Kafka with python: How to send topic to postgreSQL?

I am urged to use Kafka with python. Moreover, I need to develop a very simple producer-consumer application that reads metrics from a device in real-time and then publishes them to a topic ‘metrics’ …

Convert a list to comma separated strings for sql IN operator

This seems very obvious use case and I am surprised I was not able to find any single working solution for this. I have a method which returns a list of usernames something similar to this: username = …

column “e” of relation “analysis_result” does not exist

connection to postgresql database has been connected successfully.but while executing below query i am getting some kind of error which looks like : column “e” of relation “…

Python-Flask No response: After stayed active for one day

App description: I am using Python-Flask module with PostgreSql 12 as a REST API on a Web based application. There is a lot of request based heartbeat (JavaScript SetIntervals to send heartbeat almost …

asyncpg.exceptions.DataError: invalid input for query argument $1: 217027642536 (value out of int32 range)

I’m working on a project that uses FastAPI alongside Pydantic and SQLAlchemy. I’m also using encode/databases to manage database connections. But for some weird reason, I get asyncpg.exceptions.DataError: invalid input for query argument $1: 217027642536 (value out of int32 range) anytime I try saving to the database. Here’s what my code looks like: database.py database_manager.py endpoints.py models.py services.py I can’t see anything wrong with this. Someone, please tell me what the hell is going on? Answer You are basically having Integer Overflow, Int32 represents 2^31 – 1, that means it can store the values in range -2147483648 to 2147483648 but

Postgresql/psycopg2 password authentication error even though user and password are correct

I am new to web development in Python and would really appreciate some help. I am trying to set up psycopg2/peewee on WSL (Windows machine). In my Python code I store all of the info I’ll need to access a Postgres database, and then attempt to connect to the database as follows: I am certain that I have a Postgres user named ‘postgres’ with a password of ‘postgres’. Those are the credentials I use to start up a Postgres server once I have changed into the postgres user on my machine using su – postgres. When I launch my Python

How to upsert pandas DataFrame to PostgreSQL table?

I’ve scraped some data from web sources and stored it all in a pandas DataFrame. Now, in order harness the powerful db tools afforded by SQLAlchemy, I want to convert said DataFrame into a Table() …

Best method for sending large pandas dataframe to SQL database?

I have a pandas dataframe which has 10 columns and 10 million rows. I have created an empty table in pgadmin4 (an application to manage databases like MSSQL server) for this data to be stored. …

Python Subprocess Module | Postgres pg_dump with password

I have a database that I want to back up with my a python code. I tried to base my code from the code in this discussion that uses the subprocess module and pg_dump. My problem now is that I have to …

Django test error: Column does not exist

Postgresql, Django 2.0, Python 3.6.4 After running a migration that changed the name of a field desktop_pay to simply pay, I’m getting an error when running manage.py test saying the column pay does …