cattrs | Complex custom class converters for attrs | Serialization library

 by   Tinche Python Version: Current License: MIT

kandi X-RAY | cattrs Summary

kandi X-RAY | cattrs Summary

cattrs is a Python library typically used in Utilities, Serialization applications. cattrs has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However cattrs build file is not available. You can install using 'pip install cattrs' or download it from GitHub, PyPI.

Complex custom class converters for attrs.
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            kandi-support Support

              cattrs has a low active ecosystem.
              It has 306 star(s) with 57 fork(s). There are 13 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 36 open issues and 69 have been closed. On average issues are closed in 222 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of cattrs is current.

            kandi-Quality Quality

              cattrs has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              cattrs is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              cattrs releases are not available. You will need to build from source code and install.
              Deployable package is available in PyPI.
              cattrs has no build file. You will be need to create the build yourself to build the component from source.
              cattrs saves you 1200 person hours of effort in developing the same functionality from scratch.
              It has 5795 lines of code, 397 functions and 61 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

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            cattrs Key Features

            No Key Features are available at this moment for cattrs.

            cattrs Examples and Code Snippets

            No Code Snippets are available at this moment for cattrs.

            Community Discussions

            QUESTION

            ModuleNotFoundError: No module named 'airflow.providers.slack' Airflow 2.0 (MWAA)
            Asked 2022-Apr-10 at 04:33

            I am using Airflow 2.0 and have installed the slack module through requirements.txt in MWAA. I have installed all the below packages, but still, it says package not found

            ...

            ANSWER

            Answered 2022-Apr-10 at 04:33

            By default, MWAA is constrained to using version 3.0.0 for the package apache-airflow-providers-slack. If you specify version 4.2.3 in requirements.txt, it will not be installed (error logs should be available in CloudWatch). You'll have to downgrade to version 3.0.0.

            apache-airflow-providers-slack (constraints.txt)

            OR

            Add constraints file to the top of requirements.txt to use version 4.2.3 of apache-airflow-providers-slack.

            Add the constraints file for your Apache Airflow v2 environment to the top of your requirements.txt file.

            Source https://stackoverflow.com/questions/71801641

            QUESTION

            Spring integration amqp adding headers repetitively
            Asked 2022-Feb-28 at 10:11

            We have been using spring integration core and spring integration amqp along with rabbitm-mq for a long time now. Our services also used dead lettering mechanism by using x-death header and amaqp-expiration header It used to work fine until now when we decied to upgrade the version of spring-integration .

            Prior version : 5.0.6.RELEASE

            New version : 5.2.4.RELEASE

            Rabbit mq headers in previous version

            ...

            ANSWER

            Answered 2022-Feb-22 at 17:18

            You can configure to map only those headers you are interested in. By default it maps all:

            Source https://stackoverflow.com/questions/71153358

            QUESTION

            AWS CDK Python - SubnetSelection and ISubnet objects
            Asked 2022-Feb-04 at 00:58
            Background

            I am attempting to create an EKS Cluster with the Cluster object in Python using the AWS CDK.

            I have a Stack that constructs networking objects such as VPCs and Subnets. That Stack is defining three "types" of subnets:

            1. A control subnet group - contains EKS ENIs
            2. A worker subnet group - contains Worker node groups
            3. A public subnet group - uses public route tables and will be responsible for ALBs, etc.

            The code defining that information is below. This is coming from my Networking Stack:

            ...

            ANSWER

            Answered 2022-Feb-03 at 14:58

            The following woks fine and is not the cause of the issue:

            Source https://stackoverflow.com/questions/70933730

            QUESTION

            Python attrs/cattrs serializing a dict using frozen attrs classes as the dict keys
            Asked 2021-Nov-12 at 11:18

            I would like to structure and unstructure an attrs object, which includes dict fields that use simple frozen attrs for the dict keys. This works very well for objects created at runtime, but the frozen attribute fails to make un/structuring with cattrs easy.

            This is a simple example of the problem:

            ...

            ANSWER

            Answered 2021-Nov-11 at 23:37

            Well, you can always use marshmallow for stuff like this. It allows you to fully customize the process via schemas. It is usually a good idea to keep your serialization/deserialization separate from your business logic anyway. So, for your example it could look something like this:

            Source https://stackoverflow.com/questions/69935643

            QUESTION

            Package built by Poetry is missing runtime dependencies
            Asked 2021-Nov-04 at 02:15

            I've been working on a project which so far has just involved building some cloud infrastructure, and now I'm trying to add a CLI to simplify running some AWS Lambdas. Unfortunately both the sdist and wheel packages built using poetry build don't seem to include the dependencies, so I have to manually pip install all of them to run the command. Basically I

            1. run poetry build in the project,
            2. cd "$(mktemp --directory)",
            3. python -m venv .venv,
            4. . .venv/bin/activate,
            5. pip install /path/to/result/of/poetry/build/above, and then
            6. run the new .venv/bin/ executable.

            At this point the executable fails, because pip did not install any of the package dependencies. If I pip show PACKAGE the Requires line is empty.

            The Poetry manual doesn't seem to specify how to link dependencies to the built package, so what do I have to do instead?

            I am using some optional dependencies, could that be interfering with the build process? To be clear, even non-optional dependencies do not show up in the package dependencies.

            pyproject.toml:

            ...

            ANSWER

            Answered 2021-Nov-04 at 02:15

            This appears to be a bug in Poetry. Or at least it's not clear from the documentation what the expected behavior would be in a case such as yours.

            In your pyproject.toml, you specify two dependencies as required in this section:

            Source https://stackoverflow.com/questions/69763090

            QUESTION

            Structure JSON to an `attrs` class with extra fields using `cattrs`?
            Asked 2021-Nov-01 at 17:08

            I would like to structure JSON to an attrs class that allows for extra fields using cattrs. cattrs by default will ignore extra fields and if forbid_extra_keys=True an error is raised when extra fields are passed.

            I would like to do kind of the opposite: change the default behavior by allowing extra fields. I created an attrs class to do so but I'm a bit unsure on how to proceed with the custom cattrs converter. Here's what I have so far:

            ...

            ANSWER

            Answered 2021-Nov-01 at 17:08

            What you're trying to do is a little inadvised; the entire point of attrs classes is for all the fields to be enumerated in advance. If you stick arbitrary attributes on instances, you have to use non-slot classes, your helper functions like __repr__ and __eq__ won't work properly (the extra attributes will be ignored), and as you correctly concluded cattrs cannot help you with type conversions (since it has nowhere to actually find the types).

            That said, I have rewritten your example to move the logic from the class into a converter, which I find more elegant.

            Source https://stackoverflow.com/questions/69781176

            QUESTION

            PythonVirtualenvOperator using airflow module fails to execute with AttributeError: module 'airflow' has no attribute 'utils'
            Asked 2021-Apr-19 at 16:33

            I have Airflow deployed in virtual env and in case I try to execute PythonVirtualenvOperator with import of the Airflow module (to get Variables for example) it gives me the AttributeError. Guess I do not fully understand how Airflow executes VirtualenvOperator, and therefore what to do to overcome it, so any suggestions and insights will be highly appreciated

            My test DAG code

            ...

            ANSWER

            Answered 2021-Apr-19 at 16:29

            It seems that you are confusing the use-cases for PythonVirtualenvOperator and PythonOperator.

            If you simply want to run a Python callable in a task (callable_virtualenv() in your case) you can use PythonOperator. In this case, it does not matter if you installed Airflow in a virtual environment, system wide, or using Docker.

            What happens in your code is the following: PythonVirtualenvOperator creates another virtual environment (which is completely unrelated to the one in which you run Airflow), installs Airflow into it, and tries to import Variable. But this another Airflow installation is not configured and that is why you get those exceptions. You could set the AIRFLOW_HOME environment variable for this second Airflow installation to the same directory as used by the first Airflow installation, and this should actually work, but it looks like an overkill to me.

            So, what you can do is install colorama into the same environment in which you installed Airflow and replace PythonVirtualenvOperator by PythonOperator.

            BTW, those print() inside the callable would be redirected into a log file and not printed to terminal, so it probably does not make much sense to use colorama with them.

            Source https://stackoverflow.com/questions/67165003

            QUESTION

            Error installing apache-airflow: "Could not build wheels for setproctitle which use PEP 517 and cannot be installed directly"
            Asked 2021-Mar-04 at 00:26

            I'm trying to find some help installing apache-airflow.

            I am on MacOS 10.15.7, Python version 3.8.2, and I keep getting an error:

            ERROR: Could not build wheels for setproctitle which use PEP 517 and cannot be installed directly

            I have tried using earlier versions of pip and python to no avail.

            Does anyone know what I can do in this situation? I have looked at all the stack overflow questions that popped up with these search terms but none have presented a solution that worked for me so far.

            Any help would be much appreciated.

            ...

            ANSWER

            Answered 2021-Mar-04 at 00:26

            I am on MacOS 10.15.7 Python version 3.8.2

            I'm guessing you used the Python 3 bundled/pre-installed with macOS Catalina.

            Source https://stackoverflow.com/questions/66430674

            QUESTION

            Running cdk synth on Azure devops pipeline gives ImportError: No module named aws_cdk
            Asked 2020-Sep-17 at 06:39

            I am having below pipeline in azure devops. I have tested the cdk project on local and it works fine. When I run the same on azure devops, it gives an error.

            pipeline

            ...

            ANSWER

            Answered 2020-Sep-17 at 06:39

            Check your cdk.json file, try using python3 app.py instead of python app.py, :

            Source https://stackoverflow.com/questions/63917087

            QUESTION

            Getting Errors while installing airflow using pip install apache-airflow in macOS Catalina
            Asked 2020-Apr-11 at 02:37

            I am steering my learning wheel towards airflow during this weekend and while setting up and installing airflow at local machine using pip install apache-airflow, I'm getting following errors:

            ...

            ANSWER

            Answered 2020-Apr-11 at 02:37

            Your issue is typically related to Xcode toolkit.

            Type this command in your terminal

            Source https://stackoverflow.com/questions/61144324

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

            Vulnerabilities

            No vulnerabilities reported

            Install cattrs

            You can install using 'pip install cattrs' or download it from GitHub, PyPI.
            You can use cattrs 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.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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