[kstrauser]

Not directly, it wasn’t:

  >>> open('foo') * 3
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  TypeError: unsupported operand type(s) for *: '_io.TextIOWrapper' and 'int'

You have to go to some length to get Python to mix types so badly.

[Orygin]

Won't prevent you from shipping this in prod. The stack trace you shown only appearing when you execute the code.

[kstrauser]

Or run mypy etc., because you care about your code.

[cess11]

Tests will, however.

[Orygin]

Sure but that's not what we were talking about. Plus I don't need to add tests like this in my code for it to be valid once compiled