Trying to turn fizzbuzz into a function in python 3

Question

I have only just started to learn python as my first language and whilst i worked out the code for fizzbuzz, i cannot for the life of me get it to do the items below. I also want it to print horizontally instead of vertically. Any help would be great (heads spinning). Create a function which does this. For example

fizzbuzz(20) 

would print 1,2,fizz,4,buzz,fizz,7,8,fizz,buzz,11,fizz,13,14,fizzbuzz,16,17,fizz,19,buzz

def fizzbuzz(n):

    for x in range (101):
        if x%3==0 and x%5==0:
            print("fizz buzz")
        elif x%3==0:
            print('fizz')
        elif x%5==0:
            print('buzz')
        else:
            print (x)    

def main():
  print(fizzbuzz(20))

Answer 1

Shorter yet:

for n in range(100):
    print("Fizz"*(not n % 3) + "Buzz"*(not n % 5) or n)

Yes, but why?

To understand this, let's look at the parts separately.

"Fizz"*(not n % 3)

In Python, we can "multiply" strings, so "a"*3 would result in "aaa". You can also multiply a string with a boolean: "a" * True is "a", whereas "a" * False is an empty string, "". That's what's happening to our "Fizz" here. When n % 3 == 0 (ie. n is 3, 6, 9, ...), then not n % 3 will be the same as not 0, which is True. Conversely, when n is 1, 2, 4, 5, 7, ... then n % 3 will be either 1 or 2, and not n % 3 will be false. In Other words, whenever n is divisible by 3, the term "Fizz"*(not n % 3) will multiply the string "Fizz" by True, and when it's not, it will multiply by False, resulting in an empty string.

The same logic applies to the next part, "Buzz"*(not n % 5). It'll give us an empty string when n is not divisible by 5, and the string "Buzz" when it is.

Now we're adding those two things together:

"Fizz"*(not n % 3) + "Buzz"*(not n % 5)

When n is neither divisible by 3 nor 5, this will be adding two empty strings together (ie. "" + ""), which will of course give us another empty string. In that case, the whole print statement reads print("" or n). Since an empty string is False-y, it will print our number n. If n is divisible by 3 (but not 5), this would be print("Fizz" or n), and since "Fizz" is Truthy, it will just print that and omit the number.

Bonus points

Or, if you really want to impress your interviewer,

for n in range(100):
    print("FizzBuzz"[n%-3&4:12&8-(n%-5&4)] or n)