I need to write a python function that takes a list as the input and calculates the number of numbers divisible by some other number, n. This is the code I have so far:
Could someone advice me on what approach to take, please?
I tried a for loop that finds the divisible numbers and adds them to a counter, but that is not working.
You’re returning the length of an integer, count, when you probably want to return the count itself:
def count_divisible(lst, n): count = 0 for i in lst: if i % n == 0: count += 1 return count
You can shorten your function and make it safer by checking each item is actually an int or a float:
def count_divisible_short_and_safe(lst: list, n: int) -> int: return len([x for x in lst if isinstance(x, (int, float)) and x % n == 0]) assert count_divisible_short_and_safe([2,3,4,5, "foo"], 2) == 2