导入模块时出现基本 python 错误 - 获取 modulenotfound 错误

Question

I'm doing something basic with python, and I'm getting a pretty common error, but not able to find exactly what's wrong. I'm trying to use a custom module (built by someone else). I have the folder structure like this:

There is the test folder, and I have a file testing.py within that:

The contents of testing.py is:

from util import get_data, plot_data
fruits = ["apple", "banana", "cherry"]
for x in fruits:
  print(x)

When I run this file, using python testing.py, I get this:

I went through the other questions that speak about paths, and this looks fine, so not sure what I am missing here. My environment is setup using conda, and the environment is active.

EDIT

As per @allan-wind, I made the relative edit, which got me past the error, but now getting different errors:

I tried the relative import, and it got past that error, but then it is now throwing this error:

Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\envs\ml4t\lib\multiprocessing\context.py", line 190, in get_context
    ctx = _concrete_contexts[method]
KeyError: 'fork'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "grade_analysis.py", line 21, in <module>
    from grading.grading import (

  File "E:\_Repo\GT\CS7646\mls4tsp23\grading\grading.py", line 15, in <module>
    multiprocessing.set_start_method('fork')

  File "C:\ProgramData\Anaconda3\envs\ml4t\lib\multiprocessing\context.py", line 246, in set_start_method
    self._actual_context = self.get_context(method)
  File "C:\ProgramData\Anaconda3\envs\ml4t\lib\multiprocessing\context.py", line 238, in get_context
    return super().get_context(method)
  File "C:\ProgramData\Anaconda3\envs\ml4t\lib\multiprocessing\context.py", line 192, in get_context
    raise ValueError('cannot find context for %r' % method)
ValueError: cannot find context for 'fork'

`

Answer 1

There are a number of ways to specify how to find modules:

1. Use a relative import :

from .util import get_data, plot_data

2. Set the environment variable PYTHONPATH includes the directory where you module resides.

3. See sys.meta_path

Answer 2

Seems like the script was meant to be run from a different directory. People don't usually name a top level module utils . You could try finding a subdirectory of the custom module with a utils dir and running the script from there.

On another note, if this is all the content the script has, it is probably of no real significance and can be casually ignored. The import is never used in the code. The code so far seems to basically do nothing.

Answer 3

Just place utils in the same folder as your testing.py and the python interpreter you put that directory in your path. Other solutions would be to place utils in a directory that is already in your path, since if thats not the case, you cant import from "above" the current directory