Commenting print() breaks the Python code

I was faced with a very strange problem. With print() this code works.

def max_pairwise_product(numbers):
    max_1 = max(numbers)
    numbers.remove(max_1)
    max_2 = max(numbers)
    return max_1 * max_2


if __name__ == '__main__':
    input_n = int(input())
    print()              # <- comment of this line breaks the code
    input_numbers = [int(x) for x in input().split()]
    print(max_pairwise_product(input_numbers))

If I comment or delete the 10-th line with print() I got an error:

Traceback (most recent call last):
  File "C:Users...maximum_pairwise_product_fast.py", line 12, in <module>
    print(max_pairwise_product(input_numbers))
  File "C:Users...maximum_pairwise_product_fast.py", line 2, in max_pairwise_product
    max_1 = max(numbers)
ValueError: max() arg is an empty sequence*

Process finished with exit code 1

I use Python 3.9. PyCharm. I tried to launch with different virtual environments with Python 3.8 and 3.10 – the same error. When I launch in Jupyter and Colab – it is fane – no error.

There are no issues with any other Python script. I used the installation for several months and there was nothing strange.

It is so strange that I have no idea. Could you please help me?

Answer

Thank you all for helping to refer me in the right direction. The reason for the error was a bug in PyCharm. It sent not was typed. The issue disappeared after the PyCharm update from version 2022.1.1 to 2022.1.2.

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Answer