[PyX-devel] [ pyx-Bugs-1042458 ] Error with graph.data.list

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Bugs item #1042458, was opened at 2004-10-07 21:03
Message generated for change (Comment added) made by wobsta
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Marcus Mendenhall (mendenhall)
Assigned to: Nobody/Anonymous (nobody)
Summary: Error with graph.data.list

Initial Comment:
In graph.data.list(), there are two places where PyX attempts to 
access the builtin list() function as __builtins__.list under certain 
conditions.  This is not correct, since __builtins__ appears as a 
dictionary and has no list attribute, and throws an exception.  

If your _really must_ create a class with the name graph.data.list 
(which, because of the possible conflict with python's built-in list() 
function, especially if someone does 
from graph.data import *
may be a bad idea), it is probably best to, at the top of graph.data, 
do something like

builtin_list=list

class list():...

and then use a=builtin_list(...)

where you currently use __builtins__.list(...)

In general, though, I think it would be even better to rename this 
class to avoid some really mysterious behavior if anyone does do 
an import * from it.

Marcus Mendenhall



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>Comment By: André Wobst (wobsta)
Date: 2004-10-08 14:01

Message:
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I've just corrected the bug in the 0.6.x trunk. In CVS head this problem 
does not occur anymore, since the conversion of a sequence into a list is 
not necessary anymore. (Instead the new data handling allows for direct 
mixing of several data sources, which also removes some strange side 
effects.)

Beside that I'm totally aware of the problem of the name "list". The 
name comes out of the following consitency consideration: Creating 
graph data from a file is done by data.file, creating data from out of a 
function is done by data.function, creating data from a different data is 
done by data.data ... so what's the name for creating data from a list of 
points? I thought data.list would be best here ... but feel free to suggest 
a different naming. We could do data.points, but I do not really like it. 
Feel free to convince me or suggest other possibilities. I do not stop at 
those changes currently since I classify PyX to still be in the design 
phase ...

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