Python is a versatile, high-level programming language that's easy to learn and use. It was created by Guido van Rossum and first released in 1991. Python emphasizes readability and simplicity, making it a great choice for beginners and professionals alike.
Key Features:
1. Easy to Read and Write: Python uses simple syntax that makes code easy to understand.
2. High-Level Language: Python abstracts away complex details, allowing you to focus on problem-solving.
3. Interpreted: Python code is executed line-by-line by the interpreter, making debugging easier.
4. Cross-Platform: It works on different operating systems like Windows, macOS, and Linux.
5. Large Standard Library: Python comes with a comprehensive library for handling various tasks, like file I/O, math, data manipulation, and more.
A typical starting point in any programming language is printing "Hello, World!" to the console.
2. Variables:
In Python, you don't need to declare variable types explicitly. Python automatically determines the type based on the assigned value.
3. Comments:
You can add comments in your code using the # symbol for single-line comments, or triple quotes for multi-line comments.
4. Data Types:
Python has several built-in data types:
• Numbers: int, float
• Strings: Sequences of characters, enclosed in either single or double quotes.
• Booleans: True or False
• Lists: Ordered collection of items.
• Tuples: Immutable ordered collection of items.
• Dictionaries: Key-value pairs.
• Sets: Unordered collection of unique items.
5. Control Flow:
You can control the flow of your program with conditional statements (if, elif, else) and loops (for, while).
If Statement:
For Loop:
While Loop:
6. Functions:
You can define functions in Python using the def keyword.
Python Libraries:
Python has many powerful libraries, like numpy for numerical computations, pandas for data manipulation, matplotlib for plotting, and requests for web requests.
You can install external libraries using pip:
Example: Using math library
Object-Oriented Programming (OOP):
Python supports OOP. You can define classes and create objects.
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