TypeError: defined function got an unexpected keyword argument 'many

TypeError: defined function got an unexpected keyword argument 'many

我的 python 应用程序有问题。我正在学习 posted 的教程:https://auth0.com/blog/developing-restful-apis-with-python-and-flask/

我尝试通过电源post数据到应用程序-shell:

$params = @{amount=80; description='test_doc'}
Invoke-WebRequest -Uri http://127.0.0.1:5000/incomes -Method POST -Body ($params|ConvertTo-Json) -ContentType "application/json"

当我 运行 PS 脚本时,我的 python 应用程序出现错误:

TypeError: make_income() got an unexpected keyword argument 'many'

我的代码如下所示:

from marshmallow import post_load

from .transaction import Transaction, TransactionSchema
from .transaction_type import TransactionType


class Income(Transaction):
  def __init__(self, description, amount):
    super(Income, self).__init__(description, amount, TransactionType.INCOME)

  def __repr__(self):
    return '<Income(name={self.description!r})>'.format(self=self)


class IncomeSchema(TransactionSchema):
  @post_load
  def make_income(self, data):
    return Income(**data)

我如何将参数 many 放入我的函数中?这是棉花糖问题吗?

我尝试添加 ** 但我得到同样的错误:

 def make_income(self, **data):
    return Income(**data)

我也试过了

def make_income(self, data, **kwargs):
    return Income(**data)

这是我的 transaction.py 文件

import datetime as dt

from marshmallow import Schema, fields


class Transaction():
  def __init__(self, description, amount, type):
    self.description = description
    self.amount = amount
    self.created_at = dt.datetime.now()
    self.type = type

  def __repr__(self):
    return '<Transaction(name={self.description!r})>'.format(self=self)


class TransactionSchema(Schema):
  description = fields.Str()
  amount = fields.Number()
  created_at = fields.Date()
  type = fields.Str()

在 marsmallow 3 中,装饰方法(pre/post_dump/load,...)必须包含未知的 kwargs。

class IncomeSchema(TransactionSchema):
  @post_load
  def make_income(self, data, **kwargs):
    return Income(**data)

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