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https://github.com/bringout/oca-ocb-core.git
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dd3f495ba4
Convert odoo.addons.__path__ to list before concatenation with [root_path]
to fix TypeError when using Python 3.7+ namespace packages.
Error: unsupported operand type(s) for +: '_NamespacePath' and 'list'
Location: odoo/tools/misc.py:169
Added documentation explaining the fix in docs/PATCH_ADDONS_PATH.md
🤖 assisted by claude
48 lines
1.4 KiB
Markdown
48 lines
1.4 KiB
Markdown
# Fix for _NamespacePath Concatenation Error
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## Issue
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After upgrading, Odoo failed to start with the following error:
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```
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TypeError: unsupported operand type(s) for +: '_NamespacePath' and 'list'
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```
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This occurred in `odoo/tools/misc.py:169` in the `file_path()` function.
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## Root Cause
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In Python 3.7+, namespace packages use `_NamespacePath` objects for the `__path__` attribute. This special type cannot be directly concatenated with a Python list using the `+` operator.
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The problematic code was:
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```python
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addons_paths = odoo.addons.__path__ + [root_path]
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```
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When `odoo.addons.__path__` is a `_NamespacePath` object, attempting to add it to a list `[root_path]` raises a `TypeError`.
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## Solution
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Convert the `_NamespacePath` to a list before concatenation:
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```python
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addons_paths = list(odoo.addons.__path__) + [root_path]
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```
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## File Modified
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- `odoo-bringout-oca-ocb-base/odoo/tools/misc.py` line 169
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## Related Code
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The `file_path()` function is used throughout Odoo to:
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- Verify file paths under known `addons_path` directories
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- Locate module resources (icons, static files, etc.)
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- Validate file access for security purposes
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This fix ensures the function can properly construct the list of addon paths to search.
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## References
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- Python namespace packages: [PEP 420](https://www.python.org/dev/peps/pep-0420/)
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- Working commit reference: 3f19943cec2680164696765266fc0cdb4e9220c5
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