"FizzBuzz"-style program that checks for divisibility by multiple numbers prints numbers multiple times when it should print words

Question

In a range of numbers from 1-100
This code should print:

Fizz if the number is divisible by 3
Buzz if the number is divisible by 5
Bizz if the number is divisible by 7
FizzBuzz if the number is divisible by 3 and 5
Similarly, all cases of Fizz, Buzz and Bizz combined depending on divisibility
The number itself if none of the above apply

n = 0
toTest = [
    3,
    5,
    7
]
outputCanBe = [
    "Fizz",
    "Buzz",
    "Bizz"
]
outputIndex = 0
iteration = (len(toTest)) 
while n <= 100:
    n += 1
    output = ""
    for num in range(iteration):
        if n%toTest[num] == 0:
            outputIndex = num
            output += outputCanBe[outputIndex]
        else:
            output += str(n)  
        print(output)
        output = ""

In the for num in range(iteration), the code loops through the checker multiple times to perform all divisibility tests. Due to a logical error that I can’t catch, my code repeatedly prints the number, as shown below

The expected output is:

2
Fizz
4

and so on…

Asked By: PythonProgrammer

||

Source

Answer 1

Add the "Fizz" "Buzz" "Bizz" if the division is possible, at the end if nothing has been added, it means that you have to print the number itself.

n = 0
toTest = [
    3,
    5,
    7
]
outputCanBe = [
    "Fizz",
    "Buzz",
    "Bizz"
]
outputIndex = 0
iteration = (len(toTest)) 
while n <= 25:
    n += 1
    output = ""
    for num in range(iteration):
        if n%toTest[num] == 0:
            outputIndex = num
            output += outputCanBe[outputIndex]
    if not output:
        print(n)
    else:
        print(output)

EDIT :

Here’s a cleaner and shorter version :

words = {3: "Fizz", 5: "Buzz", 7: "Bizz"}
size = 100
for n in range(size):
    output = ""
    for (numb, word) in words.items():
        if n % numb == 0:
            output += word
    print(n) if not output else print(output)

I used a dictionnary to connect a numb (example : 3) and its word (example : "Fizz").

Doing a for loop is just for shorter code.

The .items() method is meant to unpack the (key,value) of a dictionnary.

Python consider that if a str is empty its bool value is False. If it’s not empty, no matter what it contains it’s True. That’s what the if not ouput is for, to check if output is empty (divided by none of these numbers) or not.

Answered By: ArrowRise

"FizzBuzz"-style program that checks for divisibility by multiple numbers prints numbers multiple times when it should print words

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