What happens when a division by zero occurs in Python?

When a division by zero occurs in Python, it raises a ZeroDivisionError exception, which immediately halts the execution of the code unless it is caught and handled using a try-except block. The concept of division by zero is mathematically undefined, and Python adheres to this principle by terminating the process and signaling that an error occurred.

The option stating that it "returns an error just like dividing by zero" effectively captures this behavior. While the exact error message may not explicitly state that it "returns an error," the important aspect is that the operation cannot be completed successfully, and an exception is raised to indicate that something has gone wrong.

Understanding this behavior is critical for writing robust Python code that can gracefully handle exceptions, especially when performing operations that may lead to division by zero due to variable input or calculations.