On 04/14/2016 07:01 AM, Random832 wrote:
On Thu, Apr 14, 2016, at 09:50, Chris Angelico wrote:
Adding integers and floats is considered "safe" because most people's
use of floats completely compasses their use of ints. (You'll get
OverflowError if it can't be represented.) But float and Decimal are
considered "unsafe":
--> 1.5 + decimal.Decimal("1.5")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for +: 'float' and
'decimal.Decimal'
This is more what's happening here. Floats and Decimals can represent
similar sorts of things, but with enough incompatibilities that you
can't simply merge them.
And what such incompatibilities exist between bytes and str for the
purpose of representing file paths? At the end of the day, there's
exactly one answer to "what file on disk this represents (or would
represent if it existed)".
Interoperability with other systems and/or libraries. If we use
surrogateescape to transform str to bytes, and the other side does not,
we no longer have a workable path.
--
~Ethan~
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