{"id":1765,"library":"types-tqdm","title":"Typing Stubs for TQDM","description":"This package provides machine-readable type hints (stubs) for the popular `tqdm` progress bar library. It enables static type checkers like MyPy, Pyright, or Pylance to validate `tqdm` usage in Python code, catching potential type errors before runtime. As part of the `typeshed` project, `types-tqdm` versions are frequently released, often daily, to track changes and updates in the upstream `tqdm` library.","status":"active","version":"4.67.3.20260408","language":"en","source_language":"en","source_url":"https://github.com/python/typeshed","tags":["typing","stubs","type-hints","tqdm","mypy","pyright"],"install":[{"cmd":"pip install types-tqdm","lang":"bash","label":"Install `types-tqdm`"}],"dependencies":[{"reason":"This stub package provides type hints for the `tqdm` library. While not a runtime dependency, `types-tqdm` is only useful if `tqdm` is also installed in your environment for actual execution.","package":"tqdm","optional":true}],"imports":[{"note":"`types-tqdm` provides type hints for the `tqdm` library. You do not import directly from `types_tqdm`; instead, you import from `tqdm`, and type checkers automatically discover and use the installed stubs.","symbol":"tqdm","correct":"from tqdm import tqdm"}],"quickstart":{"code":"from tqdm import tqdm\nimport time\n\ndef process_items(items):\n    for item in tqdm(items, desc='Processing'):\n        time.sleep(0.01) # Simulate work\n        # Add type-sensitive operations here\n        # For example, if item is expected to be a string:\n        _ = item.upper()\n\nif __name__ == '__main__':\n    my_list = list(range(100))\n    process_items(my_list)\n\n    # To check types, run a type checker like MyPy:\n    # pip install mypy\n    # mypy your_script_name.py\n    # The 'types-tqdm' package provides the necessary type definitions for 'tqdm'.","lang":"python","description":"This quickstart demonstrates basic `tqdm` usage. Installing `types-tqdm` allows static type checkers (like MyPy, Pyright, or Pylance) to validate the type correctness of your interactions with `tqdm`'s functions and methods, for example, ensuring you pass an iterable to `tqdm` or correctly use its return values. The stubs themselves have no runtime effect; they are purely for static analysis."},"warnings":[{"fix":"Ensure both `tqdm` and `types-tqdm` are installed in your development environment (`pip install tqdm types-tqdm`).","message":"Stub packages like `types-tqdm` are for static type checking only. They provide no runtime functionality. You still need to install the actual `tqdm` library (`pip install tqdm`) for your code to execute successfully.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Keep your `tqdm` and `types-tqdm` packages reasonably up-to-date. If you encounter unexpected type errors, try upgrading both packages to their latest versions, or pin `tqdm` to a version compatible with the `types-tqdm` stubs.","message":"Type checking errors can occur if there's a significant version mismatch between your installed `tqdm` library and the `types-tqdm` stub package. `typeshed` stubs generally track the latest stable versions of upstream libraries.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Add `pip install types-tqdm` to your CI/CD setup script before running the type checking command. Consider adding it to a `requirements-dev.txt` or similar file.","message":"If you are using a type checker (e.g., MyPy) in a CI/CD pipeline, remember that `types-tqdm` must be installed in the environment where the type checker runs. It might not be necessary in your final production runtime environment, depending on your deployment strategy.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Use type checker directives (e.g., `# type: ignore` for MyPy) to suppress specific false-positive errors, but do so judiciously and with comments explaining why.","message":"Sometimes, type checkers might flag valid code due to limitations of the stubs or specific usage patterns. For example, dynamically adding attributes or using highly generic types with `tqdm` might trigger warnings.","severity":"gotcha","affected_versions":"All versions"}],"env_vars":null,"last_verified":"2026-04-09T00:00:00.000Z","next_check":"2026-07-08T00:00:00.000Z"}