AttributeError: 'list' object has no attribute 'tolist'

Question

这是一个两部分的问题，

import face_recognition
import os
import json
loadarr=[]
encodearr=[]
for i in range(0, 4):
    loadarr.append(face_recognition.load_image_file( "brad"+str(i+1)+".jpg"))
    encodearr.append(face_recognition.face_encodings(loadarr[i])[0])
encodearr = encodearr.tolist()
# print(encodearr)
encodedDic = {"des": encodearr}

with open("sample.json", "w") as outfile:
    json.dump(encodedDic,outfile)

当我尝试将列表 encodearr 转换为键 "des" 的值时（没有 .tolist()）它显示
TypeError: Object of type ndarray is not JSON serializable 。然后我添加了 .tolist() 来对 arr 进行编码，如图所示。它显示AttributeError: 'list' object has no attribute 'tolist'，brad1到brad5是目录中的jpg文件。

Answer 1

我使用 numpy 做了一个解决方法。

import face_recognition
import os
import json
import numpy as np
encodearr=[]
for i in range(0, 4):
    load=face_recognition.load_image_file( "brad"+str(i+1)+".jpg")
    encodearr.append(face_recognition.face_encodings(loadarr)[0])
reshapped_array = np.reshape(encodearr,(total_images,128)   //each image is an array consisting 128 images
encodedDic = {"des": reshapped_array }
with open("sample.json", "w") as outfile:
    json.dump(encodedDic,outfile)

AttributeError: 'list' object has no attribute 'tolist'

AttributeError: 'list' object has no attribute 'tolist'

attributeerror

json-deserialization