[Trent Mick]
> >>> i = -2147483648
> OverflowError: integer literal too large
> >>> i = -2147483648L
> >>> int(i) # it *is* a valid integer literal
> -2147483648
Python's grammar is such that negative integer literals don't exist; what
you actually have there is the unary minus operator applied to positive
integer literals; indeed,
>>> def f():
return -42
>>> import dis
>>> dis.dis(f)
0 SET_LINENO 1
3 SET_LINENO 2
6 LOAD_CONST 1 (42)
9 UNARY_NEGATIVE
10 RETURN_VALUE
11 LOAD_CONST 0 (None)
14 RETURN_VALUE
>>>
Note that, at runtime, the example loads +42, then negates it: this wart
has deep roots!
> ...
> And was the effect on functions like PyOS_strtol() down the pipe
> missed?
More that it was considered an inconsequential endcase. It's sure not worth
changing the grammar for <wink>. I'd rather see Python erase the visible
distinction between ints and longs.
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