Python Slots
2021年7月5日Register here: http://gg.gg/v9kjb
*Python Slots
*Python Slots Class Attribute
*Python Slots Dataclass
*Python __slots__
*Python Slots Performance
*Python Slots Inheritance
Today, we’re going to discuss the Python/Qt way of allowing your application to respond to user-triggered events: signals and slots. When a user takes an action — clicking on a button, selecting a value in a combo box, typing in a text box — the widget in question emits a signal. This is from Python side. Did htslots field of PyHeapTypeObject does not contain properly calculated slot names? Looking at the code, it appears that htslots does.not. include inherited slots. Msg171902 - Author: Terry J. Reedy (terry.reedy). Date: 2012-10-03 19:02; As I understand it, var(ob) is pretty much a synonym for ob.dict. Python老鸟都应该看过那篇非常有吸引力的 Saving 9 GB of RAM with Python’s slots 文章，作者使用了slots让内存占用从25.5GB降到了16.2GB。在当时来说，这相当于用一个非常简单的方式就降低了30%的内存.Latest version
Released:
Library for communicating with Redis Clusters. Built on top of redis-py libProject description
This client provides a client for redis cluster that was added in redis 3.0.
This project is a port of redis-rb-cluster by antirez, with a lot of added functionality. The original source can be found at https://github.com/antirez/redis-rb-cluster
The branch master will always contain the latest unstable/development code that has been merged from Pull Requests. Use the latest commit from master branch on your own risk, there is no guarantees of compatibility or stability of non tagged commits on the master branch. Only tagged releases on the master branch is considered stable for use.
This library follows the announced change from our upstream package redis-py. Due to this,we will follow the same python 2.7 deprecation timeline as stated in there.
Mount Airy Casino The beautiful, 65,144-square-foot gaming floor offers over 1,800 of the hottest slots. Mount Airy Casino Resort offers a game for every type of. Slots, table games and 24/7 fun in the Poconos. At Mount Airy Casino Resort’s high-energy casino, every minute is a thrill. With over 70 table games, ranging from blackjack, craps, roulette and Baccarat, and over 1,800 of the hottest slots in Northern Pennsylvania, you have several chances to try your luck and get lucky. Resorts near Mount Airy Casino, Mount Pocono on Tripadvisor: Find 26,807 traveler reviews, 1,671 candid photos, and prices for resorts near Mount Airy Casino in Mount Pocono, PA. 1403 Pocono Blvd. Route 611, Mount Pocono, Pennsylvania. 570 839 7831. Contact Us WINTER HOURS: FRI 3-8pm SAT Noon-8pm SUN Noon-6pm MON-TUE-WED-THU CLOSED.
redis-py-cluster 2.1.x will be the last major version release that supports Python 2.7.The 2.1.x line will continue to get bug fixes and security patches thatsupport Python 2 until August 1, 2020. redis-py-cluster 3.0.x will be the next majorversion and will require Python 3.5+.
All documentation can be found at https://redis-py-cluster.readthedocs.io/en/master
This Readme contains a reduced version of the full documentation.
Upgrading instructions between each released version can be found here
Changelog for next release and all older releases can be found hereInstallation
Latest stable release from pypi
This major version of redis-py-cluster supports redis-py >=3.0.0, <4.0.0.Usage example
Small sample script that shows how to get started with RedisCluster. It can also be found in examples/basic.pyLicense & Authors
Copyright (c) 2013-2020 Johan Andersson
MIT (See docs/License.txt file)
The license should be the same as redis-py (https://github.com/andymccurdy/redis-py)2.1.0 (May **, 2020)2.0.0 (Aug 12, 2019)
Specific changes to redis-py-cluster is mentioned below here.1.3.6 (Nov 16, 2018)1.3.5 (July 22, 2018)1.3.4 (Mar 5, 2017)1.3.3 (Dec 15, 2016)1.3.2 (Nov 27, 2016)1.3.1 (Oct 13, 2016)1.3.0 (Sep 11, 2016)1.2.0 (Apr 09, 2016)1.1.0 (Oct 27, 2015)1.0.0 (Jun 10, 2015)0.3.0 (Jun 9, 2015)0.2.0 (Dec 26, 2014)0.1.0 (Sep 29, 2014)Release historyRelease notifications | RSS feed
2.1.0
2.0.99rc2 pre-release
2.0.0 Python Slots
1.3.6
1.3.5
1.3.4
1.3.3
1.3.2
1.3.1
1.3.0
1.2.0
1.1.0
1.0.0
0.3.0
0.2.0
0.1.0 Download files
Download the file for your platform. If you’re not sure which to choose, learn more about installing packages.Files for redis-py-cluster, version 2.1.0Filename, sizeFile typePython versionUpload dateHashesFilename, size redis_py_cluster-2.1.0-py2.py3-none-any.whl (41.6 kB) File type Wheel Python version py2.py3 Upload dateHashesFilename, size redis-py-cluster-2.1.0.tar.gz (40.5 kB) File type Source Python version None Upload dateHashesCloseHashes for redis_py_cluster-2.1.0-py2.py3-none-any.whl Hashes for redis_py_cluster-2.1.0-py2.py3-none-any.whlAlgorithmHash digestSHA25622aaa35c145c7a278fea593e94916b6fdf377e49c0af0508d89112f3e79aab06MD549bf0ee2f9008e1560f0012bfc76017aBLAKE2-2562bc53236720746fa357e214f2b9fe7e517642329f13094fc7eb339abd93d004fCloseHashes for redis-py-cluster-2.1.0.tar.gz Hashes for redis-py-cluster-2.1.0.tar.gzAlgorithmHash digestSHA256ded8b0ab213a0629ba47ac22fa5e8f1800766fd36e5588f162474519f0d74152MD5654deadaaebd87540fdc6deafead9a42BLAKE2-2564efcca4935af7da1d879547c4783c2c403d1d33e31ae1e400be44eb6317d2f3fIntroduction
In some applications it is often necessary to perform long-running tasks, such as computations or network operations, that cannot be broken up into smaller pieces and processed alongside normal application events. In such cases, we would like to be able to perform these tasks in a way that does not interfere with the normal running of the application, and ensure that the user interface continues to be updated. One way of achieving this is to perform these tasks in a separate thread to the main user interface thread, and only interact with it when we have results we need to display.
This example shows how to create a separate thread to perform a task - in this case, drawing stars for a picture - while continuing to run the main user interface thread. The worker thread draws each star onto its own individual image, and it passes each image back to the example’s window which resides in the main application thread. The User InterfacePython Slots Class Attribute
We begin by importing the modules we require. We need the math and random modules to help us draw stars.
The main window in this example is just a QWidget. We create a single Worker instance that we can reuse as required.
The user interface consists of a label, spin box and a push button that the user interacts with to configure the number of stars that the thread wil draw. The output from the thread is presented in a QLabel instance, viewer.
We connect the standard finished() and terminated() signals from the thread to the same slot in the widget. This will reset the user interface when the thread stops running. The custom output(QRect, QImage) signal is connected to the addImage() slot so that we can update the viewer label every time a new star is drawn.
The start button’s clicked() signal is connected to the makePicture() slot, which is responsible for starting the worker thread.
We place each of the widgets into a grid layout and set the window’s title:
The makePicture() slot needs to do three things: disable the user interface widgets that are used to start a thread, clear the viewer label with a new pixmap, and start the thread with the appropriate parameters.
Since the start button is the only widget that can cause this slot to be invoked, we simply disable it before starting the thread, avoiding problems with re-entrancy.
We call a custom method in the Worker thread instance with the size of the viewer label and the number of stars, obtained from the spin box.
Whenever is star is drawn by the worker thread, it will emit a signal that is connected to the addImage() slot. This slot is called with a QRect value, indicating where the star should be placed in the pixmap held by the viewer label, and an image of the star itself:
We use a QPainter to draw the image at the appropriate place on the label’s pixmap.
The updateUi() slot is called when a thread stops running. Since we usually want to let the user run the thread again, we reset the user interface to enable the start button to be pressed:
Now that we have seen how an instance of the Window class uses the worker thread, let us take a look at the thread’s implementation. The Worker Thread
The worker thread is implemented as a PyQt thread rather than a Python thread since we want to take advantage of the signals and slots mechanism to communicate with the main application.
We define size and stars attributes that store information about the work the thread is required to do, and we assign default values to them. The exiting attribute is used to tell the thread to stop processing.
Each star is drawn using a QPainterPath that we define in advance:
Before a Worker object is destroyed, we need to ensure that it stops processing. For this reason, we implement the following method in a way that indicates to the part of the object that performs the processing that it must stop, and waits until it does so.
For convenience, we define a method to set up the attributes required by the thread before starting it.
The start() method is a special method that sets up the thread and calls our implementation of the run() method. We provide the render() method instead of letting our own run() method take extra arguments because the run() method is called by PyQt itself with no arguments. Python Slots Dataclass
The run() method is where we perform the processing that occurs in the thread provided by the Worker instance:
Information stored as attributes in the instance determines the number of stars to be drawn and the area over which they will be distributed.
We draw the number of stars requested as long as the exiting attribute remains False. This additional check allows us to terminate the thread on demand by setting the exiting attribute to True at any time.
The drawing code is not particularly relevant to this example. We simply draw on an appropriately-sized transparent image. Python __slots__
For each star drawn, we send the main thread information about where it should be placed along with the star’s image by emitting our custom output() signal:
Since QRect and QImage objects can be serialized for transmission via the signals and slots mechanism, they can be sent between threads in this way, making it convenient to use threads in a wide range of situations where built-in types are used. Python Slots PerformanceRunning the ExamplePython Slots Inheritance
We only need one more piece of code to complete the example:
Register here: http://gg.gg/v9kjb
https://diarynote.indered.space
*Python Slots
*Python Slots Class Attribute
*Python Slots Dataclass
*Python __slots__
*Python Slots Performance
*Python Slots Inheritance
Today, we’re going to discuss the Python/Qt way of allowing your application to respond to user-triggered events: signals and slots. When a user takes an action — clicking on a button, selecting a value in a combo box, typing in a text box — the widget in question emits a signal. This is from Python side. Did htslots field of PyHeapTypeObject does not contain properly calculated slot names? Looking at the code, it appears that htslots does.not. include inherited slots. Msg171902 - Author: Terry J. Reedy (terry.reedy). Date: 2012-10-03 19:02; As I understand it, var(ob) is pretty much a synonym for ob.dict. Python老鸟都应该看过那篇非常有吸引力的 Saving 9 GB of RAM with Python’s slots 文章，作者使用了slots让内存占用从25.5GB降到了16.2GB。在当时来说，这相当于用一个非常简单的方式就降低了30%的内存.Latest version
Released:
Library for communicating with Redis Clusters. Built on top of redis-py libProject description
This client provides a client for redis cluster that was added in redis 3.0.
This project is a port of redis-rb-cluster by antirez, with a lot of added functionality. The original source can be found at https://github.com/antirez/redis-rb-cluster
The branch master will always contain the latest unstable/development code that has been merged from Pull Requests. Use the latest commit from master branch on your own risk, there is no guarantees of compatibility or stability of non tagged commits on the master branch. Only tagged releases on the master branch is considered stable for use.
This library follows the announced change from our upstream package redis-py. Due to this,we will follow the same python 2.7 deprecation timeline as stated in there.
Mount Airy Casino The beautiful, 65,144-square-foot gaming floor offers over 1,800 of the hottest slots. Mount Airy Casino Resort offers a game for every type of. Slots, table games and 24/7 fun in the Poconos. At Mount Airy Casino Resort’s high-energy casino, every minute is a thrill. With over 70 table games, ranging from blackjack, craps, roulette and Baccarat, and over 1,800 of the hottest slots in Northern Pennsylvania, you have several chances to try your luck and get lucky. Resorts near Mount Airy Casino, Mount Pocono on Tripadvisor: Find 26,807 traveler reviews, 1,671 candid photos, and prices for resorts near Mount Airy Casino in Mount Pocono, PA. 1403 Pocono Blvd. Route 611, Mount Pocono, Pennsylvania. 570 839 7831. Contact Us WINTER HOURS: FRI 3-8pm SAT Noon-8pm SUN Noon-6pm MON-TUE-WED-THU CLOSED.
redis-py-cluster 2.1.x will be the last major version release that supports Python 2.7.The 2.1.x line will continue to get bug fixes and security patches thatsupport Python 2 until August 1, 2020. redis-py-cluster 3.0.x will be the next majorversion and will require Python 3.5+.
All documentation can be found at https://redis-py-cluster.readthedocs.io/en/master
This Readme contains a reduced version of the full documentation.
Upgrading instructions between each released version can be found here
Changelog for next release and all older releases can be found hereInstallation
Latest stable release from pypi
This major version of redis-py-cluster supports redis-py >=3.0.0, <4.0.0.Usage example
Small sample script that shows how to get started with RedisCluster. It can also be found in examples/basic.pyLicense & Authors
Copyright (c) 2013-2020 Johan Andersson
MIT (See docs/License.txt file)
The license should be the same as redis-py (https://github.com/andymccurdy/redis-py)2.1.0 (May **, 2020)2.0.0 (Aug 12, 2019)
Specific changes to redis-py-cluster is mentioned below here.1.3.6 (Nov 16, 2018)1.3.5 (July 22, 2018)1.3.4 (Mar 5, 2017)1.3.3 (Dec 15, 2016)1.3.2 (Nov 27, 2016)1.3.1 (Oct 13, 2016)1.3.0 (Sep 11, 2016)1.2.0 (Apr 09, 2016)1.1.0 (Oct 27, 2015)1.0.0 (Jun 10, 2015)0.3.0 (Jun 9, 2015)0.2.0 (Dec 26, 2014)0.1.0 (Sep 29, 2014)Release historyRelease notifications | RSS feed
2.1.0
2.0.99rc2 pre-release
2.0.0 Python Slots
1.3.6
1.3.5
1.3.4
1.3.3
1.3.2
1.3.1
1.3.0
1.2.0
1.1.0
1.0.0
0.3.0
0.2.0
0.1.0 Download files
Download the file for your platform. If you’re not sure which to choose, learn more about installing packages.Files for redis-py-cluster, version 2.1.0Filename, sizeFile typePython versionUpload dateHashesFilename, size redis_py_cluster-2.1.0-py2.py3-none-any.whl (41.6 kB) File type Wheel Python version py2.py3 Upload dateHashesFilename, size redis-py-cluster-2.1.0.tar.gz (40.5 kB) File type Source Python version None Upload dateHashesCloseHashes for redis_py_cluster-2.1.0-py2.py3-none-any.whl Hashes for redis_py_cluster-2.1.0-py2.py3-none-any.whlAlgorithmHash digestSHA25622aaa35c145c7a278fea593e94916b6fdf377e49c0af0508d89112f3e79aab06MD549bf0ee2f9008e1560f0012bfc76017aBLAKE2-2562bc53236720746fa357e214f2b9fe7e517642329f13094fc7eb339abd93d004fCloseHashes for redis-py-cluster-2.1.0.tar.gz Hashes for redis-py-cluster-2.1.0.tar.gzAlgorithmHash digestSHA256ded8b0ab213a0629ba47ac22fa5e8f1800766fd36e5588f162474519f0d74152MD5654deadaaebd87540fdc6deafead9a42BLAKE2-2564efcca4935af7da1d879547c4783c2c403d1d33e31ae1e400be44eb6317d2f3fIntroduction
In some applications it is often necessary to perform long-running tasks, such as computations or network operations, that cannot be broken up into smaller pieces and processed alongside normal application events. In such cases, we would like to be able to perform these tasks in a way that does not interfere with the normal running of the application, and ensure that the user interface continues to be updated. One way of achieving this is to perform these tasks in a separate thread to the main user interface thread, and only interact with it when we have results we need to display.
This example shows how to create a separate thread to perform a task - in this case, drawing stars for a picture - while continuing to run the main user interface thread. The worker thread draws each star onto its own individual image, and it passes each image back to the example’s window which resides in the main application thread. The User InterfacePython Slots Class Attribute
We begin by importing the modules we require. We need the math and random modules to help us draw stars.
The main window in this example is just a QWidget. We create a single Worker instance that we can reuse as required.
The user interface consists of a label, spin box and a push button that the user interacts with to configure the number of stars that the thread wil draw. The output from the thread is presented in a QLabel instance, viewer.
We connect the standard finished() and terminated() signals from the thread to the same slot in the widget. This will reset the user interface when the thread stops running. The custom output(QRect, QImage) signal is connected to the addImage() slot so that we can update the viewer label every time a new star is drawn.
The start button’s clicked() signal is connected to the makePicture() slot, which is responsible for starting the worker thread.
We place each of the widgets into a grid layout and set the window’s title:
The makePicture() slot needs to do three things: disable the user interface widgets that are used to start a thread, clear the viewer label with a new pixmap, and start the thread with the appropriate parameters.
Since the start button is the only widget that can cause this slot to be invoked, we simply disable it before starting the thread, avoiding problems with re-entrancy.
We call a custom method in the Worker thread instance with the size of the viewer label and the number of stars, obtained from the spin box.
Whenever is star is drawn by the worker thread, it will emit a signal that is connected to the addImage() slot. This slot is called with a QRect value, indicating where the star should be placed in the pixmap held by the viewer label, and an image of the star itself:
We use a QPainter to draw the image at the appropriate place on the label’s pixmap.
The updateUi() slot is called when a thread stops running. Since we usually want to let the user run the thread again, we reset the user interface to enable the start button to be pressed:
Now that we have seen how an instance of the Window class uses the worker thread, let us take a look at the thread’s implementation. The Worker Thread
The worker thread is implemented as a PyQt thread rather than a Python thread since we want to take advantage of the signals and slots mechanism to communicate with the main application.
We define size and stars attributes that store information about the work the thread is required to do, and we assign default values to them. The exiting attribute is used to tell the thread to stop processing.
Each star is drawn using a QPainterPath that we define in advance:
Before a Worker object is destroyed, we need to ensure that it stops processing. For this reason, we implement the following method in a way that indicates to the part of the object that performs the processing that it must stop, and waits until it does so.
For convenience, we define a method to set up the attributes required by the thread before starting it.
The start() method is a special method that sets up the thread and calls our implementation of the run() method. We provide the render() method instead of letting our own run() method take extra arguments because the run() method is called by PyQt itself with no arguments. Python Slots Dataclass
The run() method is where we perform the processing that occurs in the thread provided by the Worker instance:
Information stored as attributes in the instance determines the number of stars to be drawn and the area over which they will be distributed.
We draw the number of stars requested as long as the exiting attribute remains False. This additional check allows us to terminate the thread on demand by setting the exiting attribute to True at any time.
The drawing code is not particularly relevant to this example. We simply draw on an appropriately-sized transparent image. Python __slots__
For each star drawn, we send the main thread information about where it should be placed along with the star’s image by emitting our custom output() signal:
Since QRect and QImage objects can be serialized for transmission via the signals and slots mechanism, they can be sent between threads in this way, making it convenient to use threads in a wide range of situations where built-in types are used. Python Slots PerformanceRunning the ExamplePython Slots Inheritance
We only need one more piece of code to complete the example:
Register here: http://gg.gg/v9kjb
https://diarynote.indered.space
コメント