in ImagUrlList:
		picpath = 'TuChong/%s/%s/%s/%s'  % (foldername,typename,str(pageNo),author)
		filename = str(uuid.uuid1())
		if not os.path.exists(picpath):
			os.makedirs(picpath)               
		target = picpath+"/%s.jpg" % filename
		print "The photos location is:"+target
		download_img = urllib.urlretrieve(imgurl, target)#将图片下载到指定路径中
		time.sleep(1)
		print(imgurl)
	return download_img
	
#退出程序
def myquit():
	print "Bye Bye!"
	exit(0)

#输入参数
def control_func():
	print '''
			*****************************************
			**    Welcome to Spider of TUCHONG     **
			**      Created on 2017-3-15           **
			**      @author: Jimy                  **
			*****************************************'''
			
	
	print '''
			可选择类型如下：
			***********************************************
			**  1:'人像',2:'风光',3:'城市',4:'纪实',     **
			**  5:'街拍',6:'旅行',7:'美女',8:'人文',     **
			**  9:'建筑',10:'自然',11:'夜景',12:'静物'   **
			**  13:'少女',14:'花卉',15:'光影',16:'动物'  **
			**  17:'植物',18:'儿童',19:'生活',20:'私房'  **
			***********************************************'''
	typenum = raw_input("Input the page number you want to choose (1-20),please input 'quit' if you want to quit\
						 请输入要选择的类型前面的额数字，范围为（1-20），如果退出，请输入Q>>>\n")
	while not typenum.isdigit() or int(typenum) > 20 or  int(typenum) < 1:
		if typenum == 'Q':
			myquit()
		print "Param is invalid , please try again."
		typenum = raw_input("Input the page number you want to scratch >")
		
	pageNo = raw_input("Input the page number you want to scratch (1-50),please input 'quit' if you want to quit\
						请输入要爬取的页面，范围为（1-50），如果退出，请输入Q>>>\n")
	while not pageNo.isdigit() or int(pageNo) > 50 or  int(typenum) < 1:
		if pageNo == 'Q':
			myquit()
		print "Param is invalid , please try again."
		pageNo = raw_input("Input the page number you want to scratch >")
	return pageNo,typenum

if __name__ == '__main__':
	typeOfmydownload=['人像','风光','城市','纪实','街拍','旅行','美女','人文','建筑','自然','夜景','静物','少女','花卉','光影','动物','植物','儿童','生活','私房']
	pageNo,typenum= control_func()
	#针对图虫人像模块来爬取
	targeturl="http://tuchong.com/tags/"+typeOfmydownload[int(typenum)-1]+"/?page="+str(pageNo)
	html = getHtml(targeturl)
	urllist=getUrls(html)
	print len(urllist)	
	for imgurl in urllist:
		imghtml=getHtml(imgurl['url'])
		imglist=getImagUrl(imghtml)
		print len(imglist)
		download(imgurl['author'],imglist,typeOfmydownload[int(typenum)-1],pageNo)