{"id":437,"library":"importlib-resources","title":"importlib-resources","description":"A backport of Python's importlib.resources module, providing access to resources within packages. Current version: 6.5.2. Release cadence: Regular updates with recent releases in January 2025.","status":"active","version":"6.5.2","language":"python","source_language":"en","source_url":"https://github.com/python/importlib_resources","tags":["resource access","package resources","Python 3.9+"],"install":[{"cmd":"pip install importlib-resources","lang":"bash","label":"Install importlib-resources"}],"dependencies":[{"reason":"Provides backport of importlib for older Python versions","package":"importlib-metadata","optional":true}],"imports":[{"note":"Ensure correct import path to access package resources","symbol":"files","correct":"from importlib_resources import files"}],"quickstart":{"code":"import os\nfrom importlib_resources import files\n\n# Access a text file within the package\nresource = files('my_package').joinpath('data', 'example.txt').read_text()\nprint(resource)","lang":"python","description":"Access a text file within the package using importlib-resources"},"warnings":[{"fix":"Use standard installation methods or handle editable installs appropriately","message":"Editable installs may cause issues with importlib_resources.files","severity":"breaking","affected_versions":"6.4.0"},{"fix":"Use functions like read_text() or read_binary() to access resource contents directly","message":"Accessing resources as file paths may fail when package is bundled in a zip file","severity":"gotcha","affected_versions":"All"},{"fix":"Ensure the required package is properly installed and accessible in the Python environment (e.g., by running `pip install my_package`).","message":"ModuleNotFoundError indicates the package could not be found or imported. This typically means the package is not installed or not correctly available in the Python path.","severity":"breaking","affected_versions":"All"},{"fix":"Ensure the package (e.g., 'my_package' in this case) is correctly installed in the Python environment (e.g., via `pip install my_package` or `pip install .`), or that its location is added to `sys.path` (e.g., using `PYTHONPATH`).","message":"`importlib_resources` functions, such as `files()`, require the specified package to be discoverable and importable by Python. A `ModuleNotFoundError` indicates that Python cannot find the target package.","severity":"breaking","affected_versions":"All"}],"env_vars":null,"last_verified":"2026-05-12T13:48:35.958Z","next_check":"2026-06-26T00:00:00.000Z","problems":[{"fix":"For Python versions prior to 3.7, install the backport library using `pip install importlib-resources` and then import it as `import importlib_resources`. If on Python 3.7 or newer, ensure your Python environment is correctly set up.","cause":"This error occurs when trying to use `importlib.resources` on a Python version older than 3.7. The `importlib.resources` module became part of the standard library in Python 3.7, and for earlier versions, a separate backport library is required.","error":"ModuleNotFoundError: No module named 'importlib.resources'"},{"fix":"Upgrade your Python version to 3.9 or newer. If you must use an older Python, ensure you have the latest compatible `importlib-resources` backport installed (`pip install --upgrade importlib-resources`) and be aware that the `files()` API might not be available or behave differently in older backport versions, requiring you to use the older `importlib.resources.read_text()` or `importlib.resources.open_binary()` functions instead.","cause":"The `files()` function, and subsequently the `Traversable` API (including methods like `read_text` accessed via `files()`), was introduced in Python 3.9. This error indicates you are using an older Python version (e.g., 3.7 or 3.8) or an outdated version of the `importlib-resources` backport that does not yet include this functionality.","error":"AttributeError: module 'importlib.resources' has no attribute 'files'"},{"fix":"Ensure that the resource file is correctly included in your package data (e.g., via `include_package_data=True` and `package_data` in `setup.py` or `[tool.setuptools.package-data]` in `pyproject.toml`). For namespace packages, verify your packaging configuration. Sometimes ensuring that the package you are referencing is indeed a regular package (with an `__init__.py` in older Python versions) can resolve this. If running a script directly, try running it as a module (e.g., `python -m your_package.your_script`) to ensure correct package context.","cause":"This error typically arises when `importlib.resources` attempts to locate a resource within a namespace package (PEP 420-style package without an `__init__.py` file) that might not have a single, discernible file system location, or when the resource itself is not properly included in the package distribution. It can also occur if the package cannot resolve its `__spec__.origin` or if the resource is genuinely missing or misconfigured in `setup.py`/`pyproject.toml`.","error":"FileNotFoundError: Package has no location <module 'your_package' (namespace)>"},{"fix":"Explicitly specify the correct encoding when calling `read_text()` or `open_text()`. For example, if the file is saved with Latin-1 encoding, use `importlib.resources.read_text(package, 'resource.txt', encoding='latin-1')` or `importlib.resources.files(package).joinpath('resource.txt').read_text(encoding='latin-1')`.","cause":"This error occurs when `importlib.resources.read_text()` (or `open_text()`) tries to decode a resource file using an incorrect character encoding. By default, it often assumes UTF-8, but files saved with different encodings (common on Windows with system-dependent encodings like `cp1252`) will cause this error if not specified correctly.","error":"UnicodeDecodeError: 'charmap' codec can't decode byte ... in position ...: character maps to <undefined>"}],"ecosystem":"pypi","meta_description":null,"install_score":100,"install_tag":"verified","quickstart_score":0,"quickstart_tag":"stale","pypi_latest":null,"install_checks":{"last_tested":"2026-05-12","tag":"verified","tag_description":"installs cleanly on critical runtimes, fast import, recently tested","results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine (musl)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.04,"mem_mb":2.3,"disk_size":"18.1M"},{"runtime":"python:3.10-slim","python_version":"3.10","os_libc":"slim (glibc)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.03,"mem_mb":2.3,"disk_size":"19M"},{"runtime":"python:3.11-alpine","python_version":"3.11","os_libc":"alpine (musl)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.09,"mem_mb":2.7,"disk_size":"20.0M"},{"runtime":"python:3.11-slim","python_version":"3.11","os_libc":"slim (glibc)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.07,"mem_mb":2.7,"disk_size":"21M"},{"runtime":"python:3.12-alpine","python_version":"3.12","os_libc":"alpine (musl)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.07,"mem_mb":2.6,"disk_size":"11.9M"},{"runtime":"python:3.12-slim","python_version":"3.12","os_libc":"slim (glibc)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.07,"mem_mb":2.6,"disk_size":"12M"},{"runtime":"python:3.13-alpine","python_version":"3.13","os_libc":"alpine (musl)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.06,"mem_mb":2.5,"disk_size":"11.5M"},{"runtime":"python:3.13-slim","python_version":"3.13","os_libc":"slim (glibc)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.06,"mem_mb":2.4,"disk_size":"12M"},{"runtime":"python:3.9-alpine","python_version":"3.9","os_libc":"alpine (musl)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.05,"mem_mb":2.4,"disk_size":"17.8M"},{"runtime":"python:3.9-slim","python_version":"3.9","os_libc":"slim (glibc)","variant":"default","exit_code":0,"wheel_type":null,"failure_reason":null,"install_time_s":null,"import_time_s":0.03,"mem_mb":2.4,"disk_size":"18M"}]},"quickstart_checks":{"last_tested":"2026-04-23","tag":"stale","tag_description":"widespread failures or data too old to trust","results":[{"runtime":"python:3.10-alpine","exit_code":1},{"runtime":"python:3.10-slim","exit_code":1},{"runtime":"python:3.11-alpine","exit_code":1},{"runtime":"python:3.11-slim","exit_code":1},{"runtime":"python:3.12-alpine","exit_code":1},{"runtime":"python:3.12-slim","exit_code":1},{"runtime":"python:3.13-alpine","exit_code":1},{"runtime":"python:3.13-slim","exit_code":1},{"runtime":"python:3.9-alpine","exit_code":1},{"runtime":"python:3.9-slim","exit_code":1}]}}