类型错误：类型过滤器的对象不可 JSON 序列化 - 嵌套对象

Question

import csv
import json 

def csv_to_json(csvFilePath):
    jsonArray = []
    
    decoded_file = csvFilePath.read().decode('utf-8').splitlines()
   
    #load csv file data using csv library's dictionary reader
    csvReader = csv.DictReader(decoded_file) 
    #convert each csv row into python dict
    for row in csvReader: 
        #add this python dict to json array
        option = [row['option1'], row['option2'], row['option3'], row['option4']]
        option = filter(None, option)
        newJson = {
          'numb': row['numb'],
          'question': row['question'],
          'answer': row['answer'],
          'options': option
        }
        jsonArray.append(newJson)

    print('>>>>>>>jsonArray>>>>>>>', jsonArray)

    jsonString = json.dumps(jsonArray)

    print('>>>>>>>jsonString>>>>>>>', jsonString)

    return jsonArray

错误

TypeError at /path/path
Object of type filter is not JSON serializable

>>>>>>>jsonArray>>>>>>> [{'numb': '1', 'question': 'What does HTML stand for?', 'answer': 'Hyper Text Markup Language', 'options': <filter object at 0x7f3d3459fa00>}, {'numb': '2', 'question': 'What does CSS stand for?', 'answer': 'Cascading Style Sheet', 'options': <filter object at 0x7f3d34317400>}]

如果我# 'options': option从那时起评论newJson它就完美了

Answer 1

正如错误所述，过滤器对象不可序列化。

但有一个清单是

'options': list(option)

但是，我不太清楚您要过滤的内容。具有 None 类型的列表将在 JSON 数组中变为 null