为什么我不能将列表作为新行附加到 csv？

Question

所以我收到了这个错误：

self.list_of_employees.write(new_employee_data)
AttributeError: 'str' object has no attribute 'write'

我不明白我的代码有什么问题：

def add_employee(self, new_employee):
    new_employee_data = [new_employee.employee_id, new_employee.name, new_employee.phone, new_employee.age]
    with open(self.list_of_employees, 'r+') as file1:
        existing_lines = csv.reader(file1)
        for row in existing_lines:
            if new_employee_data in row:
                print("Sorry, the employee is already exist.")
                return
        self.list_of_employees.write(new_employee_data)

如果有任何帮助，我将不胜感激！

Answer 1

该函数似乎是更大类的一部分。那是对的吗？错误消息表明self.list_of_employees 是一个字符串，这与open() 的用法一致。 Python 字符串没有.write() 方法。

file1 是一个文件句柄，这是 .write() 所期望的：

def add_employee(self, new_employee):
    new_employee_data = [new_employee.employee_id, new_employee.name, new_employee.phone, new_employee.age]
    with open(self.list_of_employees, 'r+') as file1:
        existing_lines = csv.reader(file1)
        for row in existing_lines:
            if new_employee_data in row:
                print("Sorry, the employee is already exist.")
                return
        file1.write(new_employee_data)