如何对一个图片通过base64，将之转为字符串格式，便于存入数据库中

import base64

class B64Handle:
    def __init__(self):
        pass
    def convert_b64(self,img):
        with open(img,'rb') as f:
            base64_data=base64.b64encode(f.read())
            s=base64_data.decode()
            return s

if __name__=='__main__':
    hand=B64Handle()
    A=hand.convert_b64('WX20211229-152303.png')
    print(A)