General Things around Python

1) Python is Interpreted Language ** - Line by Line the Code is been Executed
**2) Object Oriented Language - Supports Classes and Objects
3) Dynamically Type Language - Here we need not have to Define Datatype of Variable
4) Ease to Practice - Start this as First Language
*5) Scope of Python *- Python is used Everywhere in IT Industry

Python Example

print("Hello World")

print Statements print Default in New Line
Run this code saving the File using .py Extension

Variables - Variables are the Name given to Memory Location

1. Variables names must start with a letter or an underscore. x = True # valid _y = True # valid 9x = False # starts with numeral => SyntaxError: invalid syntax $y = False # starts with symbol => SyntaxError: invalid syntax
2. The remainder of your variable name may consist of letters, numbers and underscores. has_0_in_it = "Still Valid"
3. Names are case sensitive. x = 9 y = X*5 =>NameError: name 'X' is not define

Global Variables

a = "good"

def test():
    global a
    b = "Omkar"

test()

print("python is " + a)

Inputs in Python are By Default Store as a String

Datatypes in Python
1) Numeric Datatype - int,float,Complex
2) Sequence Number - String,Char,List,Tuple
3) Dictionary,Set,Boolean

Examples on Datatype

# Integer
a = 3
type(a)

# Float
b = 4.5
print(b)

# Complex 
h = 2j
print(h)

# String 
p = "Python is Easy Lanuage"
print(p)

# Char
c = 'A'
print(c)

# List 
l = [1,2,3,4,5,"python","Language"]
print(l)
print(type(l))

# Tuple
t = (1,2,3,4,5)
print(t)

# Dictionary
d = {1:"One",2:"Two",3:"Three"}

# Set 
s = {2,2,2,2,2,234,,4,4,}
print(s)

Function

def test(a,b):
    """This is my Function for Addition"""
    return a+b
# This is Doc String

Operators in python

1) Arithmetic Operator (+,-,/,*,//,%)
2) Comparison Operator(< , > , = , >= , <=)
3) Logical Operator (and , or , not)
4) Identity Operator()
5) Membership Operator
6) Bitwise Operator

`a = 5
b = 10

print("Value is ", a+b)
print("Value is ", a-b)
print("Value is ", a/b)
print("Value is ", a//b)
print("Value is ", a*b)
print("Value is ", a**b)
print("Value is ", a+b)
print("Value is ", a+b)`