How to traverse a json file in python and find the key name using value

can anyone please help me to find the solution
I am having a JSON file like below

    {
   "Parent1": ["Child1", "Child2","Child5"],
   "Parent2": ["Child3", "Child4","Child5"]
    }

expectation: Python code to find the parent name using child name

User input: Child1
Expected output : Parent1

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OR

User input: Child5
Expected output : Parent1,Parent2

>Solution :

This is an apporach you can use

choice = input("Enter search string ")
ans = []
for i,j in data.items():
    if choice in j:
        ans.append(i)

ans will now contain the keys you need as a list