1def function_that_says_ni(*args, **kwargs):
 2    # Define constants
 3    SHRUB_DEFINITIONS = ("храст", "shrub", "bush")
 4    MAX_COST = 42
 5    # Init variables
 6    cost = 0
 7    niceness_unique_vals = set()
 8    # Get list of tuples of all input arguments combined
 9    arg_list = list(map(lambda x: ('', x), args)) + list(kwargs.items())
10    # Collect cost and unique name characters
11    for name, val in arg_list:
12        if type(val) is not dict:
13            continue
14        if val.get('name', '').lower() in SHRUB_DEFINITIONS:
15            cost += val.get('cost', 0)
16            niceness_unique_vals.update(*name)
17    # Determine cost and niceness and return the result
18    if int(cost) and cost <= MAX_COST:
19        if len(niceness_unique_vals) % int(cost) == 0:
20            return f"{cost:.2f}лв"
21    return "Ni!"