What special methods need to be implemented when creating a custom context manager in Python?

To create a custom context manager in Python, you need to implement two special methods:

• __enter__(self): called when entering the with block. Usually, resource preparation occurs here. The method should return an object that will be bound to the variable after as.

• __exit__(self, exc_type, exc_val, exc_tb): called when exiting the with block, even if an exception occurs inside the block. Resource cleanup usually happens here. The parameters allow handling exceptions if they occur.

Example:

class MyContextManager:
    def __enter__(self):
        print("Entering context")
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        print("Exiting context")
        if exc_type:
            print(f"Handled exception: {exc_type}")

with MyContextManager() as cm:
    print("Inside with block")