import numpy as np


class Atom:
    """
    Class for individual atoms
    """

    def __init__(
        self, label: str, r: np.ndarray
    ) -> None:  # currently assume fractional coordinates
        """
        Initialise an Atom instance

        Args:
            label (Str): a label for this atom
            r (numpy.array): the atom coordinates

        Returns:
            None
        """
        self.label = label
        self.r = r
