1def function_that_says_ni(*args, **kwargs):
 2    total_price = 0
 3    valid_bushes = False
 4    for arg in args:
 5        if isinstance(arg, dict) and is_bush(arg):
 6            valid_bushes = True
 7            total_price += cost_of_bush(arg)
 8
 9    for kwarg_value in kwargs.values():
10        if isinstance(kwarg_value, dict) and is_bush(kwarg_value):
11            valid_bushes = True
12            total_price += cost_of_bush(kwarg_value)
13
14    output = generate_output(kwargs, total_price, valid_bushes)
15    return output
16
17def generate_output(kwargs, total_price, valid_bushes):
18    output_text = 'Ni!'
19    if valid_bushes == False:
20        return output_text
21    elif not one_that_looks_nice(kwargs, total_price) or is_too_expensive(total_price):
22        return output_text
23    else:
24        return f'{total_price:.2f}лв'
25
26def is_bush(arg):
27    key = 'name'
28    return key in arg.keys() and str(arg[key]).lower() in ('храст', 'shrub', 'bush')
29
30def cost_of_bush(arg):
31    value = 'cost'
32    if value in arg.keys() and isinstance(arg[value], (int, float)):
33        price = arg[value]
34        return price
35    return 0
36
37def one_that_looks_nice(kwargs, price):
38    whole_part_price = int(price)
39    if whole_part_price == 0:
40        return False
41    if len(kwargs) == 0:
42        return True
43    elif kwargs:
44        unique_chars = set()
45        for kwarg_key, kwarg_value in kwargs.items():
46            if isinstance(kwarg_value, dict) and is_bush(kwarg_value):
47                unique_chars.update(kwarg_key)
48        unique_chars_count = len(unique_chars)
49        looks_nice = unique_chars_count % whole_part_price == 0
50        return looks_nice
51    else:
52        return False
53
54def is_too_expensive(price):
55    return price > 42.00