Typing Stubs for TQDM

4.67.3.20260408 · active · verified Thu Apr 09

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.

Warnings

gotcha 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.
Fix: Ensure both `tqdm` and `types-tqdm` are installed in your development environment (`pip install tqdm types-tqdm`).
gotcha 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.
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.
gotcha 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.
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.
gotcha 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.
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.

Install

pip install types-tqdm Install `types-tqdm`

Imports

tqdm
```
from tqdm import tqdm
```
`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.

Quickstart

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.

from tqdm import tqdm
import time

def process_items(items):
    for item in tqdm(items, desc='Processing'):
        time.sleep(0.01) # Simulate work
        # Add type-sensitive operations here
        # For example, if item is expected to be a string:
        _ = item.upper()

if __name__ == '__main__':
    my_list = list(range(100))
    process_items(my_list)

    # To check types, run a type checker like MyPy:
    # pip install mypy
    # mypy your_script_name.py
    # The 'types-tqdm' package provides the necessary type definitions for 'tqdm'.

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