what i have done wrong here

Hi there, Debasis! This challenge is asking you to define a function that has one parameter named count. This part you did correctly, so kudos! But then it's asking you to print out "Hi" times the number that's equal to count. You have an if statement which actually isn't a conditional as it contains a single equals sign. That's not a comparison, it's an assignment. But in this case, neither an assignment nor a comparison are necessary.

You can take any string and multiply it by an integer to print it that number of times. So for example, if I wanted to print out "Treehouse" three times, I could do

print("Treehouse" * 3)

This would print out "TreehouseTreehouseTreehouse". However, they want an extra space in your output, and you don't know how many times you should print it because Treehouse is going to send in that information. Take a look:

def printer(count):
    print("Hi " * count)

You can think of the the parameter as being a local variable declaration. It's going to accept a piece of information coming into the method and then set count equal to that. Whatever number Treehouse sends into our printer function will now be stored in count. So if Treehouse send in 5, this will now print out "Hi Hi Hi Hi Hi". Note the space that I added after the "Hi" so that it won't appear all squished together.

Hope this helps!

count is not equal to 10. You have to make count equal to 10 for your print statement to work :)

oh! thank you.:)