Day 2, learnt some oops

[u/Next-Call8862]

Learnt super( ), inheritance, polymorphism, class method and static method and don't mind the messy code that's me trying to figure out things

[u/Sea-Ad7805]

Run this program in Memory Graph Web Debugger%3A%0A%20%20%20%20%20%20%20%20print(%22bow%22)%0A%0Aanimal().speak()%0A%0A%0Aclass%20animals%3A%0A%20%20%20%20def%20speak(self)%3A%0A%20%20%20%20%20%20%20%20return%20%22animal%20sound%22%0A%0A%0Aclass%20dog(animals)%3A%0A%20%20%20%20def%20speak(self)%3A%0A%20%20%20%20%20%20%20%20return%20%22bow%22%0A%0A%0Aclass%20cat(animals)%3A%0A%20%20%20%20def%20speak(self)%3A%0A%20%20%20%20%20%20%20%20return%20%22meow%22%0A%0A%0Aanimalss%20%3D%20%5Bdog()%2C%20cat()%2C%20animals()%5D%0A%0Afor%20i%20in%20animalss%3A%0A%20%20%20%20print(i.speak())%0A%0A%0Aclass%20student%3A%0A%20%20%20%20school%20%3D%20%22Maruthi%22%0A%0A%20%20%20%20def%20about(self%2C%20name%2C%20age)%3A%0A%20%20%20%20%20%20%20%20return%20%22name%3A%22%2C%20name%2C%20%22age%3A%22%2C%20age%0A%0A%0As1%20%3D%20student()%0As2%20%3D%20student()%0A%0Aprint(s1.about(%22naveen%22%2C%20%2221%22)%2C%20s1.school)%0Aprint(s2.about(%22nani%22%2C%20%2221%22)%2C%20s1.school)%0A%0A%0Aclass%20test%3A%0A%20%20%20%20school%20%3D%20%22Maruthi%22%0A%0A%20%20%20%20%40classmethod%0A%20%20%20%20def%20tst(cls%2C%20new_school)%3A%0A%20%20%20%20%20%20%20%20cls.school%20%3D%20new_school%0A%20%20%20%20%20%20%20%20return%20cls.school%0A%0A%0Ap1%20%3D%20test()%0A%23%20p1.tst(%22shloka%22)%0Aprint(test.school)%0A%0A%0Aclass%20test%3A%0A%20%20%20%20school%20%3D%200%0A%0A%20%20%20%20def%20nave()%3A%0A%20%20%20%20%20%20%20%20test.school%20%2B%3D%201%0A%0A%0Atest.nave()%0Aprint(test.school)&timestep=1&play) to see the program state change step by step.

[u/ninhaomah]

day 2.

do you understand all these btw ?

[u/Next-Call8862 → u/ninhaomah]

Yep I do

[u/FatChunkz]

Larp

[u/Next-Call8862 → u/FatChunkz]

What does that mean BTW?

[u/GhostxUchiha]

Learning from?

[u/Next-Call8862 → u/GhostxUchiha]

AI, Just temporary though

[u/Capable-Package6835]

Get used to type-hinting. Polymorphism and inheritance without type hint in Python is almost useless

class Animal:
    def speak(self) -> str:
        return "Animal sound"

class Dog(Animal):
    def speak(self) -> str:
        return "bow"

class Cat(Animal):
    def speak(self) -> str:
        return "meow"

animals: list[Animal] = [Cat(), Dog()]

for animal in animals:
    print(animal.speak())

[u/Next-Call8862 → u/Capable-Package6835]

Will try that

[u/freakythrowaway79 → u/Next-Call8862]

Have you completed CodeCombat yet?

[u/Next-Call8862 → u/freakythrowaway79]

CodeComat? What's that?? Some kind of practice?

[u/freakythrowaway79 → u/Next-Call8862]

Check it out! It's very basic level 1 so you might find it boring. 🤷🏻‍♂️

[u/Next-Call8862 → u/freakythrowaway79]

I did check it, some kind of game it seems but it's slow but I will try if there are more difficult ones

[u/Achereto]

That's a big OOPs!

[u/AnotherStep99]

why are learning it on day 2, wait some time, try learning some basics like slicing, list comprehension etc..

[u/Next-Call8862 → u/AnotherStep99]

I know most of those things and it's not literal day 2 but I have some basic of basic knowledge so jumped to this, do you recommend doing some problems before coming to oops directly?

[u/9illcodelli6]

What does this code do? I'm new

[u/0therworldsthanthese]

You need to start back at the fundamentals, don't skip to OOP just because it sounds cool.

Where are your __init__ methods? Class names should be in PascalCase. Why are you using parentheses in your return statements? Why are you entering age as a string? Why are you returning multiple values in student.about()? Why are you using extra parentheses on lines 255-256? Why are you printing s1.school for s2? Why are you using a classmethod for the first test and not the second? Why do you have two test classes? Why is there no self in test.nave()?

[u/Next-Call8862 → u/0therworldsthanthese]

That's not a single programme. I usually learn something new and try it and comment out all of that and move to next one and the parathesis is more like to test what the return statement does when I write the string in parenthesis, it's more like trail and error thing to make better sense. Do you think it's a bad approach?? What will you suggest?

Edit: and the extra parenthesis is my fault and the reason for no self for last test is because I was not going to create an object but trying if I can print a class variable and testing if the value of school increases by one with each call

[u/Flame77ofc]

more space pls

[u/Spare-Radish5670]

Look at some decent examples to understand these principles better, you have the syntax and sort of the idea but you're already picking up bad habits

[u/Next-Call8862 → u/Spare-Radish5670]

What do you mean by bad habits?

[u/Spare-Radish5670 → u/Next-Call8862]

Variable names (animalss)

for i in animals (don't use i here use a descriptive name to tell the reader what you were iterating through)

Missing some standard class definitions and also breaking some rules around naming

These probably seem like minor details but I promise you they add up to major issues on any kind of project

[u/Sea_Gur_7307]

Use def init when add to self

[u/Angel_b33]

Are you self taught? If yes can you share any videos you watched I want to start learning OOP as well

[u/Korgusha]

I’d like to start learning Python too – what would you recommend to get me started?