问如何将excel文件转换为base64，然后在python中将base64转换回excel？

EN

import base64

def open_target_file(target_path):
    with open(target_path,"rb") as excel_file:
        return excel_file.read()

def encode_file(excel_file):
    return base64.b64encode(excel_file)

def decode_file():
    return base64.b64decode(excel_file)

your_excel_path = ""
destiny_path = ""

excel_file = open_target_file()
encoded_excel = encode_file(excel_file)
decoded_excel = decode_file(encoded_excel)

with open(destiny_path, "wb") as decoded_file:
    decoded_file.write(decoded_excel)