Swapnil Saurav

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Oct 25 2022
Learn and Practice Javascript

DAY 1: 25 OCT 2022

 
<HTML>

<Head>
    <Title> Learning HTML AND JAVASCRIPT</Title>

    <Script>
        //displaying a welcome message

        /*
        3 ways to use numbers
        1. var
        2. let
        3. const
   
        */
        //var examples – older version of javascript
        var num3 = 50
        var num4 = 90
        var sum1 = num3 + num4

        //let is used in the newer version
        let name = “Sachin“ //declaring and assigning value to a variable
        let num1 = 50
        let num2 = 60
        num1 = 40
        let sum = num1 + num2

        //Const
        const pi = 3.14
        //pi = 4

        /*
        Creating a welcome message for the website’s reader
        thank you
        go ahead
        */
        msg = “Welcome to Javascript learning Session “ + name

        //usage of  ‘  ‘  and ”  “
        let str1 = “Hello“  //string datatype
        let str2 = ‘How are you?‘;
        // let’s go
        str1 = “let’s go“;
        // he said,”Whats you name?”
        str2 = ‘he said,”Whats you name?” ‘;

        //boolean: true and false
        num1 = 80
        num2 = 60
        num1 == num2  //false

        num1 < num2  // true
        if (num1 < num2) alert(“Num1 is smaller than num2“);

        alert(msg)

        //array
        let array1 = [“JAN“, “Feb“, “Mar“]

        //Object data type
        let obj1 = { fname: “Sachin“, lname: “Tendulkar“, runs: 25000, sports: “Cricket“ }
        // datatype is object

        sum = 12 + 24 + 36 + “hello“

        //Datatype in Javascript is dynamic in nature
        let x  //variable is declared but not defined (defined = has to have a datatype)
        x = 99  // number datatype
        x = [“JAN“, “Feb“, “Mar“]  //will not throw error – dynamically typed data

        //numbers with scientific notation (e)
        let y = 99e6 //99000000
        let z = 9.9e7
        //alert(z)
        let t = 5.5e-3  //  0.0055
        alert(t)

        // typeof will give the datatype
        alert(typeof x)
        alert(typeof (y))
        let var4   //undefined
        alert(typeof (var4))

    </Script>

</Head>

<Body>

    Hello everyone, how are you doing?

</Body>

</HTML>

Day 2: 26 OCT 2022


<HTML>

<Head>
    <Title> Learning 2</Title>


    <Script>
        //declare a function
        function mysum(n1, n2, n3) {
            let total
            total = n1 + n2 + n3
            return total
        }
        //num1 = total – error: notdefined as its local variable
        let result = mysum(11, 22, 33)
        alert(“Sum is “ + mysum(11, 22, 33))

        /*
            avg >=80 – Grade A
            avg >=60 (<80) – Grade B
            avg >=40 – Grade C
            avg <40 – Grade D
        */
        let avg = 95

        if (avg >= 80) {
            //what happens if the condition is true
            alert(“Grade A“)
        } else if (avg >= 60) {
            alert(“Grade B“)
        } else if (avg >= 40) {
            alert(“Grade C“)
        } else {
            alert(“Grade D“)
        }

        // SWITCH – also used for conditions
        //  Date()  – inbuilt function to get the date, getDay() will the day in integer value
        // 0 for Sunday, 1 for Monday …
        dayval = new Date().getDay()  //day in number
        switch (dayval) {
            case 2:
                alert(“Today is Tuesday“)
                break
            case 0:
                alert(“Today is Sunday“)
                break
            case 1:
                alert(“Today is Monday“)
                break

            case 3:
                alert(“Today is Wednesday“)
                break
            case 4:
                alert(“Today is Thursday“)
                break
            case 5:

            case 6:
                alert(“It could be Friday or Saturday“)
                break
            default:
                alert(“I Dont Know the Day“)
                break
        }

        /*
        Loops in Javascript: There are multiple types:
        1. for
        2. for /in – iterated through the properties of object
        3. for /out – iterated through the values of object

        4. while – is entry controlled loop
        5. do/while – is exit controlled loop
        */

        //for loop
        for (let i = 0; i < 5; i++) {
            alert(“Loop is running : “ + i)
        }
    </Script>

</Head>

<body>

</body>

</HTML>

Day 3: For Loop

<html>

<head>
    <script>
        /*
        Loops in Javascript: There are multiple types:
        1. for
        2. for /in – iterated through the properties of object
        3. for /of – iterated through the values of object

        4. while – is entry controlled loop
        5. do/while – is exit controlled loop
        */

        //for loop
        let i = 1
        for (; i < 5; i++) {
            alert(“Loop is running : “ + i)
        }

        i = 1
        for (; i < 1; i++) {
            alert(“Loop is running : “ + i)
        }

        let obj1 = { fname: “Sachin“, lname: “Tendulkar“, runs: 25000, sports: “Cricket“ }
        for (let j in obj1) {
            alert(“j = “ + j + “ and value is “ + obj1[j])

        }
        let runs = [102, 2, 97, 0, 95]
        for (let j in runs) {
            alert(“j = “ + j + “ and value is “ + runs[j])
        }
        /*
        of is not iteratable on Object
        for (let j of obj1) {
            alert(“j = ” + j)

        }
        */
        name = “Sachin“
        for (let j of name) {
            alert(“j = “ + j)

        }

        //Creating a function to demonstrate forEach() of array
        /*
        it takes 3 arguments: item value, index and the array
        */
        runs = [102, 2, 97, 0, 95]
        let out_val = “”
        let ind_val = “”
        let array_val = “”

        runs.forEach(func_array)

        function func_array(val, index, array) {
            out_val += val + “ ,“
            ind_val += index + “ ,“
            array_val += array + “ ,“
        }
        alert(“Output of the function is: Value = “ + out_val + “ index = “ + ind_val + “ array = “ + array_val)
    </script>
</head>

<body>

</body>

</html>

DAY 4: WHILE

<html>

<head>
    <script>
        runs = [102, 2, 97, 0, 95]
        let out_val = 0
        let ind_val = 0
        let array_val = 0

        runs.forEach(func_array)

        function func_array(val, index, array) {
            out_val += val
            ind_val += index + “ ,“
            if (index < 1) {
                array_val = array
            }

        }
        alert(“Output of the function is: Sum of Value = “ + out_val + “ index = “ + ind_val + “ array = “ + array_val)
        // If is used when you know how many times to repeat
        //While works on conditions – while will repeat if the condition is True
        let a = 0
        while (a < 10) {
            alert(a)
            a += 2
        }
        //while is entry controlled loop
        a = true
        let num = 10
        while (a) {
            alert(num)
            num += 10
            if (num > 50) {
                break
            }
        }
        // do while – exit controlled
        num = 10
        do {
            alert(“Second Run“ + num)
            num += 10
        }
        while (num < 0)

        //iterating through an array
        let players = [“Sachin“, “Rohit“, “Rahul“, “Kapil“, “Kohli“]
        let all_players = “”
        let counter = 0
        while (players[counter]) {
            all_players += players[counter] + “ “
            counter += 1
        }
        alert(all_players)
        // a + = num   => a = a + num

        //Map Declaration
        runs_scored = new Map([
            [“Sachin“, 19000],
            [“Kapil“, 11000],
            [“Sunil“, 18000]
        ])

        //get() to fetch the data
        alert(“Runs scored by Sunil is “ + runs_scored.get(“Sunil“))

        //set – add value to existing map
        runs_scored.set(“Virat“, 8900)
        alert(“Runs scored by Virat is “ + runs_scored.get(“Virat“))
    </script>
</head>
<body>
</body>
</html>

DAY 5

<html>

<head>
    <script>
        //MAPS
        // new Map() – create a new map
        //set() – to add member
        //get() – get the value from the map

        players = new Map([
            [“Sachin“, 19000],
            [“Rohit“, 11000,],
            [“Kapil“, 9000],
            [“Sunil“, 18800]
        ])
        key_to_delete = “Sachin“
        alert(players.has(key_to_delete))
        if (players.has(key_to_delete)) {
            players.delete(key_to_delete)
        }
        players.set(“Dhoni“, 13000)
        alert(“Size of the players map is “ + players.size)
        //if I want to iterate through : forEach
        let check = 0
        players.forEach(function (value, key) {
            if (key == “Dhoni“) {
                check = 1
            }
        })
        if (check == 0) {
            alert(“Dhoni is not in the map“)
        } else {
            alert(“Dhoni is in the map“)
        }

        // entries: get you all the entries
        //iterate through each key and value pair
        alert(“players.entries :“)
        for (let x of players.entries()) {
            alert(x)
        }
    </script>
</head>

<body>
</body>

</html>

DAY 6

<html>

<head>
    <title> My Website</title>
    <script>
        let a = 5
        debugger
        let b = 6
        //debugger
        c = a + b
        //debugger
        console.log(c)

        // arrow function
        let myfunction = (x, y, z) => 2 * x – y + 0.38 * z

        let val = myfunction(5, 8, 100)
        //alert(val)
        console.log(val)

        class Laptop {
            //class level variables
            total = 0
            //class level methods

            //object level method
            constructor(person, make, os, year) {
                this.person = person
                this.make_co = make  //object level variables
                this.os = os
                this.purchase_year = year
            }

            //creating one more method
            age() {
                let date = new Date()  //creating object of Date class
                this.age_val = date.getFullYear() – this.purchase_year
                //console.log(this.age_val)
            }
            //creating another method
            display() {
                console.log(this.person + “ has a laptop of “ + this.make_co + “ make which uses “ + this.os + “ and is “ + this.age_val + “ year old“)
            }
        }
        //create object of class laptop
        let sachin_laptop = new Laptop(“Sachin“, “HP“, “Windows“, 2011)
        let kohli_laptop = new Laptop(“Kohli“, “Dell“, “Linux“, 2019)
        let dhonin_laptop = new Laptop(“Dhoni“, “Dell“, “Mac“, 2022)
        console.log(kohli_laptop.os)
        kohli_laptop.age()
        console.log(“Kohli’s laptop age in yrs is “ + kohli_laptop.age_val)
        sachin_laptop.age()
        sachin_laptop.display()
    </script>
</head>

<body>
    <H1> My Webpage</H1>
</body>

</html>
<html>

<head>
    <script>
        const sub1 = 80
        const sub2 = 80
        const sub3 = 80
        const sub4 = 0
        const sub5 = 0
        let sum = sub1 + sub2 + sub3 + sub4 + sub5
        let avg = sum / 5
        console.log(“Average marks scored by the student is “ + avg)
        //avg > 90 A, B..
        if (avg >= 90) {
            console.log(“Grade is A”)
        } else if (avg >= 80) {
            console.log(“Grade is B”)
        } else if (avg >= 70) {
            console.log(“Grade is C”)
        } else if (avg >= 60) {
            console.log(“Grade is D”)
        } else if (avg >= 50) {
            console.log(“Grade is E”)
        } else {
            console.log(“Grade is F”)
        }

        //Example 2
        let weight = 85  //kg
        let height = 1.4 //meters
        let bmi = weight / height ** 2
        console.log(“BMI is “ + bmi)

        //function to check if input number is prime or not
        function checkPrime(num) {
            let isPrime = true

            for (let i = 2; i < num / 2; i++) {
                if (num % i == 0) {
                    isPrime = false
                    break
                }
            }
            return isPrime
        }
        let result = checkPrime(61)
        if (result) {
            console.log(“Its a prime number”)
        } else {
            console.log(“Its not a prime number”)
        }
        st = 4500
        en = 5000
        console.log(“Now generating prime numbers between “ + st + ” and “ + en)
        for (i = st; i <= en; i++) {
            result = checkPrime(i)
            if (result) {
                console.log(i)
            }

        }
    </script>
</head>

<body>

</body>

</html>
<html>

<head>
    <script>
        class TipCalc {
            constructor(bill_amount) {
                this.amount = bill_amount
            }

            calculator() {
                let tip = –1
                // Bill amount is between 50 and 300 – then its 15%, otherwise its 20%
                if (this.amount >= 50 && this.amount <= 300) {
                    tip = this.amount * 0.15

                } else {
                    tip = this.amount * 0.20
                }
                return tip
            }
        }
        amount = 49
        let mytip1 = new TipCalc(amount)
        tip_cal = mytip1.calculator()
        total = amount + tip_cal
        console.log(“The bill was $” + amount + ” the tip was $” + tip_cal + ” total value is $” + total + “.”)

    </script>
</head>

<body>

</body>

</html>
<html>

<head>
    <script>
        let a = 11  //a to be less than 10 or throw error
        try {
            if (a > 15) throw “High value for a”
            if (a < 8) throw “Low value for a”
            let b = “hello”
            let c = 0
            c = b / g
            console.log(“Result = “, c)

        }
        catch (err) {
            console.log(“Caught an error in try. Error message: “ + err)
            let mesg = err
            if (err == “High value for a”) {
                alert(“Please reduce the value of a and try again”)
            }
            if (err == “ReferenceError: g is not defined”) {
                alert(“You are using g without declaring g variable”)
            }
        }
        finally {
            console.log(“I dont care about the error”)
        }
    </script>
</head>

<body>

</body>

</html>
// Try and catch to handle run time errors
<html>

<head>
    <script>
        today_date = new Date() //this will have date object storing current date and time
        console.log(today_date)

        today_date = new Date(2022, 10)  //year, month (previous)
        console.log(today_date)


        today_date = new Date(“October 1, 2020 05:36:12”)
        console.log(today_date)

        today_date = new Date(“2022-11-29”)
        console.log(today_date)

        today_date = new Date(2021, 11, 15, 1)  // year, month, date, hour
        console.log(today_date.getFullYear())
        console.log(today_date.getMonth())
        months_txt = [“January”, “February”, “March”, “April”, “May”,
            “June”, “July”, “August”, “September”, “October”, “November”, “December”]
        console.log(months_txt[today_date.getMonth() – 1])
        //getMinutes() getSeconds()  getMilliseconds() getDate()
        console.log(today_date.getDate())

        //Set the dates
        //setDate()  setFullYear() …
        console.log(today_date.setFullYear(2050))
        console.log(today_date.getDate())
        text = ‘{“player”: [{“Name”: “Sachin”, “City”: “Mumbai”,’ +
            ‘”Sports”: “Cricket”}, {“Name”: “Kapil”,’ +
            ‘”City”: “Gurgaon”,”Sports”: “Cricket”}]}’;
        json_val = JSON.parse(text)
        console.log(json_val.player[1].Name + ” : “ +
            json_val.player[0].City)
        /*
   today_date = new Date()
   console.log(today_date)

   today_date = new Date()
   console.log(today_date)

   today_date = new Date()
   console.log(today_date)

   today_date = new Date()
   console.log(today_date)

   today_date = new Date()
   console.log(today_date)
   */
    </script>
</head>

<body>

</body>

</html>
<html>

<head>

</head>

<body>
    <h1> Welcome </h1>
    <p id=“test1”> </p>
    <h2> How are you?</h2>
    <p id=“test2”> </p>
    <p id=“test3”> Twinkle Twinkle Little Star </p>
    <form name=“Form1” action=“practice7.html” method=“post”>
        Name: <input type=“text” name=“name”>
    </form>
    <script>
        choice = 5

        document.getElementById(“test1”).innerHTML = “<H3>Sachin<H3>”
        document.getElementById(“test1”).innerHTML = “Date: “ + Date()
        //id_test3 = document.getElementById(“test3”)
        document.getElementsByTagName
        val_test3 = document.getElementsByTagName(“p”)
        //console.log(val_test3)
        document.write(“THIS IS HELLO FROM ME”)
    </script>
</body>

</html>
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Oct 19 2022
Learn Data Science

https://youtu.be/mr15WQQoTvI

19 OCTOBER 2022

Day 1 Video Session

 

print("hello")
print(5+4)
print('5+5')
print("10+frgjdsijgdskmdklfmdfmv4",5+6," = ",11) 
# 4 parameters/arguments
#Comment
price = 50  #variable called price is assgined a value 50
quantity = 23
TotalCost = price * quantity
print(TotalCost)

 

#The total cost of XquantityX pens selling at XpriceX would be XtotalcostX
print(“The total cost of”,quantity,“pens selling at”,price,“would be”,TotalCost)
print(f”The total cost of {quantity} pens selling at {price} would be {TotalCost}”)

#going to use format string

 

Session 2: 20 OCT 2022

VIDEO Recording

var1 = 80
var2 = 60
sdfdwfdsg = "var3"
#Arithematic
s1 = var1 + var2 
print(s1, var1 /var2,"Now minus", var1 - var2)
print(var1 - var2)
print(var1 * var2)
print(var1 / var2) #division
print(var1 // var2)  #integer division

## Data types: nature of data that we can work
#integer : -inf to +inf without decimal
#float : decimal -5.0
#string: 'hello'
#bool (boolean): True / False
Val1 = True
#input()   #take input from the user
print(type(Val1))  #give you the datatype of the variable
price = 50
quantity =23
totalcost = price * quantity
a=50
b=23
c=a*b

VIDEO 3

#arithematic operators:  + - * / //
var1 = 3
var2 = 5
print(var1 ** var2) #power()
print(var1 % var2) #reminder

#Relational operators: will always result in bool output (T/F)
print("var1 < var2: ",var1 < var2) #is var1 less than var2
print(var1 > var2) #is var1 greater than var2
print(var1 == var2)
print(var1 <= var2) #is var1 less than or equal to var2
print(var1 >= var2)
print(var1 != var2) #not equal to

#Logical operators: will have bool input and bool output
# and  or not
# F and F = F and T = T and F = FALSE    T and T = T
print(True and True)
print(True and False)

#or
# T or T = F or T = T or F = True      F or F = False
print("True or True: ",True or True)
print(True or False)

print("Grade  A"   )
print("Grade B")
print("Grade C")
print("Grade D")
print("Grade E")
print()
avg = 40
if avg>=50:
    print("i am inside if")
    print()
    sum=5+3
    print(sum)

print("I am in main")

Session on 21 OCT 2022

subject1 = input("Enter the marks in subject 1: ")
print(type(subject1))
subject1 = int(subject1)
print(type(subject1))
subject2 = 99
subject3 = 100
avg_marks = (subject1+subject2+subject3)/3
print("Average marks scored is ",avg_marks)
if avg_marks >=80:
    print("You got grade A")
    if avg_marks >=90:
        print("You also win President Medal")
elif avg_marks >=70:
    print("You got grade B")
elif avg_marks >=60:
    print("You got grade C")
elif avg_marks >=50:
    print("You got grade D")
else:
    print("You didnt get grade E")

print("Thank You")

#Loops - to repeat the steps more than once
#1. For : we use it when we know how many times to execute
#2. While : we dont know how many times but we know condition till when
for i in range(10):  #range(10): starts from zero and goes upto 10 (not included 10)
    print("Hello")

count = 0
while count<10:
    print("Hello in While")
    count=count+1
#for loop
for j in range(5):
    for i in range(5):
        print("*", end=" ")
    print()

print()

# \n - newline
#print("A \n B \n C \n D \n E")
#print has invisible \n at the end

print("Hello\n")
print("Good Morning")

26 OCT 2022

#List methods
list1 = [2,4,6,8,10,8,19,8]
list1.append(3)  #adds at the end of the list
print(list1)
list1.insert(2,14) #(pos,value)
print(list1)

#remove elements from a list
#pop() - removes element at the given position
list1.pop(1)
#remove() - remove given element
list1.remove(10)
print(list1)

#index()
print("Index: ",list1.index(8))

pos=[]
c=0
for i in list1:
    if 8 ==i:
        pos.append(c)
    c+=1
print("Position of 8 in the list: ",pos)
list1.pop(pos[-1])

list2 = [10,20,30,40]
list3 = list1 + list2
print(list3)
list1.extend(list2)  #list1 = list1 + list2
print(list1)
list1.reverse() #just reverse the elements
print(list1)
list1.sort() #increasing order
print(list1)
list1.sort(reverse=True) #decreasing order
print(list1)

#
list1 = [2, 14, 6, 8, 8, 19, 8, 3]
list1[1] = 4  #we can edit is called MUTABLE
print(list1)
list2 = list1  #deep copy: both points to same data
list3 = list1.copy()  #shallow copy
print("1. List1: ",list1)
print("1. List2: ",list2)
print("1. List3: ",list3)
list2.append(22)
print("2. List1: ",list1)
print("2. List2: ",list2)
print("2. List3: ",list3)

27 OCT 2022


#linear ordered mutable collection - List
#linear ordered immutable collection - Tuple

t1 = (1,2,3,4,5)
print(type(t1))
print(t1[-1])
#[] brackets are used for indexing in all datatypes and also list
#() - for tuple and also for function
print(t1)
#t1[1] = 10 - TypeError: 'tuple' object does not support item assignment
print(t1.index(3))
print(t1.count(3))
n1,n2,n3 = (2,4,6)  #unpacking
print(n2)

for i in t1:
    print(i)

#comparing: always compares first element and if they are equal
# it goes to the next and so on
#(2,4) (2,4)
print(type(t1))
t1 = list(t1)
print(type(t1))
t1 = tuple(t1)

#Dictionary
#non-linear unordered mutable collection
d1 = {}
print(type(d1))
d1 = {"fname":"Sachin", "lname":"Tendulkar","Runs": 130000,"City":"Mumbai"}
d1["lname"] = "TENDULKAR"
print(d1["lname"])
#
d1.popitem()
print(d1)
d1.pop("fname") #removes the value with the given key
print(d1)

#keys
print(d1.keys())
for i in d1.keys():
    if d1[i] == "TENDULKAR":
        print("Remove this key: ",i)

print(d1.values())
for i in d1.items():
    print(i[1])

d1 = {"fname":"Sachin", "lname":"Tendulkar","Runs": 130000,"City":"Mumbai"}
d2 = d1
d3 = d1.copy()
print("1. D1 = ",d1)
print("1. D2 = ",d2)
print("1. D3 = ",d3)
d1.update({"Country":"India"})
print("2. D1 = ",d1)
print("2. D2 = ",d2)
print("3. D3 = ",d3)

d3.clear()
print(d2)

#Sets
#linear un-ordered mutable collection - sets
set1 = {1,2,3,3,4,3,4,2,1}
print(type(set1))
print(set1)

s1 = {1,2,3,4,5}
s2 = {3,4,5,6,7}
print(s1|s2)  # Union
print(s1 & s2)  # Intersection
print(s1 - s2) #diff
print(s2 - s1)  #diff
print(s1 ^ s2) #symm diff
print(s1.intersection(s2))  #without update will give a new set
print(s1.update(s2)) #update will update the s1 with new value
print(s1)

28 OCT 2022

#Functions
def mystatements():
    print("How are you?")
    print("Whats your name?")
    print("Where are you going?")

print("Hello")
mystatements()
print("Second")
mystatements()

def myaddition():
    n1 = int(input("Enter number 1 to add: "))
    n2 = 50
    sum = n1 + n2
    print("Addition of two numbers is ",sum)

myaddition()
num1,num2,num3 = 15,20,25
def myaddition2(n1,n3,n2):  #accepting arguments
    #n1 = int(input("Enter number 1 to add: "))
    n2 = 50
    sum = n1 + n2
    print("Addition of two numbers is ",sum)
myaddition2(num1,num2,num3)  #num1 is the argument we are passing
## positional & required


##2. positional & default
def myaddition2(n1,n2,n3=0):  #accepting arguments
    #n1 = int(input("Enter number 1 to add: "))
    n2 = 50
    sum = n1 + n2
    print("Addition of two numbers is ",sum)
myaddition2(num1,num2)

#3.keyword arguments (not positional)
def myaddition2(n1,n2,n3=0):  #accepting arguments
    #n1 = int(input("Enter number 1 to add: "))
    n2 = 50
    sum = n1 + n2
    print("Addition of two numbers is ",sum)
myaddition2(n3=10,n2=num1,n1=num2)

SESSION 2


#4. Function with takes variable number of arguments
def myownfunction(num1, *numbers, **values):
    print("Num 1 is ",num1)
    print("Numbers : ",numbers)
    print("Values: ", values)
    sum=0
    for i in numbers:
        sum+=i
    return sum

def myown2(num1, *numbers, **values):
    print("Num 1 is ",num1)
    print("Numbers : ",numbers)
    print("Values: ", values)
    sum=0
    for i in numbers:
        sum+=i

print("myownfunction: ",myownfunction(3,4,5))
print("MyOwn2: ",myown2(3,4,5))
out = myown2(3,4,5)
print("OUT = ",out)

output = myownfunction("Hello",2,4,6,8,10,12,14,16,18,20, name="Sachin",city="Mumbai",runs=25000)
print("Output is: ",output)

set1= {1,2,3}
set2 = {3,4,5}
print("Union",set1.union(set2))  #return
print("Union Update",set1.update(set2)) #doesnt have return
print("Set1: ",set1)

#
# Class and Objects
#collection of variables and functions (methods) - grouped together to define something
class Dog:
    num_legs = 4
    def __init__(self,name,make):
        self.name = name
        self.breed = make

    def display(self):
        print("Name is ",self.name)
        print("Breed is ",self.breed)

mydog1 = Dog("Tiger","BBB") #object 1 of class Dog
mydog2 = Dog("Moti","AAA") #object 2 of class Dog
#mydog2.initialize()
#mydog1.initialize()
print(mydog1.num_legs)
print(mydog2.num_legs)
mydog1.display()
class FourSides:
    def __init__(self,a):
        self.side1 = a
        print('FourSides Object is created')
    def _display_4sides(self):
        print("Display in 4 Sides")
    def area(self):
        print("Sorry, I am not complete")
    def peri(self):
        print("Sorry, I am not complete")

class Square(FourSides):
    def __init__(self,a):
        FourSides.__init__(self,a)
        print('Square Object is created')
    def area(self):
        print("Area is ",self.side1**2)
class Rectangle(FourSides):
    def __init__(self,a, b):
        FourSides.__init__(self, a)
        self.side2 = b
        print('Rectangle Object is created')
    def area(self):
        print("Area is ",self.side1*self.side2)


sq = Square(10)
print(sq.side1)
rc = Rectangle(5,10)
print(rc.side1)
sq.area()
#string
var1 = "Hello"
var2 = 'Hello'
var1 = '''Hello'''
var1 = """Hello"""
var1 = """How are you
Where are you doing
When will you be back
Take care"""
print(type(var1))
print(var1)
print(var1[0:3])
print(var1[-4:])

for i in var2:
    print(i)
for i in range(len(var2)):
    print(var2[i])

if "e" in var2:
    print("E is in the string")

var3 = "i am fine and am doing good"
find = var3.find("am",5,19)
if find!= -1:
    var5 = var3.index("am",5,19)
    print(var5)
print("  ".isspace())
print(var3.islower())
print("I Am DoinG Good".istitle())
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