[Python-Dev] Re: def fn (args) [dec,dec]: (original) (raw)

Edward K. Ream edreamleo at charter.net
Fri Aug 6 17:08:04 CEST 2004

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[quote] Problems with this form:

• it hides crucial information (e.g. that it is a static method) after the signature, where it is easily missed

• it's easy to miss the transition between a long argument list and a long decorator list

• it's cumbersome to cut and paste a decorator list for reuse, because it starts and ends in the middle of a line

Given that the whole point of adding decorator syntax is to move the decorator from the end ("foo = staticmethod(foo)" after a 100-line body) to the front, where it is more in-your-face, it should IMO be moved all the way to the front. [end quote]

Ah Jeeze :-) Are you really, truly saying that you want to introduce @ to help people format their declarations? This just seems like complete nonsense to me.

How about:

class C(object):

 def longMethodNameForEffect(
    longArgumentOne=None,
    longArgumentTwo=42)\
 [
     staticmethod,
     funcattrs(grammar="'@' dotted_name [ '(' [arglist] ')' ]",
          status="experimental", author="BDFL")
 ]:
SNIP

or even:

class C(object):

 def longMethodNameForEffect(
    longArgumentOne=None,
    longArgumentTwo=42)\
 \
 # ***** DECORATION *****
 [
     staticmethod,
     funcattrs(grammar="'@' dotted_name [ '(' [arglist] ')' ]",
          status="experimental", author="BDFL")
 ]:
SNIP

Isn't "a total jumble of stuff ending with a smiley." a complete red herring? Look, there is a lot of information that has to be presented, whatever the means. How is any syntax going to simplify:

funcattrs(grammar="'@' dotted_name [ '(' [arglist] ')' ]", status="experimental", author="BDFL")

??

And are you seriously saying that problems cutting and pasting should drive this discussion?

real-python-programmers-don't-need-help-formatting-ly yours,

Edward

P.S. In Leo one would render this:

class C(object):

 def longMethodNameForEffect(
    longArgumentOne=None,
    longArgumentTwo=42) [
    << decoration for longMethodNameForEffect >>
 ]:
 SNIP

but I suppose that's not relevant :-) BTW, << decoration for longMethodNameForEffect >> would be syntax colored in red by default (with blue << and >>) so it would stand out.

EKR

Edward K. Ream email: edreamleo at charter.net Leo: Literate Editor with Outlines Leo: http://webpages.charter.net/edreamleo/front.html

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