How to Install typing-extensions in Python
Backported and Experimental Type Hints for Python 3.9+
pip install typing-extensions
What is typing-extensions?
Backported and Experimental Type Hints for Python 3.9+
- Enable use of new type system features on older Python versions. For example, is new in Python 3.10, but allows users on previous Python versions to use it too. - Enable experimentation with new type system PEPs before they are accepted and added to the module.
is treated specially by static type checkers such as mypy and pyright. Objects defined in are treated the same way as equivalent forms in .
uses Semantic Versioning. The major version will be incremented only for backwards-incompatible changes. Therefore, it's safe to depend on like this: , where is the first version that includes all features you need. This is equivalent to . Do not depend on unless you really know what you're doing; that defeats the purpose of semantic versioning.
Quick Start
Minimal example to get started with typing-extensions:
import typing_extensions
print(typing_extensions.__version__)Installation
pip (standard)
pip install typing-extensionsVirtual environment (recommended)
python -m venv venv
source venv/bin/activate # Windows: venv\Scripts\activate
pip install typing-extensionspip3
pip3 install typing-extensionsconda
conda install -c conda-forge typing-extensionsPoetry
poetry add typing-extensionsVerify the Installation
After installing, confirm the package is available:
python -c "import typing_extensions; print(typing_extensions.__version__)"If this prints a version number, installation succeeded. If you see a ModuleNotFoundError, see the errors section below.
Installation Errors
Common errors when installing typing-extensions with pip.
ModuleNotFoundError: No module named 'typing_extensions'
Cause: The package is not installed in the current Python environment.
Fix: Run pip install typing-extensions. If using a virtual environment, ensure it is activated first.
ModuleNotFoundError: No module named 'typing_extensions' (installed but still failing)
Cause: pip installed the package into a different Python than the one running your script.
Fix: Use python -m pip install typing-extensions to install into the interpreter you are running.
ImportError: cannot import name 'X' from 'typing_extensions'
Cause: The function or class does not exist in the installed version.
Fix: Check the version with pip show typing-extensions and upgrade with pip install --upgrade typing-extensions.
pip: command not found
Cause: pip is not in PATH or Python was not added to PATH during installation.
Fix: Try python -m pip install typing-extensions. On macOS/Linux try pip3.
PermissionError: [Errno 13] Permission denied
Cause: No write access to the system Python package directory.
Fix: Use a virtual environment, or add --user: pip install --user typing-extensions
SSL: CERTIFICATE_VERIFY_FAILED
Cause: pip cannot verify PyPI's SSL certificate — common behind corporate proxies.
Fix: Try: pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org typing-extensions
Recent Releases
| Version | Released |
|---|---|
4.15.0 latest |
2025-08-25 |
4.15.0rc1 |
2025-08-18 |
4.14.1 |
2025-07-04 |
4.14.0 |
2025-06-02 |
4.14.0rc1 |
2025-05-24 |
Manage typing-extensions
Upgrade to latest version
pip install --upgrade typing-extensionsInstall a specific version
pip install typing-extensions==4.15.0Uninstall
pip uninstall typing-extensionsCheck what is installed
pip show typing-extensions