一個簡單的識別驗證碼，只能識別簡單的

1：pip3 install pytesseract

2：安裝tesseract-ocr-setup-4.00.00dev 地址：http://digi.bib.uni-mannheim.de/tesseract/tesseract-ocr-setup-4.00.00dev.exe

3：環境變量：name：TESSDATA_PREFIX  value：C:\Program Files (x86)\Tesseract-OCR\tessdata

　　C:\Program Files (x86)\Tesseract-OCR

4.測試代碼

import pytesseract
from PIL import Image
from PIL import ImageEnhance
def getyangzhengma(filename):
    image = Image.open(filename)
    imgry = image.convert('L')
    sharpness =ImageEnhance.Contrast(imgry)
    sharp_img = sharpness.enhance(1.0)
    sharp_img.save("image_code.jpg")
    im = Image.open('image_code.jpg')
    vcode = pytesseract.image_to_string(im)
    return vcode