task_3

def start_spring(**kwargs):
    result = []
    fl_by_type = {}
    for flower_, type_ in kwargs.items():
        if type_ not in fl_by_type:
            fl_by_type[type_] = []
        fl_by_type[type_].append(flower_)
    sorted_types = sorted(fl_by_type.items(), key=lambda kvp: (-len(kvp[1]), kvp[0]))
    for types, flowers in sorted_types:
        result.append(f'{types}:\n')

        result.append('\n'.join('-' + fl for fl in sorted(flowers)) + '\n')
    return ''.join(result).strip()


example_objects = {"Water Lilly": "flower",
                   "Swifts": "bird",
                   "Callery Pear": "tree",
                   "Swallows": "bird",
                   "Dahlia": "flower",
                   "Tulip": "flower",}
print(start_spring(**example_objects))
example_objects = {"Swallow": "bird",
                   "Thrushes": "bird",
                   "Woodpeckers": "bird",
                   "Swallows": "bird",
                   "Warblers": "bird",
                   "Shrikes": "bird",}
print(start_spring(**example_objects))
example_objects = {"Magnolia": "tree",
                   "Swallow": "bird",
                   "Thrushes": "bird",
                   "Pear": "tree",
                   "Cherries": "tree",
                   "Shrikes": "bird",
                   "Butterfly": "insect"}
print(start_spring(**example_objects))