Related links for this tutorial could be found HERE

Use Data inside a List

Now you already got a Python function in the previous tutorial

def HeroEquipChoose(ori_atk, ori_edm):
    use_eq_a = (ori_atk + 200) * (1 + ori_edm + 0.1)
    use_eq_b = (ori_atk + 100) * (1 + ori_edm + 0.2)
    if use_eq_a > use_eq_b:
        print('choose a')
    elif use_eq_a < use_eq_b:
        print('choose b')
    else:
        print('two equipments are the same')

but you still have to type HeroEquipChoose(input1, input2) for 25 times to finish analyzing process.

Is there anyway that allows you to type HeroEquipChoose(input1, input2) just once and tell the result?

There is a data structure called List

You can find the academic concepts of List on wiki but today I just want to tell you how it works in this project in an interesting way.

Imagine you need to tell a truck to move n containers from the current city to city A. If you put the containers everywhere without a specific location, you need to point to the container to the bus driver and tell him:

“Hey David, would you please move this container to city A?”

“Hey David, would you please move that container to city A?”

…… for n times.

But it you put all the containers on a square then you just need to tell him:

“Hey David, would you please move those containers on the square to city A?”

In this project, a List plays the role of the square. You put things inside it, tell function to call the elements inside the list, and wait for result.

In python, a list could be defined as:

ls = [element1, element2, element3....]

elements could be different objects, it could be a single element like int, string, float or even data structures like list, tuple…..

In this example, if you have 3 heros

Hero1

ori_atk = 1000
ori_edn = 0.2

Hero2

ori_atk = 1200
ori_edn = 0.1

Hero3

ori_atk = 500
ori_edn = 0.5

You can defind the input list as

heroes = [[1000, 0.2], [1200, 0.1], [500, 0.5]]

You can also use Tuple as the element inside heroes like heroes = [(1000, 0.2), (1200, 0.1), (500, 0.5)] but this is a long story to talk although it ise much efficient than put lists inside heroes, and I will not teach you about this in the tutorial face to newbies.

heroes is a list of list, which means every element in heroes is a list.

heroes[0] == [1000, 0.2], the first element in this list represents the attack of hero1, and the second element reperesnts the extra damage multiplier. heroes[1] = [1200, 0.1] and heroes[2] = [500, 0.5] working on similar way, which represent the data of hero2 and hero3 (Notice the number inside computer start from 0, instead of 1 in real life)

There are two ways to go through list heroes

Method 1: Go through every element in heroes straightly

for hero in heroes:
    HeroEquipChoose(hero[0], hero[1])

Method 2: Gothrough elements in heroes by its index

for index in range(len(heroes)):
    # heroes[0] == [1000, 0.2], heroes[1] == [1200, 0.1]...
    HeroEquipChoose(heroes[index][0], heroes[index][1])

variable index could be replaced by anything you want, programmers always use i for convenience.

Running Result

First Python Project - Configure A Hero - Part C

Tutorial for newbies to programming

Use Data inside a List

CATALOG

FEATURED TAGS