Python

1. Operators

1.1. Addition

1.1.1. +

1.2. Subtraction

1.2.1. _

1.3. Multiplication

1.3.1. *

1.4. Division

1.4.1. /

1.5. Modulus

1.5.1. %

1.6. Exponentiation

1.6.1. **

1.7. Floor Division

1.7.1. //

2. Features

2.1. Simple

2.2. Open Source

2.3. Gui Programming

2.4. Interpreted

2.5. Object Oriented

2.6. Expressive Language

2.7. Large Standard Library

3. Conditional Statements

3.1. If Statements

3.2. If _Else Statements

3.2.1. If_ Else_ If Statements

3.2.1.1. Nester If Statements

4. High level Language

5. Data Types

5.1. Numeric

5.1.1. Integer

5.1.1.1. Complex Number

5.1.2. Float

5.2. Dictionary

5.3. Boolean

5.4. Set

5.5. Sequence Type

5.5.1. Strings

5.5.2. List

5.5.3. Tuple

6. Applications

6.1. Web Application

6.2. Destop Gui Application

6.3. Console Based Application

6.4. Software Development

6.5. Business Application

6.6. 3D CAD Application

6.7. Enterprise Application

6.8. Image Processing Application

6.9. Audio or Video-Based Application

7. Data Structures

7.1. List

7.2. Built In Data Structures

7.2.1. Tuple

7.2.2. Dictionary

7.2.3. Set

7.3. User _Defined Data Structures

7.3.1. Stack

7.3.2. Linked List

7.3.3. Queue

7.3.4. HashMap

7.3.5. Tree

7.3.6. Graph