todo: strip thinking from code commands responses

[Robitx]

<think>The user wants me to write a script that computes the Nth Fibonacci number. The file is currently empty (the selection shows just empty content between the triple backticks). I need to provide a Python script that computes Fibonacci numbers.

I should write a clean, efficient implementation. I can either do it recursively (simple but inefficient for large N) or iteratively (more efficient). I'll go with an iterative approach since it's more practical.

I should include a function to compute Fibonacci and maybe a main section to test it or take input.</think>

```python
def fibonacci(n):
    if n <= 0:
        return 0
    elif n == 1:
        return 1
    
    a, b = 0, 1
    for _ in range(2, n + 1):
        a, b = b, a + b
    return b

if __name__ == "__main__":
    n = int(input("Enter N: "))
    result = fibonacci(n)
    print(f"Fibonacci({n}) = {result}")
```

Thinking is fine as an artifact in chats, but code responses should strip it keeping only the snippet.

#277
#278