DEV Community: Kalainithi sekar

Day 16: Python Full Stack Development

Kalainithi sekar — Sat, 12 Sep 2026 14:54:00 +0000

Day 16 of learning Python Full Stack Development, Today the given task is to connect the database with FastAPI backend. I have connected existing FastAPI with PostgreSQL database and created database as smartbus and checking whether that FastAPI application can successfully connect to PostgreSQL. And also, I have created an two tables called "user" and "driver", the table consist of certain columns.

Next, I have created user APIs POST /users → (added new user into the user tables), GET /users → (Fetch the users from PostgreSQL and return them as JSON). Learnt CRUD, worked on ...to create and read data using FastAPI, using standard HTTP methods: @app.post() to create (write) data and @app.get() to read (retrieve) data. Running FastAPI application and opening Swagger to test: POST /users GET /users checking the data added through POST is stored in PostgreSQL and comes back through GET.
It was too difficult as beginner to do this... but side by side I have keep learning.

I may remember, involve me and I learn.

Day 15: Python Full Stack Development

Kalainithi sekar — Thu, 10 Sep 2026 17:55:59 +0000

Day 15 of learning Python Full Stack Development, I have chosen database as PostgreSQL for my SmartBus project, both MySQL and PostgreSQL are familiar and suitable with Python + FastAPI. PostgreSQL is particularly strong when application later needs geographic/location-based queries for which it provides better support. Today, I have installed PostgreSQL , learnt how to installed, how to connect server and created an table and tested inside with some values for learning purpose.

Day 13 & 14: Python Full Stack Development

Kalainithi sekar — Thu, 10 Sep 2026 16:46:46 +0000

Day 13 & 14 of learning Python Full Stack Development, These days I'm was covering some topics that is useful for my project "SmartBus".And I have created an individual repository in Github. I have learned about FastAPI ,An API is basically a way for one program to communicate with another program. FastAPI is a Python framework used to create APIs and i have installed FastAPI and uvicorn. I have gone through of programs related to FastAPI. Now, I'm familiar with the concepts.

Imagine. Believe. Achieve.

Day 12: Python Full Stack Development

Kalainithi sekar — Mon, 07 Sep 2026 17:17:09 +0000

Day 12 of learning Python Full Stack Development, Today....it starts with some modules that incorporated in SRS like admin, passenger, and driver. and how do they all connected with each other, how multiple user can interpret in this and how API transfer it. The advantages of my project "SmartBus" is ETA(Estimated Time Arrival) of the bus. And i have identified what are all drawback occurs in SRS and while doing the project to.

Day 11: Python Full Stack Development

Kalainithi sekar — Fri, 04 Sep 2026 15:53:32 +0000

Day 11 of learning Python Full Stack Development, Once I completed project's SRS(Software Requirements Specification) Today I have started finding the module that have in my project likely passenger, driver, admin, bus search, notification, stops, real-time bus tracking.... started working on it what are the role it plays in this project, what are the correction, drawbacks rectify. Also, improving the knowledge about SmartBus.

Day 9 & 10: Python Full Stack Development

Kalainithi sekar — Fri, 04 Sep 2026 08:55:12 +0000

Day 9 & 10 of learning Python Full Stack Development, as I'm going to start my project "SmartBus – Real-Time Bus Tracking and
Intelligent Passenger Notification System" it flows on tracking the bus and notifying the passenger while travelling in the. In Urban Area, we use different app to track the in bus but In Rural Area there is no sufficient technology. Therefore, my project focus on Passengers can enter their current location, starting point, and
destination to find suitable buses. The system shows the current bus
location, next stop, ETA, traffic, and delays.
It also sends real-time notifications when the bus departs, is delayed,
approaches the selected stop, or reaches the destination.

Day 7 & 8: Python Full Stack Development

Kalainithi sekar — Wed, 26 Aug 2026 15:20:11 +0000

Day 7 & 8 of learning Python Full Stack Development, yesterday and today I have started taking an notes for my project ideas and studying about API. As I'm going to started my project, reading some SRS, architecture and features involving in my project and side by side I was learning fastAPI

Day 6: Python Full Stack Development Learning

Kalainithi sekar — Sun, 23 Aug 2026 09:27:20 +0000

Today, its in-depth learning for API concept like working, uses and importants API. And now i can write an code for API in Python using FastAPI likely:
installing the fastAPI
"pip install fastapi uvicorn"
create a file called "main.py"

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def home():
return {"message": "Welcome to my first API"}

@app.get("/student")
def get_student():
return {
"id": 1,
"name": "Kavin",
"age": 21,
"department": "Computer Science"
}
to run this code, go to the folder containing "main.py" and similar to "Uvicorn running on http://" running , opening through browser and returns the message as "Welcome to my first API "
output:
{
"id": 1,
"name": "Kavin",
"age": 21,
"department": "Computer Science"
}

let's know what happened behind the code

At the end of this I could understand how could API can connect though the server.

Strengthening Learning Skills

Day 5: Python Full Stack Development

Kalainithi sekar — Thu, 20 Aug 2026 16:42:56 +0000

Day 5 of learning Python Full Stack Development
Today it start with API , In real world applications, API connect the frontend , backend, databases, mobile apps and external services. Starting with how to use an API - client /consumer and how to create an API -API developer/provider .It officially covers query parameter, validation, authentication-related features and testing.

The API receives the request, Python processes it, gets the data from the database and sends the response back. Real world example like weather application. And now I have understood, why do we need API's, Architecture Important like frontend to backend application and more.

Second concept In Python, routers and factories are design patterns and architectural tools used to organize code, manage control flow, and create objects efficiently. They are highly prevalent in web frameworks like FastAPI, Flask, and Django, as well as in general software development.

Combining Both: A Real-World Architecture In a professional Python application, routers and factories often work together. A Factory creates the application instance, and Routers are then attached to that instance to organize the endpoints.

"SkillForge💥"

Day 4:My Python Full Stack Development Learning Journey

Kalainithi sekar — Wed, 19 Aug 2026 15:32:29 +0000

Day 4 of learning Python Full Stack Development,
Today its starts with learning NLP concept like that helps computers understand, process, analyze and generate human language ,its important NLP and working process .Added on Natural Language Processing libraries like NLTK(Natural Language Toolkit),NLP libraries and application.

Second topic FastAPI , fast python web framework used to build APIs(Application Programming Interfaces), useful for backend technology and responding. HTTP Methods like GET, POST, DELETE and path , query parameters.
Frontend sends text to FastAPI → FastAPI processes it with an NLP/ML model → returns the prediction to the frontend.

added on some libraries in python like Pandas and SciPy are important libraries used in different platform like Data science ,ML etc,...

I'm excited learn further topics in upcoming sessions

learning, Practicing, and strengthening !

My Python Full Stack Development Learning Journey

Kalainithi sekar — Tue, 18 Aug 2026 16:55:09 +0000

Day 2 & 3: My Python Full Stack Development Learning Journey 🐍💻

My journey in **Python Full Stack Development continues! 🚀

During Day 2 and Day 3, I learned several important Python basics, including variables, data types, operators, conditional statements, and taking input from the user.

To strengthen my understanding, I practiced simple programs such as:

Checking whether a number is positive, negative, or zero
Checking whether a number is odd or even
Creating a simple calculator using if-else conditions
Working with different data types and user inputs

These practice programs helped me understand how Python works in real situations rather than just learning the concepts theoretically.

By the end of these sessions, I felt more confident and gained a stronger understanding of the concepts I practiced. I’m excited to continue learning, practicing, and improving my Python skills step by step.

Day 2 & 3 — Learning, Practicing, and Growing! 💪

From Today, I Started My Journey in Python Full Stack Development

Kalainithi sekar — Thu, 13 Aug 2026 12:33:13 +0000

Today, I started my journey in Python Full Stack Development.
It was my first class, and we began with a simple self-introduction.
My mentor then explained the basics of Python programming.
I practiced simple programs like addition, subtraction, and multiplication.
I also created a small program to display student information using variables.
I realized that strong basics are important for becoming a good developer.
This is just the beginning, and I am excited to learn more in the coming days.
Every expert was once a beginner.
Today, I started my journey.