Наследование классов

dict_main = {}
 
for i in range(int(input())):
    string = input().split(':')
    if len(string) == 1:
        dict_main[string[0].strip()] = set()
    else:
        dict_main[string[0].strip()] = {x.strip() for x in string[1].split()}
 
def search(parent, child):
    if parent == child:
        return 1
    elif parent in dict_main[child]:
        return 1
    else:
        for p in dict_main[child]:
            if search(p, child):
                return 1
 
questions = []
for i in range(int(input())):
    questions.append(input().split())
 
for question in questions:
    if search(question[0], question[1]):
        print('Yes')
    else:
        print('No')

4
A
B : A
C : A
D : B C
4
B A
A B
A D
D B
No
Yes
Yes
Yes

#!/usr/bin/env python3
# coding: utf-8
 
def isP(pr, ch):
    return ch == pr or any(map(lambda pl: isP(pr, pl), p[ch]))
p = {}
for j in range(2):
    for c in [input().split() for i in range(int(input()))]:
        if j: print(['No', 'Yes'][isP(*c)])
        else: p[c[0]] = c[2:]

any([False])  # False
any([False, True])  # True

print(list(map(lambda x: x+1, [1,2,3])))
>>> [2, 3, 4]

print('Yes' if isP(*c) else 'No')