data = pd.read_csv(label_file)

# Converts the format of each label in the dataframe from "LabelA|LabelB|LabelC"
# into ["LabelA", "LabelB", "LabelC"], concatenates the
# lists together and removes duplicate labels
unique_labels = np.unique(
    data['Finding Labels'].str.split("|").aggregate(np.concatenate)
).tolist()

print(f"Dataset contains the following labels:\n{unique_labels}")