pyocr tesseract 系统找不到指定的文件 问题解决办法

FileNotFoundError: [WinError 2] 系统找不到指定的文件。

废话不多说，上代码

from PIL import Image
from pyocr import tesseract

tesseract.TESSERACT_CMD = r'C:\Program Files\Tesseract-OCR\tesseract.exe'
print(tesseract.image_to_string(Image.open('test.png')))

解决思路：安装完成tesseract-ocr，之后心里就有一个疑问，pyocr库如何找到tesseract-ocr引擎并调用，果然出错！！那么pyocr的tesseract库肯定有相应的类似环境变量的属性，于是

dir(tesseract)

返回结果如下：
[‘CharBoxBuilder’, ‘DigitBuilder’, ‘ReOpenableTempfile’, ‘TESSDATA_EXTENSION’, ‘TESSERACT_CMD’, ‘TesseractError’, ‘all’, ‘builtins’, ‘cached’, ‘doc’, ‘file’, ‘loader’, ‘name’, ‘package’, ‘spec’, ‘_set_environment’, ‘builders’, ‘can_detect_orientation’, ‘cleanup’, ‘codecs’, ‘detect_orientation’, ‘digits_only’, ‘g_creation_flags’, ‘g_subprocess_startup_info’, ‘g_version’, ‘get_available_builders’, ‘get_available_languages’, ‘get_name’, ‘get_version’, ‘image_to_string’, ‘is_available’, ‘logger’, ‘logging’, ‘os’, ‘psm_parameter’, ‘run_tesseract’, ‘shutil’, ‘subprocess’, ‘sys’, ‘tempfile’]
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