require_stated

function of dascore.utils.tables

source

require_stated(
    frame: DataFrame ,
    needed ,
    path: Path ,
)-> ‘None’

Reject blank cells in required columns.

Ordering and grouping keys must be present: pandas sorts nulls last and drops rows with null grouping keys.

Parameters

Parameter	Description
frame	The table to check.
needed	The column names which must be stated by every row; a None is ignored.
path	The file the table was read from, for the error message.

Examples

import pandas as pd
from pathlib import Path
from dascore.utils.tables import require_stated
frame = pd.DataFrame({"sequence": [1, 2]})
require_stated(frame, ["sequence"], Path("t/x.csv")) is None

True