numAnalysisEngine_2.py

nums = [12, -5, 0, 7, -3, 18, 21, 4]

def classify_num(nums):
    pos = neg = zero = 0
    for i in range(len(nums)):
        if (nums[i]>0):
            pos += 1

            print(f"the number: {nums[i]} is positive having index {i}")
        elif (nums[i]==0):
            zero += 1
            print(f"the number: {nums[i]} is zero having index {i}")
        else:
            neg += 1
            print(f"the number: {nums[i]} is negative having index {i}")

    return pos, neg, zero

def find_even_positive(nums):
    for i in range(len(nums)):
        if (nums[i]>0 and nums[i]%2==0):
            return nums[i]   
    return None
        
def div_by_3_not_by_2(nums):
    result = []
    for i in range(len(nums)):
        if (nums[i]%3 == 0 and nums[i]%2 != 0):
            result.append(nums[i])
    return result
        
print(f"---- Number analysis engine ----")
print(f"Printing analysis of each no.: ")
pos,neg,zero = classify_num(nums)
print(f"The total positive no. is : {pos} and total negative no. is : {neg} and total count of zeroes {zero}")
first_even = find_even_positive(nums)
print(f"The first even positive no. is : {first_even}")
special_num = div_by_3_not_by_2(nums)
print(f"Numbers divisible by 3 but not by 2: {special_num}")