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Real-Time Chat App Using Flask and Socket.IO Step-by-Step
Original price was: 329.00£.99.00£Current price is: 99.00£.
Real-Time Chat App Using Flask and Socket.IO full guide Step-by-Step
Description
This chat app will let users:
- Join a chatroom
- Send/receive messages in real-time
- See who joined or left
We’ll build it step-by-step, no skips. Let’s start.
🔧 Step 1: Setup Your Environment
✅ 1.1. Create a project folder
Bash: mkdir flask-chat-app
cd flask-chat-app
✅ 1.2. Create a virtual environment (optional but recommended)
Bash: python -m venv venv
source venv/bin/activate # On Windows: venv\Scripts\activate
✅ 1.3. Install dependencies
Bash: pip install flask flask-socketio eventlet
📁 Step 2: Project Structure
flask-chat-app/
│
├── app.py ← Main Flask server
├── templates/
│ └── index.html ← Chat page UI
├── static/
│ └── chat.js ← Client-side JS for real-time messaging
▶️ Step 6: Run the App
Bash: python app.py
Then visit:
http://localhost:5000
🧪 Try It Out
- Open the app in two browser windows/tabs.
- Type a message in one window — it shows instantly in both!
✅ You Now Have:
- Flask server with WebSocket support
- Real-time 2-way messaging using Socket.IO
- Dynamic UI for chatting
🛠️ Next Steps (Optional Add-ons)
Let me know if you want to add:
- Usernames
- Rooms
- Timestamps
- Join/leave notifications
- Message persistence (SQLite or Firebase)
- Emojis or themes
I’ll walk you through each!
👤 Step-by-Step: Add Usernames to the Chat App
🧠 New Behavior:
- When a user opens the chat, they’ll be asked to enter a username.
- Their username will appear next to every message.
- Everyone will see when a user joins or leaves.
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