python3验证码识别_Python3.4实现的12306最新验证码识别详解

import ssl

import json

from PIL import Image

import urllib

import re

import urllib.request as urllib2

if hasattr(ssl, '_create_unverified_context'):

ssl.create_default_context = ssl._create_unverified_context

UA = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36"

pic_url = "https://kyfw.12306.cn/otn/passcodeNew/getPassCodeNew?module=login&rand=sjrand&0.21191171556711197"

def get_img():

resp = urllib2.urlopen(pic_url)

raw = resp.read()

with open('./tmp.jpg', 'wb') as fp:

fp.write(raw)

return Image.open('./tmp.jpg')

def get_sub_img(im, x, y):

assert 0 <= x <= 3

assert 0 <= y <= 2

WITH = HEIGHT = 68

left = 5 + (67 + 5) * x

top = 41 + (67 + 5) * y

right = left + 67

bottom = top + 67

return im.crop((left, top, right, bottom))

def baidu_stu_lookup(im):

url = "http://stu.baidu.com/n/image?fr=html5&needRawImageUrl=true&id=WU_FILE_0&name=233.png&type=image%2Fpng&lastModifiedDate=Mon+Mar+16+2015+20%3A49%3A11+GMT%2B0800+(CST)&size="

im.save("./query_temp_img.png")

raw = open("./query_temp_img.png", 'rb').read()

url = url + str(len(raw))

req = urllib2.Request(url, raw, {'Content-Type': 'image/png', 'User-Agent': UA})

resp_url = urllib2.urlopen(req).read()

url = "http://stu.baidu.com/n/searchpc?queryImageUrl=" + urllib2.quote(resp_url)

req = urllib2.Request(url, headers={'User-Agent': UA})

resp = urllib2.urlopen(req)

html = resp.read().decode()

return baidu_stu_html_extract(html)

def baidu_stu_html_extract(html):

pattern = re.compile(r"keywords:'(.*?)'")

matches = pattern.findall(html)

if not matches:

return '[UNKOWN]'

json_str = matches[0]

json_str = json_str.replace('\\x22', '"').replace('\\\\', '\\')

result = [item['keyword'] for item in json.loads(json_str)]

return '|'.join(result) if result else '[UNKOWN]'

if __name__ == '__main__':

im = get_img()

for y in range(2):

for x in range(4):

im2 = get_sub_img(im, x, y)

result = baidu_stu_lookup(im2)

print((y, x), result)

改自https://github.com/andelf/fuck12306/blob/master/fuck12306.py

Python 3.4 可用