Python - Guardar datos de un .txt

#!/usr/bin/env python3

# -*- coding: utf-8 -*-

import re

def load_data_from_file(file):

    data = {}

    with open(file, 'r') as f:

        current_header = None

        for line in f.readlines():

            line = line.strip().replace('\n', '')

            if line != '':

                if re.findall('^[\d+\s.]+$', line):

                    data[current_header].append([float(x) for x in line.split()])

                else:

                    current_header = line

                    data[current_header] = []

    return data

data = load_data_from_file('file.txt')

{

    'Datos 1': [

        [1.0, 2.0], [1.0, 3.0], [2.0, 3.0]

    ],

    'Datos 2': [

        [2.2, 1.0], [23.0, 9.0], [32.0, 2.0]

    ],

    'Elementos 1': [

        [3.0, 32.0], [4.1, 54. 6]

    ]

}

print(data['Datos 1'][0]) # [1.0, 2.0]

print(data['Datos 1'][0][0]) # 1.0