added pdbc installation steps\

Author: yaswanthteja

Diff for: 02_Type_System/03_StringsDatatype.md

@@ -88,7 +88,6 @@ IndexError: string index out of range
 
 `Note`: If we are trying to access characters of a string with out of range index then we will get error saying : IndexError
 
-
 Accesing from (-)ve index
 
 ```python-repl
@@ -102,16 +101,12 @@ Output
 ''
 ```
 
-
-
-It will return empty string 
+It will return empty string
 
 Slicing works like this: `String[start:stop:step]`. **When you slice from a higher index to a lower index, the default step is `1`, so it can't go backwards unless you specify a negative step.**
 
 So `num[-2:-6]` essentially means “start at the second-to-last element and go up to, but not including, the sixth-to-last element,” but since it can't move backwards with the default step, it returns nothing.
 
-
-
 To slice backwards, use a negative step:
 
 ```python
@@ -121,8 +116,6 @@ print(num[-2:-6:-1])
 # Outputs: [8, 7, 6, 5]
 ```
 
-
-
 # Assignment
 
 1.Write a program to accept some string from the keyboard and display its characters by index wise(both positive and nEgative index)
@@ -170,7 +163,7 @@ Eg:
 - if +ve then it should be forward direction(left to right) and we have to consider begin to end-1
 - if -ve then it should be backward direction(right to left) and we have to consider begin to end+1
 
-*** Note:
+ **Note**:
 
 - In the backward direction if end value is -1 then result is always empty.
 - In the forward direction if end value is 0 then result is always empty.
@@ -231,7 +224,7 @@ Python contains the following methods for this purpose.
 6) istitle(): Returns True if string is in title case
 7) isspace(): Returns True if string contains only spaces
 
-```
+```python
 s=input("Enter any character:") 
 if s.isalnum(): 
     print("Alpha Numeric Character") 

Diff for: 13_Python_DataBase_Connectivity/Python_Database_Connection.ipynb

@@ -0,0 +1,109 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "1cd5a9d5-72e2-4325-81a3-123299be6152",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Installing libraries\n",
+    "!pip install ipython-sql\n",
+    "\n",
+    "!pip install prettytable==0.7.2\n",
+    "\n",
+    "# Driver \n",
+    "!pip install mysql-connector-python"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "6acdeab0-6c0f-4dc8-926f-d149ca81df6e",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "id": "0f5f9df9-cad7-467a-acba-679c3531a09d",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The sql extension is already loaded. To reload it, use:\n",
+      "  %reload_ext sql\n"
+     ]
+    }
+   ],
+   "source": [
+    "#\n",
+    "\n",
+    "%load_ext sql\n",
+    "%sql mysql+mysqlconnector://root:root@localhost/"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "88683ce2-7b2d-4508-bfcf-02708b12c45c",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "id": "6148f2d7-bee2-43df-92c8-00f83d139f50",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * mysql+mysqlconnector://root:***@localhost/\n",
+      "(mysql.connector.errors.ProgrammingError) 1046 (3D000): No database selected\n",
+      "[SQL: show tables;]\n",
+      "(Background on this error at: https://sqlalche.me/e/20/f405)\n"
+     ]
+    }
+   ],
+   "source": [
+    "%%sql\n",
+    "show tables;"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "6302cd5e-a7d8-489c-b1c9-9f37c3940f8a",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.12.4"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}

Diff for: 13_Python_DataBase_Connectivity/Python_Database_installation.md

@@ -0,0 +1,188 @@
+
+
+# Setting Up JupyterLab with Database Connections
+
+This guide will walk you through the process of installing JupyterLab, setting up database drivers, and running SQL queries for MySQL, PostgreSQL, SQLite, MongoDB, and SQLAlchemy.
+
+## Prerequisites
+- Ensure you have Python installed on your system.
+- Install any Database like mysql,postgresql,mongodb..
+
+## Installation
+
+-  Open your terminal and run the below commands.
+- If your using mac repalce pip with pip3 and python with python3
+
+### Step 1: Install JupyterLab
+First, you need to install JupyterLab using pip:
+
+```bash
+pip install jupyterlab
+```
+
+### step 2: Start JupyterLab with:
+
+```
+jupyter lab
+```
+
+### 3. Installing SQL module in the notebook
+
+```
+ pip install ipython-sql
+
+```
+
+## Based on your database install  sql drivers
+
+### 1.Mysql
+
+### Installing the mysql in notebook
+
+```
+pip install mysql-connector-python
+```
+
+
+### Loading the mysql in the notebook
+
+```
+# Load the SQL extension
+%load_ext sql
+
+# Set the connection string
+
+%sql mysql+mysqlconnector://your_username:your_password@localhost/your_database
+          # replace your_database with your sql database name
+```
+
+### example:
+
+```
+%load_ext sql
+%sql mysql+mysqlconnector://root:root@localhost/test         # here test is the database name
+```
+
+### Now run magic command %%sql for every shell
+
+```
+%%sql
+
+```
+### Example : if you want to run any sql command first we need to start including %%sql and following query
+
+```
+%%sql
+SHOW TABLES;
+```
+
+
+### 2. Postgresql
+
+### 1.Install the postgresql
+
+```
+pip install psycopg2-binary ipython-sql
+
+```
+
+
+### 2 Connecting the driver
+```
+# Format
+# Load the SQL extension
+
+%load_ext sql
+
+# Set the connection string
+%sql postgresql://your_username:your_password@localhost/your_database
+
+```
+
+# Example format
+``` 
+%load_ext sql
+%sql postgresql://postgres:password123@localhost/dvdrental
+```
+
+- dialect+driver in this case would just be postgresql , but feel free to use a different database software here.
+- username:password is where you will substitute your username and password.
+- host is usually just localhost.
+- In my experience, port does not need to be specified.
+- database is the name of the database to connect to.
+
+
+### 3. Sqlite
+
+### Install the sqlite
+
+```
+pip install sqlite ipython-sql
+```
+
+### Connect the sqlite
+
+```
+# Load the SQL extension
+%load_ext sql
+
+# Set the connection string
+%sql sqlite:///your_database.db
+
+```
+
+### 4. Mongodb
+
+
+### Install the Mongodb
+```
+pip install pymongo
+
+```
+
+
+### Connecting the Mongodb
+
+```
+from pymongo import MongoClient
+
+# Connect to MongoDB
+client = MongoClient('mongodb://localhost:27017/')
+db = client.your_database
+
+# Run a sample query
+print(db.your_collection.find_one())
+
+```
+
+
+### SQLAlchemy
+
+
+#### Install SqlAlchemy
+
+```
+pip install sqlalchemy ipython-sql
+
+```
+
+### Connect the sqlAlchemy
+
+```
+from sqlalchemy import create_engine
+
+# Set the connection string
+engine = create_engine('postgresql://your_username:your_password@localhost/your_database')
+
+# Run a sample query
+connection = engine.connect()
+result = connection.execute("SELECT * FROM your_table")
+for row in result:
+    print(row)
+connection.close()
+
+```
+
+
+
+