SQLAlchemy
psycopg2
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SQLAlchemy | psycopg2 | |
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122 | 19 | |
8,611 | 3,189 | |
3.2% | 1.8% | |
9.8 | 7.2 | |
4 days ago | 18 days ago | |
Python | C | |
MIT License | GNU General Public License v3.0 or later |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
SQLAlchemy
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Introducing Flama for Robust Machine Learning APIs
Besides, flama also provides support for SQL databases via SQLAlchemy, an SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL. Finally, flama also provides support for HTTP clients to perform requests via httpx, a next generation HTTP client for Python.
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Unlocking efficient authZ with Cerbos’ Query Plan
To simplify this process, Cerbos developers have come up with adapters for popular Object-Relational Mapping (ORM) frameworks. You can check out for more details on the query plan repo - which also contains adapters for Prisma and SQLAlchemy - as well as a fully functioning application using Mongoose as its ORM.
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Python: Just Write SQL
That above pattern is one I've seen people do even recently, using the "select().c" attribute which from very early versions of SQLAlchemy is defined as "the columns from a subquery of the SELECT" ; this usage began raising deprecation warnings in 1.4 and is fully removed in 2.0 as it was a remnant of a much earlier version of SQLAlchemy. it will do exactly as you say, "make a subquery for each filter condition".
the moment you see SQLAlchemy doing something you see that seems "asinine", send an example to https://github.com/sqlalchemy/sqlalchemy/discussions and I will clarify what's going on, correct the usage so that the query you have is what you expect, and quite often we will add new warnings or documentation when we see people doing things we didn't anticipate.
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A steering council note about making the global
The creator and lead maintainer of SQLAlchemy, one of the most popular and most used Python library for accessing databases (who doesn't?) gave a rather interesting response to PEP703.
If this doesn't ring any alarm bells I don't know what will.
> Basically for the moment the GIL-less idea would likely be burdensome for us and the fact that it's only an "option" seems to strongly imply major compatibility issues that we would not prefer.
https://github.com/sqlalchemy/sqlalchemy/discussions/10002#d...
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More public SQL-queryable databases?
Recently I discovered BigQuery public datasets - just over 200 datasets available for directly querying via SQL. I think this is a great thing! I can connect these direct to an analytics platform (we use Apache Superset which uses Python SQLAlchemy under the hood) for example and just start dashboarding.
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Day 46-47: Beginner FastAPI Series - Part 3
Our tool we're going to be using for interfacing with the SQLite database is SQLAlchemy, a SQL toolkit that provides a unified API for various relational databases. If you installed FastAPI with pip install "fastapi[all]", SQLAlchemy is already part of your setup. but if you opted for FastAPI alone, you would need to install SQLAlchemy separately with pip install sqlalchemy.
- Is there a Python module that can store data between runs?
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Starlite updates March '22 | 2.0 is coming
This feature is yet to be released, but it will allow you to seamlessly use data modelled with for example Pydantic, SQLAlchemy, msgspec or dataclasses in your route handlers, without the need for an intermediary model; The conversion will be handled by the specific DTO "backend" implementation. This new paradigm also makes it trivial to add support for any such modelling library, by simply implementing an appropriate backend.
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Reddit Recap Series: Backend Performance Tuning
The second problem was caused by the pgBouncer setup. pgBouncer is an impostor that owns several dozen of real PostgreSQL connections, but pretends that it has thousands of them available for the backend services. Similar to fractional-reserve banking. So, it needs a way to find out when the real DB connection becomes free and can be used by another service. Our pgBouncer was configured as pool_mode=transaction. I.e., it detected when the current transaction was over, and returned the PostgreSQL connection into the pool, making it available to other users. However, this mode was found to not work well with the code that was using SQLAlchemy: committing the current transaction immediately started a new one. So, the expensive connection between pgBouncer and PostgreSQL remained checked out as long as the connection from service to pgBouncer remained open (forever, or close to that).
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Domain model with SQLAlchemy
In this blog post, we will explore the power of SQLAlchemy, a popular ORM library in Python, to model our domain objects.
psycopg2
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Underappreciated Challenges with Python Packaging
Back when I used Psycopg2, there was no -binary package, so you'd get libpq set up similarly to pg-native. Docs say:
> The binary package is a practical choice for development and testing but in production it is advised to use the package built from sources.
Relevant GitHub discussion: https://github.com/psycopg/psycopg2/issues/674
I dunno, this seems worse to me.
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Has anyone made the switch from developing in Windows to macOS? Any general or specific advice about the switch?
psycopg2-binary. See https://github.com/psycopg/psycopg2/issues/1286.
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Dockerize a Django, React, and Postgres application with docker and docker-compose | by Anjal Bam
psycopg2-binary, PostgreSQL Database adapter for python.
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My Cookiecutter Django Setup
... # psycopg2==2.9.3 # https://github.com/psycopg/psycopg2 ...
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How to deploy the Front-end(React) and Backend(Django) with Postgres at Heroku
psycopg2: Psycopg is a PostgreSQL adapter for the Python programming language.
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How To Access And Query Your Amazon Redshift Data Using Python And R
Since Redshift is compatible with other databases such as PostgreSQL, we use the Python psycopg library to access and query the data from Redshift. We will then store the query results as a dataframe in pandas using the SQLAlchemy library.
- Exemplo de AWS API Gateway com Lambda pelo Terraform
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Using YugabyteDB in Python App Development
Since we are going to use both PostgreSQL and Apache Cassandra data model, we need to install those two drivers: psycopg2 for PostgreSQL and Python Driver for Apache Cassandra.
What are some alternatives?
tortoise-orm - Familiar asyncio ORM for python, built with relations in mind
PonyORM - Pony Object Relational Mapper
asyncpg - A fast PostgreSQL Database Client Library for Python/asyncio.
Peewee - a small, expressive orm -- supports postgresql, mysql, sqlite and cockroachdb
Orator - The Orator ORM provides a simple yet beautiful ActiveRecord implementation.
prisma-client-py - Prisma Client Python is an auto-generated and fully type-safe database client designed for ease of use
queries - PostgreSQL database access simplified
pyDAL - A pure Python Database Abstraction Layer
GINO - GINO Is Not ORM - a Python asyncio ORM on SQLAlchemy core.
pydantic - Data validation using Python type hints
PostgreSQL - Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
sqlmodel - SQL databases in Python, designed for simplicity, compatibility, and robustness.