- Python Advanced Tutorial
- Python - Iterators and Generators
- Python - Decorators
- Python - Context Managers
- Python - Metaclasses
- Python - Concurrency and Parallelism: Threading, Multiprocessing
- Python Advanced OOP and Design Patterns
- Python - Method Resolution Order (MRO)
- Python - Design Patterns
- Python - Structural Design Patterns
- Python - Behavioral Design Patterns
- Python - Creational Design Patterns
- Python Data Handling and Analysis
- Python - Advanced-Data Manipulation with Pandas
- Python - Multi-level Indexing (Hierarchical Indexing)
- Python - Data Aggregation and Group Operations
- Python - Pivot Tables
- Python - Time Series and Date functionality
- Python - Handling Missing Data
- Python - Data Visualization with Matplotlib and Seaborn
- Python - Matplotlib
- Python - Seaborn
- Python - Combining Matplotlib and Seaborn
- Python - Advanced NumPy for Numerical Data
- Python - Broadcasting
- Python - Universal Functions (ufuncs)
- Python - Array Indexing and Slicing
- Python - Memory Layout
- Python - Vectorization
- Python for Automation and Scripting
- Python - Automation Scripts for Everyday Tasks
- Python - Working with APIs for Automation
- Python - Introduction to Shell Scripting and System Administration
- Conclusion
Python - Behavioral Design Patterns
Behavioral Design Patterns in Python
Behavioral patterns are concerned with how things cooperate with one other and divide up tasks among themselves. By concentrating on how items interact and communicate, they assist objects in working together and assigning tasks to one another in order to complete a task.
Example: Observer Pattern
Objects can inform other objects about changes in their state by using the Observer pattern. Implementing event handling systems makes extensive use of it.
class Subject:
def __init__(self):
self._observers = []
def register_observer(self, observer):
self._observers.append(observer)
def notify_observers(self, message):
for observer in self._observers:
observer.notify(self, message)
class Observer:
def notify(self, subject, message):
raise NotImplementedError
class ConcreteObserver(Observer):
def notify(self, subject, message):
print(f"Observer got message from {subject}: {message}")
# Usage
subject = Subject()
observer1 = ConcreteObserver()
observer2 = ConcreteObserver()
subject.register_observer(observer1)
subject.register_observer(observer2)
subject.notify_observers("Hello!")To get updates, ConcreteObserver objects in this example subscribe to Subject. All registered observers receive a notification when Subject calls notify_observers.
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