Merge pull request 'feature/load_compressed_city' (#46) from feature/load_compressed_city into main

Reviewed-on: https://nextgenerations-cities.encs.concordia.ca/gitea/CERC/hub/pulls/46

hub/city_model_structure/city.py

@@ -14,6 +14,7 @@ import math
 import pickle
 import sys
 import pathlib
+import os
 from pathlib import Path
 from typing import List, Union
 
@@ -299,6 +300,20 @@ class City:
     with open(city_filename, 'rb') as file:
       return pickle.load(file)
 
+  @staticmethod
+  def load_compressed(compressed_city_filename, destination_filename) -> City:
+    """
+    Load a city from compressed_city_filename
+    :param compressed_city_filename: Compressed pickle as source
+    :param destination_filename: Pickle file as destination
+    :return: City
+    """
+    with open(str(compressed_city_filename), 'rb') as source, open(str(destination_filename), 'wb') as destination:
+      destination.write(bz2.decompress(source.read()))
+      loaded_city = City.load(destination_filename)
+    os.unlink(destination_filename)
+    return loaded_city
+
   def save(self, city_filename):
     """
     Save a city into the given filename