DataFrameComparison.num_rows_left

DataFrameComparison.num_rows_left() → int

Number of rows in the left data frame.

Examples

>>> import polars as pl
>>> from diffly import compare_frames
>>> left = pl.DataFrame({"id": [1, 2, 3], "value": [10.0, 20.0, 30.0]})
>>> right = pl.DataFrame({"id": [1, 2], "value": [10.0, 25.0]})
>>> comparison = compare_frames(left, right, primary_key="id")
>>> comparison.num_rows_left()
3