I already submitted a bug, but I'm curious to know if anybody ran into
this.
Try this program on Windows with python 2.3.3 and with python 2.2:
import shelve
a=shelve.open("a", "c")
for x in xrange(10000):
a[str(x)]=x
print str(x) + "\r",
a.close()
After about 7000/8000 insertions, the program gets so slow...
With python 2.2 it ends in a blink!
Really strange, isn't it?
Ciao.
Marco. 5 1576
Marco> Try this program on Windows with python 2.3.3 and with python 2.2:
Marco> import shelve
Marco> a=shelve.open("a", "c")
Marco> for x in xrange(10000):
Marco> a[str(x)]=x
Marco> print str(x) + "\r",
Marco> a.close()
Marco> After about 7000/8000 insertions, the program gets so slow...
Marco> With python 2.2 it ends in a blink!
Marco> Really strange, isn't it?
Perhaps not. After running your script, what does
whichdb.whichdb("a")
report under both versions? My wild-ass guess is that the underlying anydbm
module finds dumbdbm under 2.3.3 and something more industrial strength like
bsddb under 2.2.
Skip
On Wed, 21 Jan 2004 15:47:20 -0600, Skip Montanaro <sk**@pobox.com>
wrote: whichdb.whichdb("a") report under both versions? My wild-ass guess is that the underlying anydbm module finds dumbdbm under 2.3.3 and something more industrial strength like bsddb under 2.2.
Skip,
you are right!
Under 2.3.3: 'dbhash'
Under 2.2: 'bsddb185'
Now the question is: is it possible to use bsddb185 with python 2.3.3?
Thanks.
Ciao.
Marco. whichdb.whichdb("a") report under both versions? My wild-ass guess is that the underlying anydbm module finds dumbdbm under 2.3.3 and something more industrial strength like bsddb under 2.2.
Marco> Skip,
Marco> you are right!
Sort of.
Marco> Under 2.3.3: 'dbhash'
Marco> Under 2.2: 'bsddb185'
'dbhash' and 'bsddb185' are really the same beast.
Marco> Now the question is: is it possible to use bsddb185 with python
Marco> 2.3.3?
You're barking up the wrong tree. That's not the problem.
Skip
On Wed, 21 Jan 2004 18:37:17 -0600, Skip Montanaro <sk**@pobox.com>
wrote: 'dbhash' and 'bsddb185' are really the same beast.
Marco> Now the question is: is it possible to use bsddb185 with python Marco> 2.3.3?
You're barking up the wrong tree. That's not the problem.
So you're telling me that dbhash (namely /python2.3/DLLs/_bsddp.pyd)
on python 2.3.3 for Windows has a problem?
Skip> 'dbhash' and 'bsddb185' are really the same beast.
Marco> Now the question is: is it possible to use bsddb185 with python
Marco> 2.3.3?
Skip> You're barking up the wrong tree. That's not the problem.
Marco> So you're telling me that dbhash (namely
Marco> /python2.3/DLLs/_bsddp.pyd) on python 2.3.3 for Windows has a
Marco> problem?
It would seem so. See my most recent post to your bug report. Switching
between bsddb.hashopen and bsddb.btopen seems to make a huge difference.
Skip This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
by: Rami A. Kishek |
last post by:
Hi - this mysterious behavior with shelve is just about to kill me. I
hope someone here can shed some light. First of all, I have this piece
of code which uses shelve to save instances of some...
|
by: seth |
last post by:
Last week I encountered an AttributeError in my unit tests that I
wasn'table to catch with an "except AttributeError" statement.
The problem stemmed from a class that raised an error inside...
|
by: Eric Wichterich |
last post by:
Hello Pythonistas,
I use Python shelves to store results from MySQL-Queries (using Python
for web scripting).
One script searches the MySQL-database and stores the result, the next
script reads...
|
by: ex laguna |
last post by:
Hi, I have ran into a problem with py2exe 0.5.0 and shelve in python
2.3.3. The script works fine standalone, but not with py2exe.
Does anyone have a solution of workaround for this? Thanks...
|
by: Michael Mulcahy |
last post by:
Hi All,
Problem: Shelve module doesn't like me
OS: Win2000
version: 2.3.3
Here is simple reproduction code and the error that occurs:
import shelve, anydbm
|
by: Tor Erik Soenvisen |
last post by:
Hi,
Have a problem using shelve on windows and unix. While my windows box
supports dbhash, my unix box supports gdbm, and neither supports what the
other does. The problem arises when I try to...
|
by: gluckj |
last post by:
Hi,
I'm not a Win ME fan myself (I'm a Mac user), but I'm here in Thailand
developing software for special-needs kids, and the test PC in my home
office is a Win ME machine (sigh). So when I...
|
by: Matthew Schibler |
last post by:
I'm a newbie to Python, with some experience using perl (where I used
nested arrays and hashes extensively). I am building a script in
python for a MUD I play, and I want to use the shelve module...
|
by: Edwin.Madari |
last post by:
since choice of dbm used by shelve http://docs.python.org/lib/node327.html depends on os, and whats available on it, shevle files saved on one os, most likely do not work on another os, sometimes on...
|
by: DolphinDB |
last post by:
Tired of spending countless mintues downsampling your data? Look no further!
In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
|
by: ryjfgjl |
last post by:
ExcelToDatabase: batch import excel into database automatically...
|
by: isladogs |
last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM).
In this month's session, we are pleased to welcome back...
|
by: Vimpel783 |
last post by:
Hello!
Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
|
by: ArrayDB |
last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
|
by: CloudSolutions |
last post by:
Introduction:
For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
|
by: Defcon1945 |
last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
|
by: Shællîpôpï 09 |
last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
|
by: Faith0G |
last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
| |