AttributeError: 'ImportFrom' object has no attribute 'getattr'

[DanielGuo1]

I have seen that the error (AttributeError: ‘ImportFrom’ object has no attribute ‘getattr’) has appeared in earlier versions as well
#193
#289

However, the issue also occurs for me with newer versions (<3.0). Here is the complete log:

# Platform:         win32; (Windows-10-10.0.19045-SP0)
# Sphinx version:   7.3.7
# Python version:   3.12.7 (CPython)
# Docutils version: 0.21.2
# Jinja2 version:   3.1.4
# Pygments version: 2.18.0

# Last messages:
#   writing output...
#   
#   building [html]: targets for 5 source files that are out of date
#   updating environment:
#   [new config]
#   18 added, 0 changed, 0 removed
#   
#   reading sources... [  6%]
#   autoapi/app/ar/index
#   

# Loaded extensions:
#   sphinx.ext.mathjax (7.3.7)
#   alabaster (0.7.16)
#   sphinxcontrib.applehelp (2.0.0)
#   sphinxcontrib.devhelp (2.0.0)
#   sphinxcontrib.htmlhelp (2.1.0)
#   sphinxcontrib.serializinghtml (1.1.10)
#   sphinxcontrib.qthelp (2.0.0)
#   sphinx.ext.autodoc.preserve_defaults (7.3.7)
#   sphinx.ext.autodoc.type_comment (7.3.7)
#   sphinx.ext.autodoc.typehints (7.3.7)
#   sphinx.ext.autodoc (7.3.7)
#   sphinx.ext.napoleon (7.3.7)
#   sphinx_autodoc_typehints (unknown version)
#   sphinx.ext.intersphinx (7.3.7)
#   sphinx.ext.autosummary (7.3.7)
#   sphinx.ext.graphviz (7.3.7)
#   sphinx.ext.inheritance_diagram (7.3.7)
#   autoapi.extension (3.2)
#   sphinx.ext.viewcode (7.3.7)
#   myst_parser (4.0.0)
#   sphinx_book_theme (1.1)
#   pydata_sphinx_theme (0.16.0)

  File "C:\Users\ABC\.conda\envs\project_A\Lib\site-packages\autoapi\inheritance_diagrams.py", line 14, in _do_import_class
    target = (target.getattr(path_part) or (None,))[0]
              ^^^^^^^^^^^^^^
AttributeError: 'ImportFrom' object has no attribute 'getattr'

[AWhetter]

Please can you provide a the code (or a reduced sample of code) that is AutoAPI documenting when this exception occurs.

[lji-ilm]

I can repro this error on a private code base and i'm trying to work out a public reproduction.

to my limited reading the cause appears to be that:

sphinx-autoapi/autoapi/inheritance_diagrams.py

Lines 10 to 23 in 4433b17

	try:
	target = astroid.MANAGER.ast_from_module_name(currmodule)
	while target and path_stack:
	path_part = path_stack.pop()
	target = (target.getattr(path_part) or (None,))[0]
	while isinstance(target, (astroid.ImportFrom, astroid.Import)):
	try:
	target = target.do_import_module(path_part)
	except astroid.AstroidImportError:
	target = target.do_import_module()
	target = (target.getattr(path_part) or (None,))[0]
	break
	except astroid.AstroidError:
	target = None

Upon an astroid.AstroidImportError, target went through the following:

target = target.do_import_module() # target is a module
target = (target.getattr(path_part) or (None,))[0] # target is an ImportFrom
break # go out of the inner loop
while target and patch_stack # target is not None 
target = (target.getattr(path_part) or (None,))[0] # Exception

I patched my local copy by changing line 22 into a catch all except Exception: target = None and got passed this, but this patch would probably miss out contents.