How to determine what exceptions a method might raise?

[Duncan Booth]

"George Sakkis" <george.sakkis at gmail.com> wrote:

> As for the OP's question, since file is a fixed builtin, I think it
> should be possible to know all the possible exceptions that can be
> raised; I'm not sure if it's clearly documented though.

Just calling 'file' the most obvious exceptions it can raise are:

    	IOError
    	MemoryError
    	ValueError

I'm not sure if it can return UnicodeDecodeError, it looks as though it may 
be possible on windows, but I couldn't trigger it.

Assigning the result to a variable can of course raise absolutely any 
exception. That's the main problem: just because a C function raises only a 
few different exceptions doesn't mean that the line of code calling it 
cannot generate a host more.