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by: Francis Avila |
last post by:
Below is an implementation a 'flattening' recursive generator (take a nested
iterator and remove all its nesting). Is this possibly general and useful
enough to be included in itertools? (I know *I* wanted something like it...)
Very basic examples:
>>> rl = , '678', 9]]
>>> list(flatten(rl))
>>> notstring = lambda obj: not isinstance(obj, type(''))
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by: Francis Avila |
last post by:
A little annoyed one day that I couldn't use the statefulness of
generators as "resumable functions", I came across Hettinger's PEP 288
(http://www.python.org/peps/pep-0288.html, still listed as open, even
though it's at least a year old and Guido doesn't seem very hot on the
idea). I'm not too sure of its ideas on raising exceptions in
generators from outside (although it looks like it might be convenient
in some cases), but being able...
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by: Timothy Fitz |
last post by:
It seems to me that in python, generators are not truly coroutines. I
do not understand why. What I see is that generators are used almost
exclusively for generation of lists just-in-time. Side effects are
frowned upon. Coroutines, in contrast, are like split functions where
side effects are often as important or more important than return
values. I am currently writing a real time strategy game where I have
visual effects and use...
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by: Carlos Ribeiro |
last post by:
As a side track of my latest investigations, I began to rely heavily
on generators for some stuff where I would previsouly use a more
conventional approach. Whenever I need to process a list, I'm tending
towards the use of generators. One good example is if I want to print
a report, or to work over a list with complex processing for each
item. In both cases, a simple list comprehension can't be used. The
conventional approach involves...
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by: Michael Sparks |
last post by:
Hi,
I'm posting a link to this since I hope it's of interest to people here :)
I've written up the talk I gave at ACCU Python UK on the Kamaelia Framework,
and it's been published as a BBC R&D White Paper and is available here:
* http://www.bbc.co.uk/rd/pubs/whp/whp113.shtml
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by: Talin |
last post by:
I've been using generators to implement backtracking search for a while
now. Unfortunately, my code is large and complex enough (doing
unification on math expressions) that its hard to post a simple
example. So I decided to look for a simpler problem that could be used
to demonstrate the technique that I am talking about.
I noticed that PEP 255 (Simple Generators) refers to an implementation
of the "8 Queens" problem in the lib/test...
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by: Joe |
last post by:
Sorry this is OT...
I'm looking for recommendations for generating license keys (machine
specific) for our application. I was looking at Quick Licenses Manager which
looks pretty good.
Is there any favorites?
-Joe
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by: Paul |
last post by:
Hi,
I have spent the last couple of days researching this issue. And I have
also spent time thinking about what is needed.
I am distributing my software as shareware. When a customer orders a
license, I send him/her a printed license with a license number that
can be used to unlock certain features in the software.
A license number should consist of up to 20 numbers and letters.
Upper/lower case letters should not matter and in order...
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by: Martin Sand Christensen |
last post by:
Hi!
First a bit of context.
Yesterday I spent a lot of time debugging the following method in a
rather slim database abstraction layer we've developed:
,----
| def selectColumn(self, table, column, where={}, order_by=, group_by=):
| """Performs a SQL select query returning a single column
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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