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tqdm Cheat Sheet

20 Dec 2021

Table of Contents

tqdm is a fast, user-friendly and extensible progress bar for Python and shell programs. Here you’ll find a collection of useful commands for quick reference.

Installation

Install tqdm with:

# With pip
pip install tqdm

# With anaconda
conda install -c conda-forge tqdm

To install tqdm for JupyterLab, you need to have ipywidgets installed. You can install it with:

# With pip
pip install ipywidgets

# With anaconda
conda install -c conda-forge ipywidgets

Enable ipywidgets for jupyter with:

jupyter nbextension enable --py widgetsnbextension

Cheat Sheet

To import tqdm to work both for notebooks and shell programs type:

from tqdm.auto import tqdm

Iterate over a range with:

for i in tqdm(range(100)):
    # do something

Add description to the progress bar with:

for i in tqdm(range(100), desc="First loop"):
    # do something

Iterate over a Pandas table with:

for idx, row in tqdm(df.iterrows(), total=len(df)):
    # do something with that row

Add changing description to progress bar:

pbar = tqdm(range(100))
for i in pbar:
    pbar.set_description(f"Element {i:03d}")
    # do something

Show progress for nested loops:

for i in tqdm(range(10)):
    for j in tqdm(range(100), leave=False):
        # do something

The option leave=False discards nested bars upon completion.

Resources

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