Re: Python 2.1 out

2001-04-19 Thread Carey Evans 
Sean 'Shaleh' Perry [EMAIL PROTECTED] writes:

 last I checked it only helped derivatives of python, not python itself.

AIUI, the point is that Python 2.1 is a derivative of CNRI Python 1.6.1.

-- 
 Carey Evans  http://home.clear.net.nz/pages/c.evans/

Quiet, you'll miss the humorous conclusion.

Re: Python 2.1 out

2001-04-19 Thread Florian Weimer 
D-Man [EMAIL PROTECTED] writes:

 On Wed, Apr 18, 2001 at 10:25:52PM +0200, Florian Weimer wrote:
 | Steve Purcell [EMAIL PROTECTED] writes:
 | 
 |  Licenses aside, there are the same technical issues with Python 2.1
 |  as with Python 2.0. 
 | 
 | Python 2.1 seems to print some diagnostic messages during run-time;
 | this might affect scripts which are invoked in cron jobs.
 
 Are you sure they aren't warnings regarding code that will not work as
 expected in future versions?

Yes, I think so.  But that doesn't make them less annoying. ;-)

Re: Python 2.1 out

2001-04-19 Thread Gregor Hoffleit 
On Thu, Apr 19, 2001 at 10:04:24AM +0200, Florian Weimer wrote:
 D-Man [EMAIL PROTECTED] writes:
 
  On Wed, Apr 18, 2001 at 10:25:52PM +0200, Florian Weimer wrote:
  | Steve Purcell [EMAIL PROTECTED] writes:
  | 
  |  Licenses aside, there are the same technical issues with Python 2.1
  |  as with Python 2.0. 
  | 
  | Python 2.1 seems to print some diagnostic messages during run-time;
  | this might affect scripts which are invoked in cron jobs.
  
  Are you sure they aren't warnings regarding code that will not work as
  expected in future versions?
 
 Yes, I think so.  But that doesn't make them less annoying. ;-)

Could you mail an example of such a message ?

Gregor

Re: Python 2.1 out

2001-04-19 Thread Florian Weimer 
Gregor Hoffleit [EMAIL PROTECTED] writes:

[Python warning messages]

 Could you mail an example of such a message ?

y = None
def fun():
y = None
def bar():
y
bar()

fun()

results in:

file:2: SyntaxWarning: local name 'y' in 'fun' shadows use of 'y' as global 
in nested scope 'bar'
  def fun():

There are probably other kinds of warnings; PyErr_Warn is called in a
number of places.  Python 2.1 provides a mechanism to switch off
warnings (the 'warnings' module, don't ask me about details :-/), but
by default, they are printed to stderr.

Re: Python 2.1 out

2001-04-19 Thread D-Man 
On Thu, Apr 19, 2001 at 12:17:40PM +0200, Florian Weimer wrote:
| Gregor Hoffleit [EMAIL PROTECTED] writes:
| 
| [Python warning messages]
| 
|  Could you mail an example of such a message ?
| 
| y = None
| def fun():
| y = None
| def bar():
| y
| bar()
| 
| fun()
| 
| results in:
| 
| file:2: SyntaxWarning: local name 'y' in 'fun' shadows use of 'y' as global 
in nested scope 'bar'
|   def fun():

Yeah, that code will almost certainly break in 2.2 when nested scopes
become mandatory.  It may have been intended, but assignment to a
local variable overshadowing a global is rarely the intended effect.

Anyways, if you want to get rid of those message now, without changing
the code use the  -W option to the interpreter.  Example :

$ python -W ignore Scope.py

(I created a file called Scope.py with that code in it)


See the last paragraph at
http://www.python.org/doc/current/lib/warning-filter.html

-D