def main():
    my_dict = {'data1': 100, 'data2': -54, 'data3': 247}

    print('==Exercise 4==')

    dvs = [my_dict[i] for i in my_dict.keys()]

    print(f"Dict: {my_dict}")
    print(f"Sum: {sum(dvs)}")
    mv = 1
    for i in dvs:mv*=i
    print(f"Mul: {mv}")
    ma,mi = max(dvs),min(dvs)

    def find_idx(d,v):
        idxs = []
        for ii in d.keys():
            if d[ii]==v:idxs.append(ii)
        return idxs

    mai,mii = find_idx(my_dict,ma),find_idx(my_dict,mi)
    print(f"Max: {ma}, index:{mai}")
    print(f"Min: {mi}, index:{mii}")

    my_dict.pop('data2')

    print(f"Popped 'data2': {my_dict}")

    print('==End Of Ex4==')
    return 0

if __name__ == '__main__':
    main()