# 1. Write a program to accepts two integers and print their sum.

# Write a program to accepts two integers and print their sum.

a=int(input('Enter the first integer:'))
b=int(input('Enter the second integer:'))

Sum=a+b

print('The two integers are:', a, b)
print('The sum of two integers are:', Sum)

# 2. Write a program that accepts the radius of a circle and prints its area.

# 2.Write a program that accepts radius of a circle and prints its area.
Area=3.14*r**2
print('The area of the circle is:', Area)

# 3. Write a program that accepts base and height and calculate the area of a triangle.

#Write a program that accepts base and height and calculate the area of triangle

b=float(input('Enter the base of triangle:'))
h=float(input('Enter the height of triangle:'))

Area=(1/2)*b*h

print('The area of triangle is:', Area)

# 4.Write a program that inputs a student’s marks in three subjects (out of 100) and prints the percentage marks.

# Write a program that inputs a student’s marks in
# three subjects (out of 100)and prints the percentage marks

print('Enter the marks of three subject out of 100')
a=float(input('Enter the marks of first subject:'))
b=float(input('Enter the marks of second subject:'))
c=float(input('Enter the marks of third subject:'))

P=(a+b+c)/3
print('The percentage marks are:', P,'%')

# 5. Write a program to compute the area of square and triangle.

# Write a program to compute area of square and triangle.

a=float(input('Enter the value of side:'))

A=a**2
T=((3**0.5)/4)*a**2

print('The area of square is:', A)
print('The area of triangle is:', T)

# 6. Write a program to calculate simple interest.

# Write a program to calculate simple interest.

P=float(input('Enter the principal amount in : '))
R=float(input('Enter the rate of interest: '))
T=float(input('Enter the time in years: '))

SI=(P*R*T)/100

print('The simple interest is : ', SI)

# 7. Write a program to read two numbers and prints their quotient and reminder.

# Write a program to read two numbers and prints their quotient and reminder
a=float(input('Enter the dividend:'))
b=float(input('Enter the divisor:'))

Q=a//b
R=a%b

print('The quotient is:', Q)
print('The remainder is:', R)

# 8. Write a program to find whether a given number is even or odd.

# Write a program to find whether a given number is even or odd.

a=int(input('Enter the number:'))
if a%2==0:
print('The number is even')
else:
print('The number is odd')

# 9. Write a program to find the largest among the three integers.

# Write a program to find largest among three integers

a=int(input('Enter the first integer:'))
b=int(input('Enter the second integer:'))
c=int(input('Enter the third integer:'))

if a>b and a>c:
print(a, 'is the largest integer')
if b>a and b>c:
print(b, 'is the largest integer')
if c>a and c>b:
print(c, 'is the largest integer')

# 10. Write a program to find the lowest among the three integers.

# Write a program to find lowest among three integer.
a=int(input('Enter the first integer:'))
b=int(input('Enter the second integer:'))
c=int(input('Enter the third integer:'))

ifa<b and a<c:
print(a, 'is the smallest integer')
ifb<a and b<c:
print(b, 'is the smallest integer')
ifc<a and c<b:
print(c, 'is the smallest integer')

# 11. Write a program that accepts the length and breadth of the rectangle and calculate its area.

# Write a program to that accepts length and
# breadth of rectangle and calculate its area.

l=float(input('Enter the length of rectangle:'))
area=l*b

print('Rectangle Specifications')
print('Length=',l)
print('Area=', area)

# 12. Write a program that accepts weight in Kg and height in meters and calculate the BMI.

# Write a program that accepts weight in Kg
# and height in meters and calculate the BMI.

W = float(input('Enter the weight in Kg:'))
H = float(input('Enter height in meters:'))
BMI=W/(H**2)

print('BMI is:', BMI)

# 13. Write a program that reads the number n and prints the value of n², n³ and n⁴.

# Write a program that reads the number n
# and print the value of n², n³ and n⁴.

a=float(input('Enter the value of n:'))
b=a**2
c=a**3
d=a**4
print('The value of n² is:', b)
print('The value of n³ is:', c)
print('The value of n⁴ is:', d)

# 14. Write a program to accept the marks of five subjects and calculate the average marks.

# Write a program to accept the marks of five subjects
# and calculate the average marks.

a=float(input('Enter the marks of first subject:'))
b=float(input('Enter the marks of second subject:'))
c=float(input('Enter the marks of third subject:'))
d=float(input('Enter the marks of fourth subject:'))
e=float(input('Enter the marks of fifth subject:'))
Average=(a+b+c+d+e)/5
print('The average marks are:', Average)

# 15. Write a program to accept the height in cm and convert it into feet and inches.

# Write a program to accept the height in cm and
# convert it into feet and inches.

Feet=a*0.032
Inch=a*0.393

print('Your height in feet is:', Feet)
print('Your height in inch is:', Inch)

# 16. Write a program that accepts the age and print if one is eligible to vote or not.

# Write a program that accepts the age and
# print if one is eligible to vote or not.

if a>=18:
print('You are eligible to vote')
else:
print('You are not eligible to vote')

17. Write a program that accepts two numbers and check if the first number is fully divisible by the second number or not.

# Write a program that accepts two numbers and
# check if the first number is fully divisible by second number or not.

a=float(input('Enter the first number:'))
b=float(input('Enter the second number:'))
if a%b==0:
print('The first number is fully divisible by second number')
else:
print('The first number is not fully divisible by second number')

# 18. Write a program to read base, width and height of parallelogram and calculate its area and perimeter.

#Write a program to read base, width and height of
#parallelogram and calculate its area and perimeter.

b=float(input('Enter the base of parallelogram:'))
w=float(input('Enter the width of parallelogram:'))
h=float(input('Enter the height of parallelogram:'))

Area=b*h
Perimeter=2*(b+w)

print('The area of parallelogram is:', Area)
print('The perimeter of parallelogram is:', Perimeter)

19. Write a program to accept the year and check if it is a leap year or not.

# Write a program to accept the year and
# check if it is a leap year or not.

a=int(input('Enter the year:'))
if a%4==0:
print('This year is a leap year')
else:
print('This year is not a leap year')

# 20. Write a program to obtain x, y, z and calculate 4x⁴+3y³+9z+6π.

# Write a program to obtain x, y, z and calculate 4x⁴+3y³+9z+6π.

import math
print('To calculate 4x⁴+3y³+9z+6π')
x=float(input('Enter the number x:'))
y=float(input('Enter the number y:'))
z=float(input('Enter the number z:'))

b=(4*math.pow(x,4))+(3*math.pow(y,3))+(9*z)+(6*math.pi)
print('The result of the above expression is:',b)

# 21. Write a program to input a number and print its square if it is odd, otherwise print its square root.

# Write a program to input a number and print its
# square if it is odd, otherwise print its square root.

import math

x=float(input('Enter the number:'))

a=math.pow(x,2)
b=math.sqrt(x)
if x%2!=0:
print('The value of square is:',a)
else:
print('The value of square root is:',b)

# 22. Write a program to input a number and check whether it is positive, negative or zero.

# Write a program to input a number and check whether
# it is positive, negative or zero
.

a=float(input('Enter the number:'))

if a>=0:
if a==0:
print('The number is zero')
else:
print('The number is a positive number')
else:
print('The number is a negative number')

# 23. Write a program to input percentage marks of a student and find the grade as per the following criterion:

'''
Write a program to input percentage marks of a student and find the grade as per following criterion:
>=90             A
75-90            B
60-75            C
Below 60         D
'''

a=float(input('Enter the percentage marks:'))
if a>=90:
print('The student has got an A grade')
elif a>=75 and a<90:
print('The student has got a B grade')
elif a>=60 and a<75:
print('The student has got a C grade')
else:
print('The student has got a D grade')

# 24. Write a program to enter a number and check if it is a prime number or not.

# Write a program to enter a number and
# check if it is a prime number or not.

num=int(input('Enter the number:'))
for i in range(2,num//2+1):
if num%i==0:
print('It is not a prime no.')
break
else:
print('It is a prime number')

# 25. Write a program to display a menu for calculating the area of the circle or perimeter of the circle.

# Write a program to display a menu for calculating
# area of circle or perimeter of the circle.

r=float(input('Enter the radius of the circle:'))
print('1.Calculate perimeter')
print('2.Calculate area')
choice=int(input('Enter your choice (1 or 2):'))
if choice==1:
peri=2*3.14159*r
print('Perimeter of the circle with radius',r,':',peri)
else:
area=3.14159*r*r
print('Area of the circle of the radius',r,':',area)

# 26. Write a program that reads two numbers and an arithmetic operator and displays the computed result.

# Write a program that reads two numbers and an
# arithmetic operator and displays the computed result.

a=float(input('Enter the first number:'))
b=float(input('Enter the second number:'))
c=input('Enter the operator[/,*,+,-]:')
if c=='/':
r=a/b
elif c=='*':
r=a*b
elif c=='+':
r=a+b
elif c=='-':
r=a-b
else:
print('Invalid operator')
print(a,c,b,'=',r)

27. Write a program to print whether a given character is an uppercase or a lowercase character or a digit or any other character.

# Write a program to print whether a given character
# is an uppercase or a lowercase character or a digit or any other character.

ch=input('Enter a single character:')
if ch>='A'and ch<='Z':
print('You have entered an uppercase character.')
elif ch>='a'and ch<='z':
print('You have entered an lowercase character.')
elif ch>='0'and ch<='9':
print('You have entered a digit.')
else:
print('You have entered a special character.')

28. Write a program to calculate and print the roots of a quadratic equation ax²+bx+c=0.(a≠0)

# Write a program to calculate and print the roots of a

import math
print('For quadratic equation, ax²+bx+c=0,enter coefficents below')
a=int(input('Enter a:'))
b=int(input('Enter b:'))
c=int(input('Enter c:'))
if a==0:
print('Value of a should not be zero')
print('Aborting!!')
else:
d=b*b-4*a*c
if d>0:
root1=(-b+math.sqrt(d))/(2*a)
root2=(-b-math.sqrt(d))/(2*a)
print('Roots are real and unequal')
print('Root1=',root1,',Root2=',root2)
elif d==0:
root1=-b/2*a
print('Roots are real and equal')
print('Root1=',root1,',Root2=',root1)
else:
print('Roots are complex and imaginary')

29. Write a program to print the sum of natural numbers between 1 to 7. Print the sum progressively i.e. after adding each natural number, a print sum so far.

# Write a program to print the sum of natural numbers between 1 to 20.
# Print the sum progressively i.e. after adding each natural number,
# print sum so far.

Sum=0
for n in range(1,21):
Sum+=n
print('Sum of natural numbers <=',n,'is',Sum)

30. Write a program to calculate the factorial of a number.

# Write a program to calculate the factorial of a number.

num=int(input('Enter a number:'))
fact=1
a=1
while a<=num:
fact*=a
a+=1
print('The factorial of',num,'is',fact)

31. Write a program to create a triangle of stars using a nested loop.

# Write a program to create a triangle of stars using nested loop.

for i in range(1,6):
print()
for j in range(1,i):
print('*',end=' ')

32. Write a Python script to print Fibonacci series’ first 20 elements.

# Write a Python script to print Fibonacci series’ first 10 elements.

first=0
second=1
print(first, end=' ')
print(second,end=' ')
for a in range(1,9):
third=first+second
print(third,end=' ')
first,second=second,third

33. Write a program to read an integer>1000 and reverse the number.

# Write a program to read an integer>1000 and reverse the number.

num=int(input('Enter a number (>1000):'))
tnum=num
reverse=0
while tnum>0:
digit=tnum%10
reverse=reverse*10+digit
tnum=tnum//10
print('Reverse of',num,'is',reverse)

34. Input three angles and determine if they form a triangle or not.

# Input three angles and determine if they form a triangle or not.

angle1=angle2=angle3=0
angle1=float(input('Enter the first angle:'))
angle2=float(input('Enter the second angle:'))
angle3=float(input('Enter the third angle:'))

if angle1+angle2+angle3==180:
print('The angles form a triangle')
else:
print('The angles do not form a triangle')

35. Write a Python script that displays the first ten Mersenne numbers.

# Write a Python script that displays first ten Mersenne numbers.
print('First 10 Mersenne numbers are:')
for a in range(1,11):
mersnum=2**a-1
print(mersnum,end=' ')
print()

36. Write a Python script that displays the first ten Mersenne numbers and displays ‘Prime’ next to Mersenne Prime Numbers.

# Write a Python script that displays first ten
# Mersenne numbers and displays ‘Prime’ next to Mersenne Prime Numbers.

for a in range(1,21):
mersnum=2**a-1
mid=mersnum//2+1
for b in range(2,mid):
if mersnum%b==0:
print(mersnum)
break
else:
print(mersnum,'\tPrime')

# 37. Write a program to calculate BMI and print the nutritional status as per the following table:

'''

# Write a program to calculate BMI and print
# the nutritional status as per following table:
Nutritional     WHO criteria

Status         (BMI cut-off)
Underweight         <18.5
Normal            18.5-24.9
Overweight        25-29.9
Obese               ≥30
'''

w=float(input('Enter the weight in kgs:'))
h=float(input('Enter the height in meters:'))
BMI=w/h**2
print('BMI is',BMI,end='')
if BMI<18.5:
print('...Underweight')
elif BMI>=18.5 and BMI<24.9:
print('...Normal')
elif BMI>=25 and BMI<29.9:
print('...Overweight')
else:
print('...Obese')

38. Write a python script to print the following pattern.

1

1    3

1    3     5

1    3     5     7

# Write python script to print the following pattern.
'''

1 3
1 3 5
1 3 5 7
'''

for a in range(3,10,2):
print()
for b in range(1,a,2):
print(b, end=' ')
print()

39. Write a program to find the sum of the series :

s=1+x+x ²+x ³+x ⁴…+x ⁿ

# Write a program to find sum of series : s=1+x+x²+x³+x⁴…+xⁿ

x=float(input('Enter the value of x:'))
n=int(input('Enter the value of n (for x**n):'))
s=0
for a in range(n+1):
s+=x**a
print('Sum of first' ,n,'terms:',s)

40. Write a python script to input two numbers and print their LCM and HCF.

#40.Write a python script to input two numbers
#and print their lcm and hcf.

x=int(input('Enter the first number:'))
y=int(input('Enter the second number:'))
if x>y:
smaller=y
else:
smaller=x
for i in range(1,smaller+1):
if x%i==0 and y%i==0:
hcf=i
lcm=(x*y)/hcf
print('The HCF of',x,'and',y,'is:',hcf)
print('The LCM of',x,'and',y,'is:',lcm)

41. Write a python script to calculate the sum of the following series:

S=(1)+(1+2)+(1+2+3)+……+(1+2+3+….+n)

# Write a python script to calculate the
# sum of the following series: S=(1)+(1+2)+(1+2+3)+……+(1+2+3+….+n)

Sum=0
n=int(input('How many terms?'))
for a in range(2,n+2):
term=0
for b in range(1,a):
term+=b
print('Term',(a-1),':',term)
Sum+=term
print('Sum of',n,'terms is:',Sum)

42. Write a program to print the following using a single loop (no nested loops)

1

1    1

1    1    1

1    1    1    1

1    1    1    1    1

'''
42.Write a program to print the following using a single loop (no nested loops)
1
11
111
1111
11111
'''

n=1
for a in range(5):
print(n,end = ' ')
print()
n=n*10+1

# 4

' ' '

Write a program to print a pattern like:
4 3 2 1
4 3 2
4 3
4
'''

for i in range(4):
for j in range(4,i,-1):
print(j,end=' ')
else:
print()

44. A program that reads a line and prints its statistics like:

• The number of uppercase letters:

• The number of lowercase letters:

• The number of alphabets:

• The number of digits:

#Program that reads a line and print its statistics like:
'''
Number of uppercase letters:
Number of lowercase letters:
Number of alphabets:
Number of digits:
'''

line=input('Enter a line:')
lowercount=uppercount=0
digitcount=alphacount=0

for a in line:
if a.islower():
lowercount+=1
elif a.isupper():
uppercount+=1
elif a.isdigit():
digitcount+=1
if a.isalpha():
alphacount+=1

print('Number of uppercase letters are:',uppercount)
print('Number of lowercase letters are:',lowercount)
print('Number of alphabets are:',alphacount)
print('Number of digits are:',digitcount)

45. Write a program that reads a line and a substring and displays the number of occurrences of the given substring in the line.

#Write a program that reads a line and a substring
#and displays the number of occurrences of the given substring in the line.

line=input('Enter line:')
sub=input('Enter substring:')
length=len(line)
lensub=len(sub)
start=count=0
end=length

while True:
pos=line.find(sub,start,end)
if pos!=-1:
count+=1
start=pos+lensub
else:
break
if start>=length:
break
print('No. of occurences of',sub,':',count)

46. Write a program that takes a string with multiple words and then capitalizes the first letter of each word and forms a new string out of it.

#Write a program that takes a string with multiple
#words and then capitalizes the first letter of each word
#and forms a new string out of it.

string=input('Enter a string:')
length=len(string)
a=0
end=length
string2=''

while a<length:
if a==0:
string2+=string.upper()
a+=1
elif(string[a]==' ' and string[a+1]!=' '):
string2+=string[a]
string2+=string[a+1].upper()
a+=2
elif (string[a]==',' and string[a+1]!=','):
string2+=string[a]
string2+=string[a+1].upper()
a+=2
else:
string2+=string[a]
a+=1
print('Original string:',string)
print('Capitalized words string:',string2)

47. Write a program that reads a string and checks whether it is a palindrome string or not.

#Write a program that reads a string and
#checks whether it is a palindrome string or not.

string=input('Enter a string:')
length=len(string)
mid=length//2
rev=-1
for a in range(mid):
if string[a]==string[rev]:
print(string,'is a palindrome.')
break
else:
print(stri

48. Write a program that reads a string and displays the longest substring of the given string having just the consonants.

#Write a program that reads a string and displays
#the longest substring of the given string having
#just the consonants.

string=input('Enter a string:')
length=len(string)
maxlength=0
maxsub=''
sub=''
lensub=0
for a in range(length):
if string[a] in 'aeiou' or string[a] in 'AEIOU':
if lensub>maxlength:
maxsub=sub
maxlength=lensub
sub=''
lensub=0
else:
sub+=string[a]
lensub=len(sub)
a+=1
print('Maximum length consonant substring is:',maxsub,end=' ')
print('with',maxlength,'characters')

49. Write a program that reads a string and then prints a string that capitalizes every other letter in the string.

# Write a program that reads a string and then
# prints a string that capitalizes every other letter in the string.

string=input('Enter a string:')
length=len(string)
print('Original string:',string)
string2=''
for a in range(0,length,2):
string2+=string[a]
if a<length-1:
string2+=string[a+1].upper()
print('Alternatively capitalized string:',string2)

50. Write a program that reads the email id of a person in the form of a string and ensures that it belongs to domain @edupillar.com (Assumption: no invalid characters are there in email-id)

# Write a program that reads the email id of a person
# in the form of a string and ensures that it belongs to
# domain @learnpython4cbse.com(Assumption:no invalid characters
# are there in email-id)

domain='@learnpython4cbse.com'
ledo=len(domain)       #ledo=length of domain
lema=len(email)         #lema=length of email
sub=email[lema-ledo:]

if sub==domain:
if ledo!=lema:
print('It is valid email id')
else:
print('This is invalid email id- contains just the domain name')
else:
print('This email-d is either not valid or belongs to some other domain')

51. WAP to remove all odd numbers from the given list.

# WAP to remove all odd numbers from the given list.

L= [2, 7,12, 5,10,15,23]
for i in L:
if i%2!=0:
L.remove (i)
print (L)

52. WAP to display the second largest element of a given list.

# WAP to display second largest element of a given list.

L= [ 41, 6, 9, 13,4, 23]
m=max (L)
secmax=L
for i in range(1, len(L) ) :
if L[i]>secmax and L[i]<m:
secmax=L[i]
print ('The second largest element is: ',secmax)

53. WAP to display frequencies of all the elements of a list.

# WAP to display frequencies of all the elements of a list.
L= [3, 21, 5, 6, 3, 8, 21, 6]
L1= [ ]
L2= [ ]
print ('Element' , ' \t' , 'frequency' )

for i in L:
if i not in L2:
x=L.count(i)
L1.append(x)
L2.append(i)

for i in range(len(L1)):
print (L2[i],'\t\t\t',L1[i])

54. WAP in Python to find and display the sum of all the values which are ending with 3 from a list.

# WAP in Python to find and display the sum of all the values which are ending with 3 from a list.

L=[33,13,92,99,3,12]
sum=0
x=len (L)
for i in range(0,x):
if type (L [i])== int:
if L[i]%10==3:
sum+=L[i]
print (s

55. WAP to search an element from the given list.

# WAP to search an element from the list
L=eval(input("Enter the elements:"))
n=len(L)
flag =1
s = int(input("Enter the element to be searched:"))
for i in range(0,n-1):
if(L[i]==s):
flag=1
break;
else:
flag=0

if flag==1:
print("Element found")
else:

56. WAP to accept values from user and create a tuple.

# WAP to accept values from user and create a tuple.
t=tuple()
n=int(input("How many values you want to enter: "))
for i in range(n):
a=input("Enter Number: ")
t=t+(a,)
print("Entered Numbers are: ")
print(t)

57. Write a program to input the total number of sections and stream name in 11th class and display all information on the output screen.

# WAP to input any two tuples and swap their values

t1 = tuple()
n = int (input("Total no of values in First tuple: "))
for i in range(n):
a = input("Enter Elements : ")
t1 = t1 + (a,)
t2 = tuple()
m = int (input("Total no of values in Second tuple: "))
for i in range(m):
a = input("Enter Elements : ")
t2 = t2 + (a,)
print("First Tuple : ")
print(t1)
print("Second Tuple : ")
print(t2)

t1,t2 = t2, t1

print("After Swapping: ")
print("First Tuple : ")
print(t1)
print("Second Tuple : ")
print(t2)

58. Write a program to input the total number of sections and

# Write a program to input total number of sections and
#stream name in 11th class and display all information
#on the output screen.

classxi=dict()
n=int(input("Enter total number of section in xi class: "))
i=1
while i<=n:
a=input("Enter Section: ")
b=input ("Enter stream name: ")
classxi[i]=b
i=i+1
print ("Class",'\t''Section''\t''Stream name')
for i in classxi:
print ("XI",'\t',i,'\t',classxi[i])

59. WAP to store students’ details like admission number, roll number, name and percentage in a dictionary and display information on the basis of admission number.

# WAP to store students’ details like admission number, roll number,
# name and percentage in a dictionary and display information on the

record = dict ()
i=1
n= int (input ("How many records u want to enter: "))
while(i<=n):
roll = input("Enter Roll Number: ")
name = input("Enter Name :")
perc = float(input("Enter Percentage : "))
t = (roll,name, perc)
i = i + 1
Nkey = record.keys()
for i in Nkey:
r = record[i]
print("Roll No\t", "Name\t", "Percentage\t")
for j in r:
print(j, end = "\t")

60. Write a Python program to remove an item from a tuple.

# Write a Python program to remove an item from a tuple.

#create a tuple
tuplex = "l","e","a","r","n","p","y","t","h","o","n","4","c","b","s","e"
print("Tuple Before Removing an item")
print(tuplex)
#converting the tuple to list
listx = list(tuplex)
#use different ways to remove an item of the list
listx.remove("4")
#converting the tuple to list
tuplex = tuple(listx)
print("\nTuple After Removing an item '4'")
print(tuplex)

# 61. Write a program to input n numbers from the user. Store these numbers in a tuple. Print the maximum, minimum, sum and mean of number from this tuple.

# Write a program to input n numbers from the user.
# Store these numbers in a tuple. Print the maximum,
# minimum, sum and mean of number from this tuple.

numbers = tuple() #create an empty tuple 'numbers'
n = int(input("How many numbers you want to enter?: "))
print("Enter any ",n," numbers")
for i in range(0,n):
num = int(input())
#it will assign numbers entered by user to tuple 'numbers'
numbers = numbers +(num,)
print('\nThe numbers in the tuple are:')
print(numbers)
print("\nThe maximum number is: ")
print(max(numbers))
print("The minimum number is: ")
print(min(numbers))
print("The sum of numbers is: ")
print(sum(numbers))
print("The mean of numbers is: ")
mean = sum(numbers)/(i+1)
print(mean)
ele=int(input("Enter the element to be searched: "))
if ele in numbers:
print("Element found")
else: