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How to Dynamically Create a Class at Runtime in Python?

You can dynamically create a class in Python using the built-in type() function. This is one of the simplest ways to leverage metaclasses.

Example:

# Create a new class dynamically
MyDynamicClass = type('MyDynamicClass', (object,), {
'say_hello': lambda self: print("Hello!")
})

# Use the dynamically created class
obj = MyDynamicClass()
obj.say_hello()

Explanation:

* 'MyDynamicClass': Name of the new class
* (object,): Tuple of base classes (here, just inheriting from object)
* {'say_hello': ...}: Dictionary of attributes/methods for the class

Output:

Hello!

This is a powerful feature used in metaprogramming and framework design.



#PythonTips #Metaclass #PythonOOP #DynamicClass #typeFunction #AdvancedPython #CodingTips

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🧑‍🎓 A Cool Python Tip: How to Access Class Variables? 🐍

---

🌟 Scenario:
Imagine you have a variable in a class and want to access it in a method. For example:

class MyClass:
my_variable = "I am a class variable"

def my_method(self):
return f"Accessing variable: {self.my_variable}"

# Test
obj = MyClass()
print(obj.my_method())

📤 Output: Accessing variable: I am a class variable

---

🔍 Explanation:
- In this example, my_method is a regular instance method with the self argument.
- You can access the class variable with self.my_variable, but you need to create an instance of the class (obj = MyClass()).
- What if you want to access it without creating an instance? That’s where @classmethod comes in! 👇

---

💡 Better Way with @classmethod:
If you want to access the variable directly using the class name, use @classmethod:

class MyClass:
my_variable = "I am a class variable"

@classmethod
def my_method(cls):
return f"Accessing variable: {cls.my_variable}"

# Test
print(MyClass.my_method())

📤 Output: Accessing variable: I am a class variable

---

🔑 What’s the Difference?
- In the first case (regular method), you need to create an instance to call the method.
- In the second case (with @classmethod), you can call the method directly with the class name (MyClass.my_method()) and cls gives you access to class variables.
- Another option is @staticmethod, but you’d have to manually write the class name (e.g., MyClass.my_variable).

---

🎯 Takeaway:
- If you want to work with an instance ➡️ Use a regular method with self.
- If you want to work directly with the class ➡️ Use @classmethod.

Which method do you like more? Drop your thoughts in the comments! 🗣️

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#Python #ProgrammingTips #PythonClass
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🔰 Python Question / Quiz;

What is the output of the following Python code?
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⌨️ Python Quiz
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What will this Python code output? #junior #python

A task for beginners.

s = set()
a = [1, 2, 3]
s.add(tuple(a))
print(s)
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2025/06/19 00:32:07
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