My bad, I totally missed that part. In this case, I will not be able to give any comments since I'm not an audiophile.
@niranga1989 This subreddit will be helpful https://www.reddit.com/r/audiophile
One line answers
Answer :
print(a.index(search_item)) # if we are able to use language specific methods
[print(i) for i in range(len(a)) if a[i] == search_item ]
# one liner if we are not able to use language specific methods
Answer :
[print ("*"*5) for i in range(5)]
# one liner code
#...