kv | Simple key-value store backed by sqlite | Database library
kandi X-RAY | kv Summary
kandi X-RAY | kv Summary
Simple key-value store backed by sqlite
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Top functions reviewed by kandi - BETA
- Command - line entry point .
- Context manager to acquire a transaction .
- Return a value from the table .
- Set the value of the key .
- Initialize the database .
- Remove a key from the table .
kv Key Features
kv Examples and Code Snippets
Lines of Code : 38License : Strong Copyleft (CC BY-SA 4.0)
Copyclass MainApp(App):
def build(self):
# if you use ScreenManager you should return it in build function
self.sm = ScreenManager()
# creating the objects of screen classes
self.homescreen = HomeScreen()
from kivy.properties import ObjectProperty
from Kivy.clock import Clock
...
class Therdwindow(Screen):
first_Value = ObjectProperty(None)
def getvalue(self):
return self.first_Value
class Fourwindow(Screen):
seconclass Account(Screen):
coord = StringProperty('')
def __init__(self, acc, **kwargs)
super(Account, self).__init__(**kwargs)
self.coord = somedict[acc]["coordinate_x"]
...
for i in range(2):
screenmanager.add_Yes it is! You can import .kv files inside files just like normal python files by starting with:
#:include otherfile.kv
If you want the file to unload and reload first you can force the import typing
#:include force otherfile.kv
instead.import sqlite3, time
conn = sqlite3.connect('test.db')
conn.execute("CREATE TABLE IF NOT EXISTS kv (key text unique, value text)")
for i in range(1000):
conn.execute('REPLACE INTO kv (key, value) VALUES (?,?)', (1, i))
conn.commitCommunity Discussions
Trending Discussions on kv
QUESTION
Is it possible to use CloudFlare's Workers KV when developing a Svelte/kit application?
It is possible to build the app then run wrangler dev when using the CloudFlare Workers adapter:
ANSWER
Answered 2022-Mar-23 at 16:32As far as I know, there's no way to emulate Workers KV locally. However, I setup a local Redis instance as a substitute.
Then, I created some wrapper functions for the KV store. In development, it talks to Redis, and in production it talks to Workers KV. For instance, here's the wrapper function for get.
QUESTION
I'm having some trouble with some code I wrote that appears to work on the desktop, but when copied to my raspberry pi/touchscreen, I get a purely blank screen. Rpi has kivy installed. Kivy demos work just fine on both systems. Is there a chance there is something with import Window on kivy? Any advice would be greatly appreciated!
EDIT 1: I read online of someone else with a similar issue, needed to add (from kivy.lang.builder import Builder) and (Builder.load_file.py). I added this in the python code, which is letting me see most of the original program. Some of Kivy is showing, though for some reason- the graphic menu.png is missing and so is the textbox/grid layout at the bottom of the page (bottom of the kivy code below). This may be due to my positioning, so I will look into this.
Edit 2: This should be resolved- it was implementing Builder to the python code (correct version seen below). I also discovered- the raspberry pi might have an issue with images named 'menu.png'... Just changed the name of the image and everything was visible. No idea on that one. Thanks for the assistance.
Python Code:
...ANSWER
Answered 2022-Mar-23 at 03:26Had the same issue. Solved it by increasing the memory dedicated to the GPU on the Raspberry Pi.
Edit your /boot/config.txt file (sudo required)
Scroll down to the [all] section, and edit the gpu_mem line as follows:
gpu_mem=256
Then reboot your pi.
QUESTION
Got this simple loop:
...ANSWER
Answered 2022-Mar-14 at 08:07rewritten (IMHO,
foris more suitable thanmap, if a variable is changed)
QUESTION
Is there any way to disable the history saving in etcd?
I am going to use etcd as KV for my app and I don't need history for the key values.
When I search etcd, I couldn't find about disabling the history.
I don't want to use the compacting feature in etcd.
...ANSWER
Answered 2022-Mar-08 at 07:30Event history is part of etcd.
It was acknowledged, as far back as 2015 in issue 4432 ("Consider moving events out of etcd") that:
Events account for the overwhelming majority of our etcd write volume, which is causing a variety of performance and stability problems.
We could consider a different delivery mechanism for the events.
But for now, this is still managed by etcd.
There are other Key-Value referential which might prove simpler to manage than etcd in your case. I use prologic/bitcask.
QUESTION
So, I'm working on a simple kivy app and I have three buttons (MDRaisedButton's) which each open the same KivyMD Menu (MDDropdownMenu) on release.
Two of these buttons are in different
ScreenManagerscreens.The other button is in a
GridLayoutin theScreenoutside theScreenManager.
When I open the menu using the buttons inside of the ScreenManager, the menu appears at the button that is outside of the ScreenManager, no matter which button I press.
So how can I change the caller, or the position of the menu when it appears to be that of the buttons in my ScreenManager screens?
Me clicking on the button inside the ScreenManager screen:
The menu appears on the wrong button:
Code:
...ANSWER
Answered 2022-Feb-21 at 18:49Look at the following line in your code for the MDRaisedButton on_release event handler.
QUESTION
I have a list with this type: [(a, [a])].
For example:
ANSWER
Answered 2022-Feb-17 at 11:10You can make a recursive function that filters the rest of the list with the items in the second item of the 2-tuples, so:
QUESTION
I'm using the SG14 flat_map as a container.
As per a standard map, it takes Key and Value template parameters.
Unlike a standard map, however, it doesn't store std::pair in a binary search tree, but rather stores the keys and values in two separate containers (additional template arguments which default to std::vector)
ANSWER
Answered 2022-Feb-16 at 16:17Why does the combination of
constrange andconst auto&lambda argument fail to compile, while pasing a mutable range works and taking the lambda argument by value works?
First, the operator*() of the iterator of flat_map is defined as follows:
QUESTION
I've a weird error using a simple notification testing app using android.
The error:
...ANSWER
Answered 2021-Sep-23 at 22:08I had the same problem and found the problem and a workaround, not the solution though:
The problem lies within the Drawable Object created in the file plyer/platforms/android/notification.py. If you print(dir(Drawable)), you will find no attibute icon (as the error message stated). I don't know why the icon attribute is missing, but you will find there is a presplash attribute instead (which is also a .png file and thus replaceable).
By changing line 100 in the notification.py from app_icon = Drawable.icon to app_icon = Drawable.presplash, I could dodge the error and my app worked perfectly well. You need to change the line in the correct file though, which is located at ProjectName/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/projectname/plyer/platforms/android.
QUESTION
I am following this tutorial on migrating data from an oracle database to a Cloud SQL PostreSQL instance.
I am using the Google Provided Streaming Template Datastream to PostgreSQL
At a high level this is what is expected:
- Datastream exports in Avro format backfill and changed data into the specified Cloud Bucket location from the source Oracle database
- This triggers the Dataflow job to pickup the Avro files from this cloud storage location and insert into PostgreSQL instance.
When the Avro files are uploaded into the Cloud Storage location, the job is indeed triggered but when I check the target PostgreSQL database the required data has not been populated.
When I check the job logs and worker logs, there are no error logs. When the job is triggered these are the logs that logged:
...ANSWER
Answered 2022-Jan-26 at 19:14This answer is accurate as of 19th January 2022.
Upon manual debug of this dataflow, I found that the issue is due to the dataflow job is looking for a schema with the exact same name as the value passed for the parameter databaseName and there was no other input parameter for the job using which we could pass a schema name. Therefore for this job to work, the tables will have to be created/imported into a schema with the same name as the database.
However, as @Iñigo González said this dataflow is currently in Beta and seems to have some bugs as I ran into another issue as soon as this was resolved which required me having to change the source code of the dataflow template job itself and build a custom docker image for it.
QUESTION
I'm making a kivy app to find the rhyming words for a word entered by the user. It displays all the rhyming words as OneLineListItems in an MDList which is inside a kivy RecycleView. On clicking on one of these OneLineListItems it displays the definition of the word on the right-hand side of the screen. However, when I click on a OneLineListItem its definition takes very long to appear and sometimes it lags so badly that the app closes. Am I doing something wrong or is it just my computer? Code below:
ANSWER
Answered 2022-Jan-25 at 08:32First create a custom class for the data-class like following:
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No vulnerabilities reported
Install kv
You can use kv like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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