day 8 byte21 added

Author: vladlind

days/07-09-data-structures/code/nested_data_structure.py

@@ -0,0 +1,35 @@
+cars = {
+    'Ford': ['Falcon', 'Focus', 'Festiva', 'Fairlane'],
+    'Holden': ['Commodore', 'Captiva', 'Barina', 'Trailblazer'],
+    'Nissan': ['Maxima', 'Pulsar', '350Z', 'Navara'],
+    'Honda': ['Civic', 'Accord', 'Odyssey', 'Jazz'],
+    'Jeep': ['Grand Cherokee', 'Cherokee', 'Trailhawk', 'Trackhawk']
+}
+
+
+def get_all_jeeps(cars=cars):
+    """return a comma  + space (', ') separated string of jeep models (original order)"""
+    return ", ".join(jeep for jeep in cars['Jeep'])
+
+
+def get_first_model_each_manufacturer(cars=cars):
+    """return a list of matching models (original ordering)"""
+    return [models[0] for models in cars.values()]
+
+
+def get_all_matching_models(cars=cars, grep='trail'):
+    """return a list of all models containing the case insensitive
+       'grep' string which defaults to 'trail' for this exercise,
+       sort the resulting sequence alphabetically"""
+    list_matching_models = []
+    for models in cars.values():
+        for model in models:
+            if grep.lower() in model.lower():
+                list_matching_models.append(model)
+    return sorted(list_matching_models)
+
+
+def sort_car_models(cars=cars):
+    """sort the car models (values) and return the resulting cars dict"""
+    return {car: sorted(models) for car, models in cars.items()}
+