как же я ненавижу питон..

def fill_accuracy(data):
    print(f"Data type: {type(data)}", end="\n\n")
    error_data = fill_error_list(data)
    mean_row = error_data["Mean"].value_counts()
    hmean_row = error_data["HMean"].value_counts()
    median_row = error_data["Median"].value_counts()
    mode_row = error_data["Mode"].value_counts()

    error_level_list = [0]
    accuracy_mean_list = [mean_row[0].item()]
    accurracy_hmean_list = [hmean_row[0].item()]
    accuracy_mode_list = [mode_row[0].item()]
    accuracy_median_list = [median_row[0].item()]
    for i in range(1, data.__len__()):
        error_level_list.append(i)
        accuracy_mean_list.append(mean_row[i].item() + accuracy_mean_list[i-1])
        accuracy_mode_list.append(mean_row[i].item() + accuracy_mode_list[i-1])
        accuracy_median_list.append(mean_row[i].item() + accuracy_median_list[i-1])
        accurracy_hmean_list.append(mean_row[i].item() + accurracy_hmean_list[i-1])
    accuracy_dict = {
        "ErrorLevel": error_level_list,
        "Mean": accuracy_mean_list,
        "HMean": accurracy_hmean_list,
        "Mode": accuracy_mode_list,
        "Median": accuracy_median_list
    }
    return pd.DataFrame(data=accuracy_dict)