from _collections import OrderedDict
# сортировка по ключу
a = {'cat': 5, 'dog': 2, 'mouse': 4}
new_a = OrderedDict(sorted(a.items(), key=lambda x: x[0]))
print(new_a)
# OrderedDict([('cat', 5), ('dog', 2), ('mouse', 4)])
# сортировка по значению
b = {'cat': 5, 'dog': 2, 'mouse': 4}
new_b = OrderedDict(sorted(b.items(), key=lambda x: x[1]))
print(new_b)
# OrderedDict([('dog', 2), ('mouse', 4), ('cat', 5)])
# изменение порядка в отсортированном словаре
new_b.move_to_end('mouse')
print(new_b)
# OrderedDict([('dog', 2), ('cat', 5), ('mouse', 4)])
new_b.move_to_end('mouse', last=False)
print(new_b)
# OrderedDict([('mouse', 4), ('dog', 2), ('cat', 5)])
new_b.popitem()
print(new_b)
# OrderedDict([('mouse', 4), ('dog', 2)])
new_b.popitem(last=False)
print(new_b)
# OrderedDict([('dog', 2)])
