Am studying the difference between those two languages and i was wondering why i can’t access the variables in javascript classes without initiating an instance but i can do that in python here is an example of what am talking about: PYTHON CLASS class Car: all =[] def __init__(self, name): self.name = name Car.all.append(self) def… Read More Classes in PYTHON vs JAVASCRIPT
I’m parsing a text file (hosts.txt) that has the following format: #line to ignore 127.0.0.1,localhost 192.168.0.1,my gateway 8.8.8.8,google DNS My goal is to read each line, store the 2 pieces of information in a class, and then store the class in a table. Later on, I will go through the table, will read each "ip"… Read More How to store/retrieve a class information to/from a table?
I’ve been trying to get the method to print out the specific attribute within class. Although I’ve already used _str_ for another thing, and for now it returns the location of my method, which is useless to me. class Account(): def __init__(self,name,value): self.name = name self.value = value def __str__(self): return f’Account owner: {self.name}\nAccount balance:… Read More Printing different values within class in Python
I have a class Player which puts created objects in a List: class Player: all = [] def __init__(self, name: str): self.name = name Player.all.append(self) def __repr__(self): return f"N: {self.name}" I wanted to print the list of the following objects using repr: player1 = Player("p1") player2 = Player("p2") player3 = Player("p3") print(Player.all) I got what… Read More Printing lists with __str__ and __repr__ in Python
I’m working on a 3D rendering application in Python and encountered an issue when trying to create an instance of the Camera class. The error message I’m getting is: TypeError: Camera.__init__() got an unexpected keyword argument ‘fov’ Here’s the relevant code snippet: class Scene(): def __init__(self, ambient_color = vec3(0.01, 0.01, 0.01), n = vec3(1.0,1.0,1.0)) :… Read More TypeError in Python: "init() got an unexpected keyword argument 'fov'" when creating an instance of a Camera class
I want to have a class return a list, tuple or dictionary. And use it like a regular list class MyClass: def __init__(self, *args): for i in range(len(args)): args[i] += 1 def __some_dunder_method__(self): return self.args obj = MyClass(0, 1, 2, 3, 4, 4) print(obj[1]) # Wanted Output: 2 print(obj[2:5]) # Wanted Output: [3, 4, 5]… Read More How would i have a class return a list, tuple or dictionary?
What is the ‘correct’ or ‘right’ way to handle classes with many attributes? I have a class with 37 attributes and it seems quite excessive and not practical. This class is going to be used to handle inserting this data to a database, retrieve that information from a database and its also going to be… Read More Class with many attributes, what would be the 'right' way to do this?
In Python 3, I have a list (my_array) that contains an instance of the Demo class with a certain attribute set on that instance. In my case, the attribute is value: int = 4. Given an instance of the Demo class, how can I determine if that instance already exists in my_array with the same… Read More How can I check if an instance of a class exists in a List in Python 3?
class Car: def __init__(self, pos=0): self.pos = pos def move(self, direction): self.pos = self.pos + direction def get_position(self): return self.pos def main(): n = int(input()) car = Car() for _ in range(n): instruction = input() if instruction == "MOVE": distance = int(input()) car.move(distance) elif instruction == "POSITION": position = car.get_position() print(position) if __name__ == ‘__main__’:… Read More I am new to python and i dont know why this code isnt working
Im a beginner at c++, i followed some advice on using lambdas instead of a comparator class for my set. I have something like this: class Processor { private: const function<bool(std::string, std::string)> _lenComp = [](string a, string b) { return a != b && a.size() >= b.size(); }; set<string, decltype(_lenComp)> _inputSet; … public: Processor() :… Read More C++ bad function call