Not showing preview for python classes imported in __init__.py

[ApolloBian]

Issue Details

Preview shows up fine for normal python classes / functions. But if the classes are imported in __init__.py and used elsewhere, YCM will mark these classes as m instead of c and will not show completion for them.

YCM version

Latest version (9dee2b)

Steps to reproduce:

import torch.nn as nn
import torch
a = nn.Linear(...) # does't show preview
a = torch.functional.argmax(...) # preview shows fine

Also, :YcmCompleter GetDoc command works fine on nn.Linear().

A simpler reproduction which narrows things down

make a miniproject like this:

├── foo.py
└── TestClass
    ├── __init__.py
    └── TestClass.py

in TestClass.py:

#!/usr/bin/env python
class WeakModule:
    def __init__(self):
        pass

in __init__.py:

#!/usr/bin/env python
from TestClass import WeakModule

in foo.py

import TestClass
a = TestClass.WeakModule() # won't show preview

[micbou]

This is a duplicate of #3291. See my comment there.

Your minimal reproducible case is a different issue. It's not valid code on Python 3 as running foo.py raises the following error:

ImportError: cannot import name 'WeakModule' from 'TestClass'

In that case, YCM returns WeakModule as a module because when a symbol is not found, Jedi (the completion engine used by YCM for Python) assumes that it's a module.

While the code is running under Python 2, Jedi still returns WeakModule as a module so you could consider this as a Jedi bug on Python 2. Feel free to report the issue on the Jedi tracker.

[ApolloBian]

@micbou thank you for the reply. Temporarily deleting these 6 lines makes things work fine again.