Getting Started with Python

Python, what is it?

1. Python is a dynamically typed, general-purpose programming language that supports an object-oriented programming approach as well as a functional programming approach.

2. Python consists of vast libraries and various frameworks like Django, Tensorflow, Flask, Pandas, Keras, etc.

3. Python is an interpreted and high-level programming language but quite simple.

Installation of python

For linux

To install Python on Linux, We need to run the below commands

sudo apt-get update

sudo apt-get install python3

After installation to check the Python version need run the below command

Python3 --version

Data Types in Python:

Python supports the following data types:

1. Numeric types

   int: represents integer values (e.g.: 1, 2, 3).

   float: represents floating-point numbers with decimal places (e.g.: 3.14, 2.0).

   complex: represents complex numbers in the form a + bi (e.g: 2+3j).

2. Boolean type:

   bool: represents either True or False.

3. Sequence types:

   str: represents a sequence of characters.(e.g: "Hello World!", "Test string")

   list: represents an ordered collection of elements that can be changed (mutable). (e.g: a= [1,2,3,4,5,6])

   tuple: represents an ordered collection of elements that cannot be changed (immutable). (e.g: tuple = ("parrot", "sparrow"))

   range: represents a sequence of numbers that can be iterated over. (e.g: range(5) returns 0, 1, 2, 3, 4)

4. Set types:

   Set represents an unordered collection of unique elements. (e.g: myset = {"apple", "banana", "cherry"}

5. NoneType:

   NoneType is a special data type in Python that represents the absence of a value. It is often used as a default value or a placeholder. (e.g: x = None => print(x))

6. Mapping type:

   dict: represents a collection of key-value pairs. (e.g: a = {1:"first name", 2: "last name", "age":33})