import pytesseract
from PIL import Image

image = Image.open('image.png')
print(pytesseract.image_to_string(image))

第一次通过pytesseract调用tesseract时，运行后报错：

1. Traceback(mostrecentcalllast):
2. File "d:\Python36\lib\site-packages\pytesseract\pytesseract.py", line 260, in get_tesseract_version
3. [tesseract_cmd, '--version'], stderr=subprocess.STDOUT 
4. .....(部分省略)
5. pytesseract.pytesseract.TesseractNotFoundError: tesseract.exe is not installed or it's not in your path

根据第4行报错提示，初步怀疑是环境变量的原因

于是检查了本机环境变量的设置，发现都设置无误

再进行判断查看了第2、3行的报错信息：tesseract_cmd --version

于是进入python包lib\site-packages\pytesseract\  修改了pytesseract.py里面的这段源码：

numpy_installed = find_loader('numpy') is not None
if numpy_installed:
    from numpy import ndarray

# CHANGE THIS IF TESSERACT IS NOT IN YOUR PATH, OR IS NAMED DIFFERENTLY
tesseract_cmd = 'tesseract'
RGB_MODE = 'RGB'
OSD_KEYS = {

修改为下面这样：

numpy_installed = find_loader('numpy') is not None
if numpy_installed:
    from numpy import ndarray

# CHANGE THIS IF TESSERACT IS NOT IN YOUR PATH, OR IS NAMED DIFFERENTLY
#tesseract_cmd = 'tesseract'
tesseract_cmd = r'D:\Program Files (x86)\Tesseract-OCR\tesseract.exe'
RGB_MODE = 'RGB'
OSD_KEYS = {

在此运行，能正常识别图片的文字。