python代码运行中出现utils库不完善的问题

当python检测到一个目录下存在__init__.py文件时，python就会把它当成一个模块(module)。

__init__.py可以是一个空文件，也可以有非常丰富的内容。

d:\>pip install utils
Collecting utils
  Downloading utils-1.0.1-py2.py3-none-any.whl (21 kB)
Installing collected packages: utils
Successfully installed utils-1.0.1

d:\>python
Python 3.8.10 (tags/v3.8.10:3d8993a, May  3 2021, 11:48:03) [MSC v.1928 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from utils import get_ACC_NMI
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'get_ACC_NMI' from 'utils' (C:\Software\Python\lib\site-packages\utils\__init__.py)

There's no `get_ACC_NMI` defined in library `utils`.

• Where you get this statement ? from utils import get_ACC_NMI, or
• Where you get this name ? get_ACC_NMI