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Progress indicator during pandas operations

python
progress-engineering
dataframe
pandas
Anton ShumikhinbyAnton Shumikhin·Nov 22, 2024
TLDR

Pandas operations are no longer a black box thanks to tqdm, an adaptable progress bar library. Begin with installing through pip install tqdm. Then:

from tqdm.auto import tqdm tqdm.pandas() df['processed'] = df['column'].progress_apply(your_function) # Behold the power of the progress bar!

By appending .progress_apply() to your habitual apply() function calls, you light up a live feed displaying the progress of data operations.

Getting started with tqdm and pandas

Progress bar for Groupby operations

Ensure smooth groupby operations with tqdm's progress tracking:

df.groupby('category').progress_apply(your_group_function) # Where's your group now?

Data transformation with progress indication

Make the most out of data transformation while keeping track of progress:

df.progress_transform(your_transform_function) # Watch me transform this!

Progress bar for custom operations

For complex operations, tqdm helps you keep track step-by-step:

with tqdm(total=df.shape[0]) as pbar: for index, row in df.iterrows(): # Your intricate operation here. Game on! pbar.update(1) # +1 to progress bar level. Level Up!

Advanced progress tracking with tqdm

Speedup with Multi-core processing

Boost performance by leveraging multi-core processing with progress updates:

from pandarallel import pandarallel from tqdm.auto import tqdm pandarallel.initialize(progress_bar=True) tqdm.pandas() def parallel_function(row): return your_computation(row) # Parallel universe magic. df.parallel_apply(parallel_function, axis=1) # Now you are thinking with portals.

Interactive progress bars in Jupyter Notebook

Enrich your Jupyter storytelling with interactive progress bars:

from tqdm.notebook import tqdm as tqdm_notebook tqdm_notebook.pandas() df['result'] = df['data'].progress_apply(your_function) # Ashton, record this magic!

Real-time progress tracking with logging

Monitor real-time data alterations in your logs, delivering up-to-the-minute progress insight.

import logging from tqdm.auto import tqdm tqdm.pandas(logger=logging.getLogger(__name__)) # This function logs the continuous progress. Progress, recorded. def logging_decorator(func): def wrapper(*args, **kwargs): result = func(*args, **kwargs) logging.info(f"Processed: {tqdm.pandas().n}/{tqdm.pandas().total}") # How about some live stats? return result return wrapper @logging_decorator def your_process_function(): # Function magic here. pass df['processed'] = df['data'].progress_apply(your_process_function) # Just another day logging progress.

Installing tqdm

For optimal compatibility, opt for the command:

pip install "tqdm>=4.9.0"

For tqdm versions <=4.8, replace tqdm.pandas() with tqdm_pandas(tqdm()).

Version compatibility

Stay ahead of the game by keeping tabs on version changes from both pandas and tqdm updates.

import pandas as pd import tqdm print(pd.__version__) print(tqdm.__version__)

Overcoming potential obstacles in pandas operations

Juggling large datasets

Tackling enormous datasets might render progress_apply sluggish. In such cases, try to:

  • Break the dataset into smaller chunks.
  • Employ Dask for distributed computations with progress reports.
  • Optimize the functions applied to the dataframe.

Keep GUIs happy with tqdm

In graphically demanding environments like SageMaker, tqdm.gui has your back covered.

Import shortcuts

For automatic import handling between .py and .ipynb files, trust tqdm.auto.