False — Advanced Playground

Boolean literal representing false/0

Python Playground

class EmptyContainer:
    def __init__(self):
        self.items = []
    def __bool__(self):
        return len(self.items) > 0
    def __repr__(self):
        return f"EmptyContainer({self.items})"

c = EmptyContainer()
print(f"{c} is {'truthy' if c else 'falsy'}")
c.items.append(1)
print(f"{c} is {'truthy' if c else 'falsy'}")

Output

Click "Run" to execute your code

Implementing __bool__ lets you control how your objects behave in boolean contexts.

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

View all Advanced examples for False