python basics,variables and data types

What is python?

Python is a popular programming language. It was created by Guido van Rossum, and released in 1991.

What can Python do?

• Python can be used on a server to create web applications.
• Python can be used to handle big data and perform complex mathematics.

Why Python?

• Python has a simple syntax similar to the English language.
• It allows developer simpler with fewer lines of code
• python can be treated as functional way,procedural way,object oriented way

Example:

print(“Harman”) Harman

Python Variables

Variables are containers for storing data values.

Rules for Python variables:

• A variable name must start with a letter or the underscore character
• A variable name cannot start with a number
• A variable name can only contain alpha-numeric characters and underscores (A-z, 0–9, and _ )
• Variable names are case-sensitive

Example:

x = 8 y = “John” print(x) print(y)

8

John

Python Data Types

Python has various data types:

• Numeric (int,float,complex)
• Boolean
• strings
• List
• Tuples
• Sets
• dictionary
• bits

Examples:

x=”Harman”(str)

x=25(int)

x=12.5(float)

x=1j(complex)

x=True,False(boolean)

x=“abc”, “def”

x=(“abc”, “def”)(tuple)

x={“abc”, “def”}(set)