Find String in String with Python (sentence, word)

def find_your_word_from_sentence(sentence, word):
    n=0
    while n        
        check = sentence.find(word[n])
        if check ==-1:
            return "Your Word is not found in given sentence."
        n=n+1
    
    return word


print find_your_word_from_sentence('This is city of technolgy, piano and 
violine also found here', 'techvolatile')

Output:

techvolatile