在安装完tesseract, pytesseract后执行测试命令，发现打印如下错误：

Error opening data file \Program Files (x86)\Tesseract-OCR\tessdata/eng.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory. Failed loading language 'eng' Tesseract couldn't load any languages! Could not initialize tesseract.

不过，费了大半天劲，终于找到了一个靠谱的解决方案。就是在环境变量中新增一个变量TESSDATA_PREFIX，使该变量的值为

D:\Profession\Tesseract-OCR\tessdata 该路径值。我开始是在path变量下，把路径值放在了该变量下，肯定失败。另外，还要重启一下，才能生效。

测试demo

--encoding:utf-8--

        import pytesseract
        from PIL import Image
        
        # image = Image.open(".png")
        image = Image.open('./images/yanzhengma.png')
        
        result = pytesseract.image_to_string(image)
        
        print(result)