pl-compare 0.1.6

A tool to find the differences between two tables.

polars_compare: Compare and find the differences between two Polars DataFrames.

• Get statistical summaries and/or examples and/or a boolean to indicate:
  • Schema differences
  • Row differences
  • Value differences
• View differences as a text report
• Get differences as a Polars LazyFram or DataFrame.
• Use LazyFrames for larger than memory comparisons
• Specify the equality calculation that is used to dermine value differences

Installation

pip install pl_compare

Examples

To DO:

• Linting (Ruff)
• Make into python package
• Add makefile for easy linting and tests
• Statistics should indicate which statistics are referencing columns
• Add all statistics frame to tests
• Add schema differences to schema summary
• Make row examples alternate between base only and compare only so that it is more readable.
• Add limit value to the examples.
• Updated value differences summary so that Statistic is something that makes sense.
• Publish package to pypi
• Add difference criterion.
• Add license
• Make package easy to use (i.e. so you only have to import pl_compare and then you can us pl_compare)
• [] Write up docstrings
• [] Write up readme (with code examples)
• [] Raise error and print examples if duplicates are present.
• [] Add a count of the number of rows that have any differences to the value differences summary.
• [] Add total number of value differences to the value differences summary.
• [] Add parameter to hide column differences with 0 differences.
• [] Update report so that non differences are (optionally) not displayed.
• [] Add table name labels that can replace 'base' and 'compare'.
• [] Change id_columns to be named 'join_on' and add a test that checks that abritrary join conditions work.
• [] Update code to use a config dataclass that can be passed between the class and functions.
• [] Test for large amounts of data
• [] Benchmark for different sizes of data.
• [] strict MyPy type checking
• [] Github actions for testing
• [] Github actions for linting
• [] Github actions for publishing