tell the type of a number in python code example

Example 1: how to use a function to find the average in python

avreage_cost = cost
    avg = sum(avreage)/len(avreage) 
    print("The average amout you spent is ", round(avg,2))

Example 2: how to have a only number type in java

class scratch{
    public static Number haha(Number yo){
        return yo;
    }

    public static void main(String[] args) {
        System.out.println(haha( (int) 5 ));
        System.out.println(haha( (double) 5.0 ));
        System.out.println(haha( (long) 5 ));
        System.out.println(haha( (float) 5.0 ));
        //all of these classes extend the java.lang.Number class 

        System.out.println(haha("Hey"));
        //error because the java.lang.String class does not extend the java.lang.Number class
    }
}