In article [EMAIL PROTECTED],
Neil Cerutti [EMAIL PROTECTED] wrote:
On 2007-08-11, Alex Martelli [EMAIL PROTECTED] wrote:
Neil Cerutti [EMAIL PROTECTED] wrote:
...
The Python Language Reference seems a little confused about the
terminology.
3.4.7 Emulating numeric types
6.3.1
Aahz schreef:
In article [EMAIL PROTECTED],
Neil Cerutti [EMAIL PROTECTED] wrote:
On 2007-08-11, Alex Martelli [EMAIL PROTECTED] wrote:
Neil Cerutti [EMAIL PROTECTED] wrote:
...
The Python Language Reference seems a little confused about the
terminology.
3.4.7 Emulating numeric
In article [EMAIL PROTECTED],
Roel Schroeven [EMAIL PROTECTED] wrote:
Aahz schreef:
Although Alex is essentially correct, the situation is a bit more complex
and you are correct that augmented assignment allows the object to decide
whether to mutate in place. However, the critical part of
Aahz schreef:
def foo(bar): bar[0] += ['zap']
...
import dis
dis.dis(foo)
1 0 LOAD_FAST0 (bar)
3 LOAD_CONST 1 (0)
6 DUP_TOPX 2
9 BINARY_SUBSCR
10 LOAD_CONST
Aahz wrote:
tup=([],)
tup[0] += ['zap']
Traceback (most recent call last):
File stdin, line 1, in module
TypeError: 'tuple' object does not support item assignment
snip
Obviously, you can easily work around it:
t = ([],)
l = t[0]
l += ['foo']
t
(['foo'],)
This is quite
OKB (not okblacke) schreef:
Aahz wrote:
tup=([],)
tup[0] += ['zap']
Traceback (most recent call last):
File stdin, line 1, in module
TypeError: 'tuple' object does not support item assignment
snip
Obviously, you can easily work around it:
t = ([],)
l = t[0]
l += ['foo']
t
In article [EMAIL PROTECTED],
OKB (not okblacke) [EMAIL PROTECTED] wrote:
This sentence is phrased as though it is the whole story, but it
isn't, because the operation might not in fact wind up being an
assignment. Shouldn't there be an except see below or something
there, to alert the
In article [EMAIL PROTECTED],
Roel Schroeven [EMAIL PROTECTED] wrote:
I used to interpret the target in 'The target is only evaluated once'
more like an L-value in C/C++. That's not correct, of course, but I
didn't understand exactly how wrong it was until now.
It's true almost everywhere
