Question

我用Google搜索过，我似乎无法找到一个明确的例子。我为Job类创建了一个名为job.py的文件。

class Job(object):
    title = ""
    pay = ""
    description = ""

    def __init__(self, title, pay, description):
        self.title = title
        self.pay = pay
        self.description = description

    def getNoobiness(self):
        return self.title

但是当我在同一目录中的测试文件中尝试这个时：

import job

job = Job("Fun Job", "7 elephants", "You will have much fun")

我收到此错误：

Traceback (most recent call last):
  File "test.py", line 3, in <module>
    job = Job("Fun Job", "7 elephants", "You will have much fun")
NameError: name 'Job' is not defined

Answer 1

您需要从文件中导入该类：

from job import Job

如果您想保留当前导入，请执行此操作：

job.Job(...)

Answer 2

您正在导入包含班级job的模块Job。但是，Python并不知道这一点;截至目前，它不知道Job在哪里。

要解决此问题，请将Job放在前面，明确告诉Python job.：

import job
new_job = job.Job("Fun Job", "7 elephants", "You will have much fun")

现在，Python知道您正在使用Job模块中的job类。

或者，更简洁的解决方案是明确导入Job：

from job import Job
job = Job("Fun Job", "7 elephants", "You will have much fun")

如何导入外部类并在Python中创建一个对象？

2 个答案: