tidypolars-extra 0.1.0

An extension to tidypolars4sci with additional functionalities for scientific data analysis.

tidypolars-extra

tidypolars-extra is an extension of tidypolars4sci, which provides Tidyverse-like functions for data manipulation and analysis in Python using Polars as the backend.

This project builds upon the original tidypolars4sci by adding extra functionalities and improvements while maintaining the same familiar API.

Features

• Tidyverse-style API for Polars DataFrames
• Scientific research utilities including LaTeX table generation
• Fast data manipulation powered by Polars
• Familiar R-like syntax for Python users

Installation

You can install tidypolars-extra with pip:

pip install tidypolars-extra

Basic usage

tidypolars-extra methods are designed to work like tidyverse functions:

import tidypolars_extra as tp

# create tibble data frame
df = tp.tibble(x = range(3),
               y = range(3, 6),
               z = ['a', 'a', 'b'])

(
    df
    .select('x', 'y', 'z')
    .filter(tp.col('x') < 4, tp.col('y') > 1)
    .arrange(tp.desc('z'), 'x')
    .mutate(double_x = tp.col('x') * 2,
            x_plus_y = tp.col('x') + tp.col('y')
            )
)
┌─────┬─────┬─────┬──────────┬──────────┐
│ x   ┆ y   ┆ z   ┆ double_x ┆ x_plus_y │
│ --- ┆ --- ┆ --- ┆ ---      ┆ ---      │
│ i64 ┆ i64 ┆ str ┆ i64      ┆ i64      │
╞═════╪═════╪═════╪══════════╪══════════╡
│ 2   ┆ 5   ┆ b   ┆ 4        ┆ 7        │
├╌╌╌╌╌┼╌╌╌╌╌┼╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ 0   ┆ 3   ┆ a   ┆ 0        ┆ 3        │
├╌╌╌╌╌┼╌╌╌╌╌┼╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ 1   ┆ 4   ┆ a   ┆ 2        ┆ 5        │
└─────┴─────┴─────┴──────────┴──────────┘

Converting to/from pandas data frames

If you need to use a package that requires pandas or polars data frames, you can convert from a tidypolars_extra tibble to either of those DataFrame formats.

# convert to pandas...
df = df.to_pandas()
# ... or convert to polars
df = df.to_polars()

To convert from a pandas or polars DataFrame to a tidypolars tibble:

# convert from pandas...
df = tp.from_pandas(df)
# or covert from polars
df = tp.from_polars(df)

Acknowledgments

This project is an extension of:

• tidypolars4sci by Diogo Ferrari
• tidypolars — the original starting point