保存模型时Keras“ TypeError：无法序列化'_io.TextIOWrapper'对象”

Question

我试图在Keras中保存一个模型，它包含多个输入并使用DenseNet，并添加了其他一些层。

在代码末尾，我尝试保存体系结构和权重，似乎权重已正确保存，但是当我尝试保存体系结构时，出现了一条我不理解的错误消息。

请帮助。

命令是：

            public IEnumerable<Employee> SelectedEmployees
            {
                get
                {
                    selectedEmployees = Employees.Where(o => o.IsSelected).ToList();
                    return selectedEmployees;
                }
                set
                {
                    selectedEmployees = value;
                    OnPropertyChanged("SelectedEmployees");
                }
            }

            public bool IsSelected
            {
                get
                {
                    //Application.Current.Dispatcher.BeginInvoke(new Action(() => MessageBox.Show("SELE")));

                    return isSelected;
                }
                set
                {
                    isSelected = value;
                    OnPropertyChanged("IsSelected");
                }
            }

            public ObservableCollection<Employee> Employees
            {
                get
                {
                    return employees;
                }
                set
                {
                    employees = value;
                    OnPropertyChanged("Employees");
                }
            }

            public ICollectionView FilteredCollection
            {
                get
                {
                    return filteredCollection;
                }
                set
                {
                filteredCollection = value;
                OnPropertyChanged("FilteredCollection");
                }
            }


            public Employee SelectedEmployee
            {
                get
                {
                    //Application.Current.Dispatcher.BeginInvoke(new Action(() => MessageBox.Show(selectedEmployee.SelectedEmployee.ToString())));
                    return selectedEmployee;
                }
                set
                {
                    selectedEmployee = value;

                    if (selectedEmployee == null)
                    {
                        ModeOfExecuting = "Searching / Adding Mode";
                        OnPropertyChanged("SelectedEmployee");
                        OnPropertyChanged("ModeOfExecuting");
                        OnPropertyChanged("FilteredCollection");
                    }

                    if (selectedEmployee != null)
                    {
                        //MessageBox.Show(Employees[SelectedIndex.GetValueOrDefault()].EmployeeName.ToString());

                        //List<Employee> FilteredCollectionList = FilteredCollection.Cast<Employee>().ToList();
                        //MessageBox.Show(FilteredCollectionList[0].EmployeeName);
                        if (selectedEmployee.EmployeeName != string.Empty)
                        {
                            RememberValueEmployeeName = selectedEmployee.EmployeeName;
                            DynamicSearchEmployeeName = RememberValueEmployeeName;
                        }
                        if (selectedEmployee.EmployeeID != null)
                        {
                            RememberValueEmployeeID = selectedEmployee.EmployeeID;
                            DynamicSearchEmployeeID = RememberValueEmployeeID;
                        }
                        if (selectedEmployee.EmployeeSalary != null)
                        {
                            RememberValueEmployeeSalary = selectedEmployee.EmployeeSalary;
                            DynamicSearchEmployeeSalary = RememberValueEmployeeSalary.ToString();
                        }
                        if (selectedEmployee.EmployeeDesigner != string.Empty)
                        {
                            RememberValueEmployeeDesigner = selectedEmployee.EmployeeDesigner;
                            DynamicSearchEmployeeDesigner = RememberValueEmployeeDesigner;
                        }
                        if (selectedEmployee.EmployeeEmailID != string.Empty)
                        {
                            RememberValueEmployeeEmailID = selectedEmployee.EmployeeEmailID;
                            DynamicSearchEmployeeEmailID = RememberValueEmployeeEmailID;
                        }

                        ModeOfExecuting = "Editing Mode";

                        OnPropertyChanged("SelectedEmployee");

                    }

                    OnPropertyChanged("SelectedEmployee");
                }
            }

我收到的错误消息是：

# Save the model architecture
with open('model_densenet169_5img_architecture_attention.json', 'w') as f:
    f.write(model.to_json())