On 08/20/2013 11:15 PM, Ethan Furman wrote:
On 08/14/2013 09:27 PM, Nick Coghlan wrote:
For enums, I believe they should be formatted like their
base types (so !s and !r will show the enum name, anything without
coercion will show the value) .
I agree. While one of the big reasons for an Enum type was the pretty
str and repr, I don't see format in that area.
How often will one type in `"{}".format(some_var)` to find out what type
of object one has? Myself, I would just type `some_var`.
So, these are some of the ways we have to display an object:
str() calls obj.__str__()
repr() calls obj.__repr__()
"%s" calls obj.__str__()
"%r" calls obj.__repr__()
"%d" calls... not sure, but we see the int value
"{}".format() should (IMO) also display the value of the object
Using int as the case study, its presentation types are ['b', 'd', 'n',
'o', 'x', 'X']. Notice there is no 's' nor 'r' in there, as int expects
to display a number, not arbitrary text.
So, for mixed-type Enumerations, I think any format calls should simply
be forwarded to the mixed-in type (unless, of course, a custom
__format__ was specified in the new Enumeration).
--
~Ethan~
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