def validate_rows_length(data, length, message=None, exception=MatrixError):
    """Validate that all rows have the same length."""
    if message is None:
        message = 'All rows must have the same length (same number of columns)'
    for row in data:
        if len(row) != length:
            raise exception(message)
def validate_rows_length ( data , length , message = None , exception = MatrixError ) : if message is None : message = 'All rows must have the same length (same number of columns)' for row in data : if len ( row ) != length : raise exception ( message )
Validate that all rows have the same length.