I think that we will learn about the count() function later in the course.
However, another solution to your question.
You can create another variable that can display the sum of times the negative (or positive) number appears. It also needs an if/elif function to work. If the number is positive, the variable that you have created will add 1 to itself.
positiveCount = 0
if ... :
positiveCount = positiveCount + 1