Am 24.02.12 14:37, schrieb Rick Johnson:
> I get sick and tired of doing this!!!
>
> if maxlength == UNLIMITED:
> allow_passage()
> elif len(string) > maxlength:
> deny_passage()
>
> What Python needs is some constant that can be compared to ANY numeric
> type and that constant will ALWAY
Am 25.02.12 18:54, schrieb MRAB:
>> If there is no limit for len(string), why not simply use
>>
>> # get_limit() returns None if there is no limit
>> maxlength = get_limit()
>> if maxlength and (len(string)<= maxlength):
>> allow_passage()
>> else:
>> deny_passage()
>>
> That should be:
>
Am 25.02.12 21:35, schrieb Rick Johnson:
> On Feb 25, 11:54 am, MRAB wrote:
>> [...]
>> That should be:
>> if maxlength is not None and len(string) <= maxlength:
>
> Using "imaginary" infinity values defiles the intuitive nature of your
> code. What is more intuitive?
>
> def confine_length(stri
Am 26.02.12 13:52, schrieb Chris Angelico:
> On Sun, Feb 26, 2012 at 10:56 PM, Wolfgang Meiners
> wrote:
>> That means:
>> if maxlength and (len(string) <= maxlength):
>>
>> is equivalent to
>> if (maxlength is not None) and (len(string) <= maxlength
Am 26.02.12 14:16, schrieb Wolfgang Meiners:
>
> I just had a closer look at it. It seems to be more complicated than i
> thougth: You will have to write
Obviously not close enough, as i just learned.
>
> def confine_length(string, maxlength=None):
> if maxlength:
Hi all,
i dont understand, how sqlalchemy deletes from m:n relationships.
Maybe, someone can explain to me, how to delete in the following program:
(pyhton3, sqlalchemy 0.7.0)
=
> #!/usr/bin/env python3
> # -*- coding: utf-8 -*
Hi all,
I have written some helper functions for the tkinter.ttk.treeview widget
(using python3, version 3.2). This functions dont work as i expect:
#! /usr/bin/env pyhon3
# -*- encoding: utf-8 -*-
from tkinter import *
from tkinter.ttk import * # now tkinter widgets get replaced by
Hi all,
when i type the following code under python3, version 3.2 using osx 10.6.8:
##
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
from tkinter import *
from tkinter.ttk import *
from tkinter.font import Font
root = Tk()
tv = Treevi
Am 25.07.11 02:11, schrieb Saul Spatz:
> In tcl/tk an Entry widget can be set to validate its contents with the
> validate option. You have to give it a validatecommand (vcmd), which is a
> tcl script that runs when some action triggers validation. Usually, the
> script would use "percent subs
Hi,
I am trying to build an application using sqlalchemy.
in principle i have the structure
#==
from sqlalchemy import *
from sqlalchemy.orm import *
metadata = MetaData('sqlite://')
a_table = Table('tf_lehrer', metadata,
Column('id', Integer, pr
Am 31.05.11 13:32, schrieb Daniel Kluev:
> On Tue, May 31, 2011 at 8:40 AM, Wolfgang Meiners
> wrote:
>> metadata = MetaData('sqlite://')
>> a_table = Table('tf_lehrer', metadata,
>>Column('id', Integer, primary_key=True),
>>C
Am 31.05.11 11:55, schrieb Chris Withers:
> Hi Wolfgang,
>
> On 30/05/2011 22:40, Wolfgang Meiners wrote:
>> I am trying to build an application using sqlalchemy.
>
> You're likely to get much better help here:
>
> http://www.sqlalchemy.org/support.html#mail
I just found a second method on
http://docs.python.org/howto/unicode
you can use tho module codecs and then simply write
import codecs
f = codecs.open('unicode.rst', encoding='utf-8')
for line in f:
print repr(line)
Wolfgang
--
http://mail.python.org/mailman/listinfo/python-list
I think it helped me very much to understand the problem.
So if i deal with nonascii strings, i have a 'list of bytes' and need an
encoding to interpret this list and transform it to a meaningful unicode
string. Decoding does the opposite.
Whenever i 'cross the border' of my program, i have to en
Am 31.05.11 23:56, schrieb Chris Angelico:
> On Wed, Jun 1, 2011 at 5:52 AM, Wolfgang Meiners
> wrote:
>> Whenever i 'cross the border' of my program, i have to encode the 'list
>> of bytes' to an unicode string or decode the unicode string to a 'list
&g
Hi,
one to many relationships are fairly common, i think. So there should be
a recommended way to insert data into such a relation using python.
Given the following programm, what is the recommended way to insert the
list of NewEmployees to the database?
Peter Otten schrieb:
> Peter Otten wrote:
>
> If you create indices for floors (and rooms)
>
> cur.execute("""create unique index room_index on rooms (fid, number);""")
> cur.execute("""create unique index floor_index on floors (floor);""")
>
> the addition of missing rows can be simplified to
>
Bryan schrieb:
> Wolfgang Meiners wrote:
>> one to many relationships are fairly common, i think. So there should be
>> a recommended way to insert data into such a relation using python.
>>
>> Given the following programm, what is the recommended way to insert the
>
Wolfgang Meiners schrieb:
[... example of a simple sql-database and relating questions ...]
so after reading the hints of Peter Otten and Bryan i played around a
bit and got the following solution. Of course it would be much simpler
following Bryans idea of natural keys but i think, i will go
Liebe Kirsten,
ich liebe dich und freue mich, dass du bald auch Ferien hast.
Wolfgang
--
http://mail.python.org/mailman/listinfo/python-list
Hello all,
I would like to have a function to edit values in a database.
So I am reading values from the database and do something like
newString = edit(oldString)
and then oldString is written to the screen and can be edited in a
vi-like manner for example. The function edit should return the
Am 19.10.10 11:31, schrieb Peter Otten:
> Wolfgang Meiners wrote:
>>
>> newString = edit(oldString)
>>
>
> When readline is available:
>
> http://mail.python.org/pipermail/python-list/2009-June/1209309.html
Thank you for this hint.
Wolfgang
--
http://mail.p
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