##### Quest Learning DS December 2022

Day 1:

`a=5#data type is integerprint(a)print(type(a))a='''hellohow are youI am fine'''#type is stringprint(a)print(type(a))a="""hello"""#type is stringprint(a)print(type(a))a=5.0print(a)print(type(a))a = True  #Falseprint(a)print(type(a))a=5jprint(a);print(type(a));print(a*a)print("How are you?",end=" -> ")print("I am doing good.")quant = 40price = 10total_cost = quant * priceprint("Product quantity is",quant,"and bought at",price,"will cost total of Rs",total_cost)print(f"Product quantity is {quant} and bought at {price} will cost total of Rs {total_cost}")length = 50breadth = 20area = length * breadth #calc#output: A rectangle with length 50 and breadth 20 will have area of area_val and perimter of perimeter_vl#Operators:##Arithematic operators   +  -  *  /   ** (power) // (integer division)  % (reminder)a = 10b = 3print(a + b)print(a - b)print(a * b)print(a / b)print(a ** b)print(a // b)print(a % b)##Comparison operator:  ==  !=  >  >=   <   <=#input as numbers and output will be boolean valuea=10b=3print(a==b) #Fprint(a!=b)  #Tprint(a > b)print(a>=b)print(a<=b)print(a<b)## Logical:  and or  nota = 10b = 3print(a >b and b !=a)  # T and T = Tprint( True and True)print( False and True)print( False and False)print( True and False)print(not a!=b)print( True or True)print( False or True)print( False or False)print( True or False)#bitwise:  >>   <<  & |  ~a=23print(bin(a))  #bin - converts  to binary( 0b)  oct - octal  0c  hex - hexadecimal  0xprint(hex(a))print("23 >> 1: ",23 >> 1)  #bitwise: right shiftprint("23 >> 2: ",23 >> 2)  #bitwise: right shiftprint(23 << 2)  #bitwise: left shiftprint(int(0b1011))#  10111.   1011print(" & : ",23 & 12)# 1 0 1 1 1# 0 1 1 0 0#&#--------------# 0 0 1 0 0# 1 1 1 1 1print(" | : ",23|     12)a=-5if a < 0:    print()    print()    print()    b = 6+4    print(b)print("Thank you 1")a = -5if a<0:    print("This is a negative number")else:    print("This is not a negative number")a=0if a<0:    print("Negative number")elif a>0:    print("Positive number")else:    print("Zero value")`

`number = 6if number<0:    print("Its negative")elif number>0:    print("its positive")    if number%2==0:        print("Even")        if number%3==0:            print("Divisible by 3 and 2 both")        else:            print("Its divisible by 2 only")    else:        print("Odd")        if number%3==0:            print("Divisible by 3 only")        else:            print("Its not divisible by either 2 or 3")else:    print("Its zero")##########  LOOP# FOR Loop#range(a,b,c): a = starting value (inclusive), b=ending value(exclusive), c=increment#range(2,8,2): 2,4,6#range(a,b): c is default 1#range(3,7): 3,4,5,6#range(3): a=0, c=1  => 0,1,2for i in range(3):    print(i)# While Loopch="n"while ch=='y':    print("I am in While")    ch=input("Input your choice: ")for j in range(5):    for i in range(5):        print("*",end=" ")    print()for j in range(5):    for i in range(j+1):        print("*",end=" ")    print()for j in range(5):    for i in range(5-j):        print("*",end=" ")    print()for j in range(5):    for i in range(5-j):        print("*",end=" ")    print()for j in range(5):    for i in range(5-j):        print("*",end=" ")    print()print("\n\n")for j in range(5):    for k in range(4-j):        print(" ",end="")    for i in range(j+1):        print("*",end=" ")    print()`
`choice = "y"while choice=='y' or choice=='Y':    print("Hello")    choice = input("Enter Y to continue: ")while True:    print("Hello")    choice = input("Enter Y to continue: ")    print("Hello 2")    if choice == 'B' or choice == 'b':        continue  #Take you to the beginning of loop    print("Hello 3")    if choice!='y' and choice!='Y':        break  #break which will throw you out of current loop    print("Hello 4")print("Hello 5")`
`val1 =input("Enter your name: ")  #reading input given by the userprint(val1)print(type(val1))marks1 = input("Enter your marks in subject 1: ")marks1 = int(marks1)marks2 = int(input("Enter your marks in subject 2: "))marks3 = int(input("Enter your marks in subject 3: "))sum = marks1 +marks2+marks3print("Total marks obtained is ",sum)avg = sum/3print(f"{val1} has scored a total of {sum} marks with an average of {avg:.2f}")#<class 'str'>   str()#<class 'int'>   int()#<class 'float'>  float()#<class 'complex'>  complex()#<class 'bool'>   bool()###############choice = input("Do you want milk (Y/N): ")if choice =='Y' or choice =='y':    print("Give milk")    print("So you want milk tea")print("Done")val1 = "Sachin Tendulkar"marks1 = input("Enter your marks in subject 1: ")marks1 = int(marks1)marks2 = int(input("Enter your marks in subject 2: "))marks3 = int(input("Enter your marks in subject 3: "))sum = marks1 +marks2+marks3print("Total marks obtained is ",sum)avg = sum/3print(f"{val1} has scored a total of {sum} marks with an average of {avg:.2f}")if avg >=90:    print("Congratulations, you won President Medal")#if avg >=40, Pass and its not then say Failif avg >=40:    print("Result: PASS")else:   #default condition , executed only when if is false    print("Result: FAIL")'''80 to 100: Grade A  - IF70 to 80: Grade B   - ELIF60 to 70: Grade C   - ELIF50 to 60: Grade D   - ELIF40 to 50: Grade E   - ELIF<40: Grade F   - ELSE'''#avg = 90if avg>=80:    print("Grade: A")elif avg>=70:    print("Grade: B")elif avg>=60:    print("Grade: C")elif avg>=50:    print("Grade: D")elif avg>=40:    print("Grade: E")else:    print("Grade: F")number = 11if number %2==0:    print("Its an even number")else:    print("Its an odd number")number = int(input("Enter a number: "))if number <0:    print("Its a negative number")elif number >0:    print("Its a positive number")    if number %2==0:        print("Its an even number")        if number %3 ==0:            print("Its divisible by both 2 and 3")    else:        print("Its an odd number")else:    print("Its Zero")number = 5if number %5==0 and number %3==0:    print("Number is divisible by both 5 and 3")else:    print("Its neither divisible 5 nor 3")if number %5==0:    if number%3 ==0:        print("Divisible by both 5 and 3")    else:        print("Divisible only by 5")else:    if number%3 ==0:        print("Divisible by only 3")    else:        print("Its neither divisible 5 nor 3")if number ==0:    print("Zero")else:    print("Its either positive or negative")# Loops : FOR - you know how many times (boil water for 2 min)#range(a,b,c): a is the starting value, b is the ending value minus 1 (UPTO), c increment#range(2,8,2): 2,4,6#range(2,5): 2 values these are a and b, c is default =1  ||  2,3,4#range(3) : 1 value indicate b, default a=0,c=1  ||   0,1,2#WAP to generate first 10 natural numbersfor i in range(10):    if i==9:        print(i)    else:        print(i, end=', ')#Loops: WHILE - you know until when (boil water till you see bubble)counter = -11while counter <=10:    print(counter)    counter+= 1   #  a = a X  5   =>  a X= 5# Sum of first 10 natural numberssum=0for i in range(1,11):    sum+=i  # sum = sum + iprint("Sum from For loop: ",sum)# Sum of first 10 natural numberssum=0counter = 1while counter <=10:    sum+=counter    counter+=1print("Sum from While loop: ",sum)`
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`str1 = 'hello'str2 = "hi"str3 = '''Hello there'''str4 = """Good evening"""print(str4[-1])print(str4[:4])print(str4[1:4])print(str4[-3:])print(str1.count('l'))print(str4.upper())print(str1.upper().isupper())num1 = input("Enter a number: ")print(num1)`
`#Listlist1 = [2,4,6,8.9,"Hello",True,[2,3,4]]print(type(list1))print(list1)print(type(list1[-1]))var = list1[-1]print(list1[-1][0])print(list1[-3:])print(len(list1[-1]))for i in list1:    print(i, end=" , ")print()l1 = [2,4,6,8]l2 = [1,3,5,7]print((l1+l2)*3)l1.append(19)print(l1)l1.insert(2,"Hello")l1.pop(0)  #index / positive to removel1.remove(19)  #value to removeprint(l1)l1[1] = 18print(l1)l11 = l1l21 = l1.copy()print("1")print("L1: ",l1)print("L11: ",l11)print("L21: ",l21)l11.append(66)l1.append(55)l21.append(66)print("2")print("L1: ",l1)print("L11: ",l11)print("L21: ",l21)l1.extend(l11)  # l1 = l1+l2print(l1)#l1.sort()l1.reverse()print(l1)print(l1.count(66))print(l1.index(8))t1 = tuple(l1)t1 = list(t1)t1 = (2,4,5)n1,n2,n3 = t1t1 = (3,)print(type(t1))t1 = (3)print(type(t1))dict1 = {55:"Sachin", "Name": "Cricket"}`
`word = "hello"guess = "ll"ind = 0word1 = word.replace("l","L",1)print(word1)for i in range(word.count(guess)):    ind = word.find(guess,ind)    print(ind)    ind=ind+1word3 = "How are you doing"l1 = word3.split("o")print(l1)word4 = "o".join(l1)print(word4)#Stringsword = "hEllo".lower()print(word)display_text = "* "*len(word)print(display_text)while True:    guess = input("Guess the character: ")    guess = guess[0].lower()    if guess.isalpha():        if guess in word:            ind = 0            for i in range(word.count(guess)):                ind = word.find(guess, ind)                #now time to reveal                #0 - 0, 1-2, 2-4                display_text = display_text[:ind*2] + guess+display_text[ind*2+1:]                ind = ind + 1            print(display_text)            if "*" not in display_text:                print("Congratulations!")                break        else:            print("Given character is not in the original word")    else:        print("Invalid character")#Listl1 = [2,4,6.5,"Hello",True,[2,4,6]]l1.append(11)l1.insert(1,"Good evening")l1.pop(0) #removes element from the given positionl1.remove(6.5) #valuel2 = l1l3 = l1.copyprint("Set 1: ")print("l1 : ",l1)print("l2 : ",l2)print("l3 : ",l3)print("Set 2: ")print("l1 : ",l1)print("l2 : ",l2)print("l3 : ",l3)print("######")'''2212202222nd December 2022'''month_txt = ["January","February","March","April","May","June","July","August",             "September","October","November","December"]dt_ending = ["st","nd","rd"]+["th"]*17 +["st","nd","rd"]+["th"]*7 +["st"]date_user = int(input("Enter Date: "))month_user = int(input("Enter month:"))year_user = input("Enter the year: ")display_txt = str(date_user) +dt_ending[date_user-1]+" " + month_txt[month_user-1]+" " +year_userprint(display_txt)l1 = [5,10,15,20,25,30]print(len(l1))sample = [[1,2,3,4,5],          [2,4,6,8,10],          [3,6,9,12,15]]`
`#dictionary: unordered collection mutablemain_dict = {}d1 = {"name":"sachin"}d2 = {"city":"mumbai"}main_dict.update(d1)main_dict.update(d2)key="sports"val="cricket"temp={key:val}main_dict.update(temp)main_dict2 = main_dictmain_dict3 = main_dict.copy()print("Set 1")print("Dict 1: ",main_dict)print("Dict 2: ",main_dict2)print("Dict 3: ",main_dict3)key="marks"val=[55,44,66,77,88]temp={key:val}main_dict.update(temp)print(main_dict)print("Set 1")print("Dict 1: ",main_dict)print("Dict 2: ",main_dict2)print("Dict 3: ",main_dict3)print("Set Mem Loc")print("Dict 1: ",id(main_dict))print("Dict 2: ",id(main_dict2))print("Dict 3: ",id(main_dict3))main_dict.pop('city')print("Dict 1: ",main_dict)main_dict.popitem()print("Dict 1: ",main_dict)#keysfor i in main_dict.keys():    print(i)#valuesfor i in main_dict.values():    print(i)#itemsfor i,j in main_dict.items():    print(i," : ",j)`
`# List functions### MAPlist1 = [1,3,5,7,9,11,13,15,17,19,21,23,25,27,29]#find cube of all these valuesresult = list(map(lambda x:x**3,list1))print("Result = ",result)### FILTERresult = filter(lambda x:x>=15,list1)print("Filtered values: ",list(result))### REDUCEfrom functools import reduceresult = reduce(lambda x,y:x+y,list1)print("Sum is ",result)result = reduce(lambda x,y:x+y,[1,2,3,4,5,6,7])print("Sum is ",result)# 1,2,3,4,5,6,7 =## 1. x=1, y=2 , x+y = 3## 2. x=3, y=3, x+y=6## 3. x=6, y=4, x+y = 10## 4. x=10, y=5 = 15## 5. x=15, y=6 = 21## 6. x=21,y=7 = 28#how to connect to the database from Python#SQLITE3 - installed on local machine, nobody can connect from outsideimport sqlite3con_str = sqlite3.connect("classnotes.db")cursor = con_str.cursor()q1 = '''Create table Notes(ID int primary key,description text,subject varchar(30))'''#cursor.execute(q1)q2 = '''Insert into Notes(ID, Description, Subject)values(2,"This is a sample Maths notes to perform sone action",'MATHS')'''#cursor.execute(q2)q4 = '''UPDATE Notes set subject='Science' where ID=2 '''cursor.execute(q4)q4 = '''DELETE From Notes where ID=1 '''cursor.execute(q4)con_str.commit()q3 = '''Select * from Notes'''recordset = cursor.execute(q3)#print(list(recordset))for i in recordset:    for j in i:        print(j,end="  ")    print()con_str.close()##########a=10b=10c =a/bprint("A/B = ",c)  #ZeroDivisionError: division by zeronum1 = 0num2 = 0try:    num1 = int(input("Enter a number: "))    num2 = int(input("Enter another number: "))except ValueError:    #print("We cant proceed further because input is not valid")    print("Invalid input, setting both the numbers to zero")finally:    sum = num1 + num2    print("Sum is ", sum)    print("Thank you for using this program. See you soon")#ValueError: invalid literal for int() with base 10: '8t'`