orjson | Fast correct Python JSON library supporting dataclasses | Serialization library

 by   ijl Python Version: 3.10.0 License: Apache-2.0

kandi X-RAY | orjson Summary

kandi X-RAY | orjson Summary

orjson is a Python library typically used in Utilities, Serialization applications. orjson has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can install using 'pip install orjson' or download it from GitHub, PyPI.

orjson is a fast, correct JSON library for Python. It benchmarks as the fastest Python library for JSON and is more correct than the standard json library or other third-party libraries. It serializes dataclass, datetime, numpy, and UUID instances natively.
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            kandi-support Support

              orjson has a medium active ecosystem.
              It has 4643 star(s) with 170 fork(s). There are 32 watchers for this library.
              There were 9 major release(s) in the last 6 months.
              There are 3 open issues and 314 have been closed. On average issues are closed in 10 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of orjson is 3.10.0

            kandi-Quality Quality

              orjson has 0 bugs and 0 code smells.

            kandi-Security Security

              orjson has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              orjson code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              orjson is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              orjson releases are available to install and integrate.
              Deployable package is available in PyPI.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              It has 4134 lines of code, 832 functions and 35 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed orjson and discovered the below as its top functions. This is intended to give you an instant insight into orjson implemented functionality, and help decide if they suit your requirements.
            • Test if the fixture is correct .
            • Reads a fixture file .
            • Evaluate the given fixture .
            • Test if data is empty .
            • Return a JSON response .
            • Read a fixture file .
            • Serialize an object to or JSON .
            • Serialize obj to ujson .
            • Serialize a rapid JSON object to a string .
            • Serializes obj to json .
            Get all kandi verified functions for this library.

            orjson Key Features

            No Key Features are available at this moment for orjson.

            orjson Examples and Code Snippets

            ormsgpack,Usage,Serialize
            Rustdot img1Lines of Code : 147dot img1License : Non-SPDX (NOASSERTION)
            copy iconCopy
            def packb(
                __obj: Any,
                default: Optional[Callable[[Any], Any]] = ...,
                option: Optional[int] = ...,
            ) -> bytes: ...
            
            >>> import ormsgpack, decimal
            >>>
            def default(obj):
                if isinstance(obj, decimal.Decimal):
                      
            Data
            Rustdot img2Lines of Code : 61dot img2License : Non-SPDX (NOASSERTION)
            copy iconCopy
            ----------------------------------------------------------------------------- benchmark 'canada packb': 2 tests ------------------------------------------------------------------------------
            Name (time in ms)                   Min                Max   
            ormsgpack,Types,numpy
            Rustdot img3Lines of Code : 45dot img3License : Non-SPDX (NOASSERTION)
            copy iconCopy
            >>> import ormsgpack, numpy
            >>> ormsgpack.packb(
                    numpy.array([[1, 2, 3], [4, 5, 6]]),
                    option=ormsgpack.OPT_SERIALIZE_NUMPY,
            )
            >>> ormsgpack.unpackb(_)
            [[1,2,3],[4,5,6]]
            
            -------------------------------------  

            Community Discussions

            QUESTION

            Error when running pip install -r requirements.txt
            Asked 2022-Mar-31 at 07:22

            to build and run a local instance, im following the tutorial at https://haha.readthedocs.io/en/latest/install.html but i use the git repo https://github.com/readthedocs/readthedocs.org.git instead of https://github.com/rtfd/readthedocs.org.git for the "git clone" command, as the link in the tutorial does not exist. i am also using venv, and not virtualenv, as i was not able to make virtualenv work.

            i then get to the step to run the following command

            ...

            ANSWER

            Answered 2022-Mar-31 at 07:21

            You are using python 3.10 which does not have a whl file available on PyPi for pywin32==227. Try the installation with a lower python version e.g. 3.9

            Source https://stackoverflow.com/questions/71687994

            QUESTION

            Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway
            Asked 2022-Mar-01 at 16:58

            I try to use library cv2 for changing picture. In mode debug I found out that problem in function cv2.namedWindow:

            ...

            ANSWER

            Answered 2021-Nov-07 at 00:17

            I reverted back to Xorg from wayland and its working, no more warnings

            Here are the steps:

            1. Disbled Wayland by uncommenting WaylandEnable=false in the /etc/gdm3/custom.conf
            2. Add QT_QPA_PLATFORM=xcb in /etc/environment
            3. Check whether you are on Wayland or Xorg using:

            Source https://stackoverflow.com/questions/69828508

            QUESTION

            Colab: (0) UNIMPLEMENTED: DNN library is not found
            Asked 2022-Feb-08 at 19:27

            I have pretrained model for object detection (Google Colab + TensorFlow) inside Google Colab and I run it two-three times per week for new images I have and everything was fine for the last year till this week. Now when I try to run model I have this message:

            ...

            ANSWER

            Answered 2022-Feb-07 at 09:19

            It happened the same to me last friday. I think it has something to do with Cuda instalation in Google Colab but I don't know exactly the reason

            Source https://stackoverflow.com/questions/71000120

            QUESTION

            Dash/Plotly - long_callback fails with celery/redis backend
            Asked 2021-Oct-21 at 04:03
            Summary

            I’ve been developing a dash app that uses a long_callback, and for development I’ve been using a diskcache backend for my long_callback_manager, as recommended by the guide I found here: https://dash.plotly.com/long-callbacks

            When I tried running my app using gunicorn, it failed to start because of something apparently wrong with diskcache. As such, I decided to switch to a celery/redis backend since that’s recommended for production anyway.

            I got a redis server running (responds properly to redis-cli ping with PONG), and then started the app again. This time it started up fine, and all of the normal callbacks work, but the long_callback does not work.

            Details:

            • The page more or less hangs, with the page title flashing between the normal title and the Updating... title, indicating that the app thinks it’s “waiting” for a response/update from the long_callback.
            • The values set by the running argument of the long_callback are set to their starting value, indicating that the app recognizes that the long_callback ought to run.
            • By placing a print statement as the first line within the long_callback function and seeing that it does not print, I’ve determined that the function never starts.
            • The failure happens both with gunicorn and without gunicorn.

            These details all point to the problem being the celery/redis backend. No errors are shown, neither on the client/browser nor on the server’s stdout/sterr.

            How do I get a celery/redis backend working?

            UPDATE: After realizing that the __name__ variable is being used and that its value changes depending on the file from which it is referenced, I've also tried moving the code which creates celery_app and LONG_CALLBACK_MANAGER into app.py, to no avail. The exact same thing happens.

            Code app.py ...

            ANSWER

            Answered 2021-Oct-21 at 04:03

            Re-posting the solution from the plotly community forum:
            https://community.plotly.com/t/long-callback-with-celery-redis-how-to-get-the-example-app-work/57663

            Summary

            In order for the long callback to work, I needed to start 3 separate processes that work in conjunction:

            1. the Redis server: redis-server
            2. the Celery app: celery -A app.celery worker --loglevel=INFO
            3. the Dash app: python app.py

            The commands listed above are the simplest version. The full commands used are given further down with appropriate modifications.

            Details

            I moved the declaration of the celery app from src/website/long_callback_manager.py to src/app.py for easier external access:

            Source https://stackoverflow.com/questions/69397679

            QUESTION

            Paho publishing stops after first topic on Docker
            Asked 2021-Sep-01 at 13:39

            My code publishes to a list of topics at a specific time. I run this locally and it sometimes doesnt react as it should. Once I dockerize it it only publishes to the first topic. Any help would be appreciated

            ...

            ANSWER

            Answered 2021-Sep-01 at 13:39

            You have not started the Paho's client network loop, without it won't send messages larger than the MTU of the network.

            You also appear to never shut the client down so it will leak clients every time it runs.

            Source https://stackoverflow.com/questions/68986230

            QUESTION

            Custom json serializer for JSON column in SQLAlchemy
            Asked 2021-Jul-12 at 17:21

            I have following ORM object (simplified):

            ...

            ANSWER

            Answered 2021-Jul-12 at 17:21

            Looks like you should be able to get what you want by modifying your create_engine statement.

            From the docstring in SQLAlchemy:

            Source https://stackoverflow.com/questions/68350236

            QUESTION

            Docker not recognizing asyncio_mqtt?
            Asked 2021-May-24 at 10:44

            I'm currently turning my code into docker images to control the lights based on a sensor. I'm quite a novice at this. It runs locally but when I turn it into an image with this dockerfile using docker build .:

            ...

            ANSWER

            Answered 2021-May-24 at 10:44

            @hardillb was right the error message had to do with an connection issue. The broker was never able to connect due to the fact that within docker it wasn't in the correct network within docker.

            Source https://stackoverflow.com/questions/67651673

            QUESTION

            How to package locust file with pyinstaller
            Asked 2021-Jan-12 at 09:26

            In virtual environment I installed locust. I want to create distributable package so any user can run load tests. I used pyinstaller. The exe file is created but when I run it nothing happens.

            ...

            ANSWER

            Answered 2021-Jan-10 at 07:06

            All depend on how are you expecting to get your test executed and what are your really packing. Locust have different ways of use. Assuming that you wanna pack your test file as an executable file you may need to include in your file a main entrypoint that use locust as a library

            If you are packing the locust itself and the virtualenv including your test file you may need to specify how to run locust as a command and pass your test file as a command line argument

            Source https://stackoverflow.com/questions/65637571

            QUESTION

            http request with parquet and pyarrow
            Asked 2020-Nov-24 at 17:40

            I would like to use pyarrow to read/query parquet data from a rest server. At the moment I'm chunking the data, converting to pandas, dumping to json, and streaming the chunks. Like:

            ...

            ANSWER

            Answered 2020-Nov-24 at 17:40

            You can send your data using the arrow in memory columnar format. It will be much more efficient and compact than json. but bear in mind it will be binary data (which unlike json is not human readable)

            See the doc for a full example.

            In your case you want to do something like this:

            Source https://stackoverflow.com/questions/64922615

            QUESTION

            How to set response class in FastAPI?
            Asked 2020-Oct-17 at 23:49

            Using orjson to serializing response has a remarkable effect on the speed of fastAPI restful services, specifically for very big objects. As I have read in the official documentation, we can use the response class directly as a parameter of api method. The problem is that when I use the ORJSONResponse directly as a function it works; however, it doesn't work when passing it into parameter esponse_class=ORJSONResponse.

            1. sample code with direct calling of ORJSONResponse():

            this code run in 75ms ,size 6.6 MB that shows orjson serialization works properly. It's faster than .net core and it is what I need.

            ...

            ANSWER

            Answered 2020-Oct-17 at 23:49

            Also, we have documentation for Returning a Response Directly.

            So you can use this, not a bad practice.

            Source https://stackoverflow.com/questions/64408092

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install orjson

            To install a wheel from PyPI:. To build a wheel, see packaging.
            This is an example of serializing, with options specified, and deserializing:.

            Support

            No. This requires a schema specifying what types are expected and how to handle errors etc. This is addressed by data validation libraries a level above this.
            Find more information at:

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            Install
          • PyPI

            pip install orjson

          • CLONE
          • HTTPS

            https://github.com/ijl/orjson.git

          • CLI

            gh repo clone ijl/orjson

          • sshUrl

            git@github.com:ijl/orjson.git

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