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How to Use the breakpoint() Function for Interactive Debugging in Python

Insert a breakpoint() call into your code to drop into an interactive debugger session where you can inspect variables and step through execution.

debugging pdb breakpoint

Python

def calculate_total(prices, discount=0):
    """Calculates total price with optional discount."""
    subtotal = sum(prices)
    breakpoint()  # Interactive debugging session starts here
    final_total = subtotal * (1 - discount)
    return final_total


if __name__ == "__main__":
    items = [25.50, 13.25, 9.99, 5.7…

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