使用的12306验证码识别库 已经下载chi_sim.traineddata
环境win7，python2.7

$ python fuck12306.py
OCR Question:
Traceback (most recent call last):
  File "fuck12306.py", line 151, in <module>
    print 'OCR Question:', ocr_question_extract(im)
  File "fuck12306.py", line 112, in ocr_question_extract
    return pytesseract.image_to_string(im, lang='chi_sim').strip()
  File "d:\python27\lib\site-packages\pytesseract\pytesseract.py", line 164, in
image_to_string
    raise TesseractError(status, errors)
pytesseract.pytesseract.TesseractError: (255, '')