为什么使用 django python 时 cv2.imread 没有返回？

Question

我在 django 中使用 opencv-python，但是当我使用 cv2.imread 时，它只返回 nonetype。我该如何解决这个问题？

from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework import status
from . import serializers
from .serializers import call_serializers
from .apps import BmiEstimationConfig
import pickle
from skimage import io

class BMIEstimationView(APIView):
    serializer_class = serializers.call_serializers

    def post(self, request):
        serializer = serializers.call_serializers(data=request.data)
        serializer.is_valid(raise_exception=True)
        file = request.FILES['file']

        import cv2
        image = cv2.imread(file)
        print(image)```

got this :
> TypeError: bad argument type for built-in operation

Answer 1

请确认 cv2.imread() 的语法

Syntax: cv2.imread(path, flag)

Parameters:
path: A string representing the path of the image to be read.
flag: It specifies the way in which image should be read. It’s default value is cv2.IMREAD_COLOR

Return Value: This method returns an image that is loaded from the specified file.

还请提供图片的完整路径

查看示例click here

示例图片：