python 获取图片验证码中文字

cfsky

　　根据现成的开源项目 http://code.google.com/p/pytesser/改写
　　在window上用easy_install安装不上  看了下源码发现代码很少  于是就想自己改写一下
　　添加支持网络图片的直接解析
　　


#coding:utf-8
#import sys
#reload(sys)
#sys.setdefaultencoding('utf-8')
import subprocess,urllib2,tempfile
import os,time
tesseract_exe_name = 'tesseract' # Name of executable to be called at command line
temp_dir_name = tempfile.gettempdir() # Name of executable to be called at command line
def call_tesseract(input_filename, output_filename):
args = [tesseract_exe_name, input_filename, output_filename]
proc = subprocess.Popen(args)
retcode = proc.wait()
def image_file_to_string(filename):
image_file_path = filename
text_file_path = '%s%s%sout' %(temp_dir_name,os.path.sep,time.time())
try:
call_tesseract(image_file_path,text_file_path);
text = file(text_file_path+'.txt').read()
if text.find("Error") != -1:
text = None
return text
finally:
if(os.path.exists(text_file_path+'.txt')):
os.remove(text_file_path+'.txt')
def image_url_to_string(url):
image_file_path = '%s%s%sin' %(temp_dir_name,os.path.sep,time.time())
try:
urlinfo = urllib2.urlopen(url, None,3);
if not urlinfo.headers['Content-Type'].startswith('image'):
return None
f = open(image_file_path,'wb')
f.write(urlinfo.read())
f.close()
return image_file_to_string(image_file_path);
finally:
if(os.path.exists(image_file_path)):
os.remove(image_file_path);
print image_file_to_string('D:\\pytesser_v0.0.1\\fonts_test.png')