python写的百度图片爬虫

学了一下python正则表达式，写一个百度图片爬虫玩玩。

当技术遇上心术不正的人，就成我这样的2B青年了。

python3.6开发。程序已经打包好，下载地址: http://pan.baidu.com/s/1bpalugf 密码：kfk4

#!/usr/local/env python
from tkinter import *
import re,os,requests,hashlib,threading
from PIL import Image

class Application(Frame):
	def __init__(self, master=None):
		Frame.__init__(self, master)
		self.school=threading.local()
		self.pack()
		self.createWidgets()

	def createWidgets(self):
		self.nameLabel=Label(self,text='请输入关键词:')
		self.nameLabel.grid(row=0,sticky=W)

		self.nameInput = Entry(self)
		self.nameInput.grid(row=0,column=1)

		self.picys=IntVar()
		self.Checkbutton = Checkbutton(self,text='图片压缩',variable=self.picys)
		self.Checkbutton.grid(row=1,column=0,columnspan=2,sticky=W)

		self.alertButton = Button(self, text='下载',command=self.gorun)
		self.alertButton.grid(row=1,column=1,sticky=E)

	def cddir(self):
		keyword=self.nameInput.get()
		os.chdir('C:\\Users\\Administrator\\Desktop\\')
		if os.path.exists(keyword) ==False:
			os.mkdir(keyword)
		os.chdir(keyword)

	def gorun(self):
		self.cddir()
		word=self.nameInput.get()
		x=0
		for i in range(5):
			t=threading.Thread(target=self.xiazai,args=(x,word,))
			t.start()
			x+=20
			if i == 4:
				t.join()
				self.delfile()
				if self.picys.get() == 1:
					self.suoxiao()
	def xiazai(self,page,word):
		baidupn=self.school.student=page
		num=1
		for i in range(50):
			url='https://image.baidu.com/search/flip?tn=baiduimage&ie=utf-8'
			payload={'word':word,'pn':baidupn}
			html = requests.get(url,params=payload).text
			regular='"objURL":"(.*?)",'
			pic=re.findall(regular,html)
			baidupn+=100

			for tu in pic:
				try:
					dl=requests.get(tu,timeout=60)
					pic_name=os.path.basename(tu)
					if pic_name in os.walk(os.getcwd()):
						continue
					else:
						if ('?' in pic_name) or ('&' in pic_name) or ('.' not in pic_name):
							pic_name='%s%s' %(num,'.jpg')
						with open(pic_name,"wb") as code:
							code.write(dl.content)
							requests.session().keep_alive = False
							dl.close()
						num+=1
				except requests.exceptions.ConnectionError:
					#print('这张图片下载失败了,图片地址',tu)
					continue

	def suoxiao(self):
		self.cddir()
		filedir=os.walk(os.getcwd())
		for i in filedir:
			for tplb in i[2]:
				if ('jpg' in tplb) or ('jpeg' in tplb):
					try:
						im=Image.open(tplb)
						w,h=im.size
						if w > 500:
							im.thumbnail((w//2,h//2))
							im.save(tplb,'jpeg')
						im.close()
					except OSError:
						print('跳过此文件')

	def md5sum(self,filename):
		f=open(filename, 'rb')
		md5=hashlib.md5()
		while True:
			fb = f.read(8096)
			if not fb:
				break
			md5.update(fb)
		f.close()
		return (md5.hexdigest())

	def delfile(self):
		all_md5={}
		self.cddir()
		filedir=os.walk(os.getcwd())
		for i in filedir:
			for tlie in i[2]:
				if self.md5sum(tlie) in all_md5.values():
					os.remove(tlie)
				else:
					all_md5[tlie]=self.md5sum(tlie)

app=Application()
app.master.title('图片下载器')
app.mainloop()

　　

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