class Storage:
    compose = []

stor = Storage()

class ValidationError:
    pass


def add(a,b):
    if not "," in b:
        raise ValidationError
    dct = {a: b}
    stor.compose.append(dct)

def search(a):
    temp = {}
    buf = "a"
    print(a)
    for i in stor.compose:
        for j in i.keys():
            if j == a:
                buf = j
                temp = i
    print(temp)
    numb = temp[buf]
    count = 0
    numb = numb.split(",")
    count += int(numb[0]) * 60 + int(numb[1])
    sec = f"0.{numb[2]}"
    count += float(sec)
    temp[buf] = count
    return temp

add("Лунная соната", "5,30,55")
add("В пещере горного короля", "7,20,31")

print(stor.compose)

print(search("В пещере горного короля"))