在 python 中导入类型

Question

我有一个名为 types 的模块，其中包含以下代码

def Hello():
    return "Hello World"

但是当我这样做的时候

>>> import types
>>> types.Hello()

它给了我

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'Hello'

这真是把我吓坏了。

Answer 1

types是内置模块，import先搜索内置模块，再查看本地包。

>>> import types
>>> types
<module 'types' from '/usr/lib/python2.7/types.pyc'>

尝试

>>> from . import types

Answer 2

实际上 types 是一个内置模块，它不提供 Hello function.If 你想创建一个服装模块，你需要把它放在你的 python 目录!

请注意，您的模块名称不应与 python 内置模块相同！

Answer 3

切勿将您的模块命名为与 Python 内置模块相同，阅读this section and Naming Convetion 以获得更好的想法。

4.8. Intermezzo: Coding Style

For Python, PEP 8 has emerged as the style guide that most projects adhere to; it promotes a very readable and eye-pleasing coding style. Every Python developer should read it at some point; here are the most important points extracted for you:

Name your classes and functions consistently; the convention is to use CamelCase for classes and lower_case_with_underscores for functions and methods. Always use self as the name for the first method argument (see A First Look at Classes for more on classes and methods).

刚刚从这个部分发布了与您的问题相关的内容。

在 python 中导入类型

import types in python

python

import

module