Comprehensive Python Practice 2

Which defines a function?

What is self in class methods?

Which opens file for append?

What does json.loads() do?

Which catches all exceptions?

What is a decorator?

Which creates instance variable?

What does super() do?

Which module handles CSV?

What is __init__.py?

Explain *args and **kwargs with examples.

What is inheritance? Explain with example.

Explain try-except-else-finally blocks.

What is the difference between @staticmethod and @classmethod?

Explain file context manager and its benefits.

What is method overriding? When to use it?

Explain the difference between read() and readlines().

What is a lambda function? When is it useful?

Explain __str__ and __repr__ methods.

What is the purpose of if __name__ == '__main__':?

Write a decorator that logs function calls with arguments.

Create a Shape class with Circle and Rectangle subclasses.

Write a program to copy CSV file with data transformation.

Create a custom exception hierarchy for banking errors.

Write a recursive function with memoization for Fibonacci.

Create a config manager class that reads/writes JSON settings.

Predict output: class A: def __init__(self): self.x = 10 a = A() print(a.x)

Find error: def outer(): x = 5 def inner(): x += 1 inner() outer()

Predict output: try: 1/0 except ZeroDivisionError: print('Zero') except Exception: print('General')

Find error: with open('file.txt', 'w') as f: f.write('Hello') print(f.read())

Predict output: @decorator def func(): return 42 print(func())

Find error: import json data = {'date': datetime.now()} print(json.dumps(data))

Predict output: class B(A): def __init__(self): super().__init__() self.y = 20 b = B() print(b.x, b.y)

Find error: for i in range(5): if i == 3: break else: print('Done')