写了一个python方法将图片url转换成带前缀的base64

开发api的时候经常需要把图片url转base64,专门写了一个方法

def url_to_base64_with_prefix(image_url):
    # 发送 GET 请求来获取图片
    response = requests.get(image_url)
    if response.status_code == 200:
        # 获取图片的二进制数据
        image_data = response.content
        # 通过二进制数据来确定图片格式
        image_format = Image.open(BytesIO(image_data)).format.lower()
        # 将图片数据转换成Base64编码
        base64_image = base64.b64encode(image_data).decode('utf-8')
        # 根据图片格式来添加相应的前缀
        if image_format == "jpeg":
            base64_image_with_prefix = f"data:image/jpeg;base64,{base64_image}"
        elif image_format == "png":
            base64_image_with_prefix = f"data:image/png;base64,{base64_image}"
        elif image_format == "gif":
            base64_image_with_prefix = f"data:image/gif;base64,{base64_image}"
        elif image_format == "bmp":
            base64_image_with_prefix = f"data:image/bmp;base64,{base64_image}"
        else:
            # 如果不是常见的格式，可以使用通用的"data:image;base64,"前缀
            base64_image_with_prefix = f"data:image/{image_format};base64,{base64_image}"

        return base64_image_with_prefix
    else:
        print("无法下载图片，状态码: ", response.status_code)
        return None