PYTHON PROGRAMMING EXAMPLES

Python Free Tutorial
WRITE A PROGRAM TO CHECK PRIME NUMBERS
 >>> a = int (input("enter a number : "))
>>> c = 0
>>> if (a<1):
        print("invalid input ! Try next number ")
>>> if(a==1):
        print ("1 is not prime")
>>> else:
        for i in range(2,a,1):
            if (a%i==0):
                c=1
        if (c==0):
            print(a," is prime")
        else:
            print(a," is not prime")

Output:
enter a number : 9
9  is not prime
WRITE A PROGRAM TO FIND FIBONACCI SERIES
# print fibonacci series
>>> a = 1
>>> b = 0
>>> n = int(input("how many fibonacci series ?? "))
>>> while (n>=1):
        c = a+b
        a = b
        b = c
        print (c, end=",")
        n=n-1

Output:
how many fibonacci series ?? 5
1,1,2,3,5

# print nth fibonacci series value
>>> a = 1
>>> b = 0
>>> n = int(input("how many fibonacci series ?? "))
>>> while (n>=1):
        c = a+b
        a = b
        b = c
        n=n-1
>>> print (c,"is the required output")

Output:
how many fibonacci series ?? 6
8 is the required output
WRITE A PROGRAM TO CHECK ARMSTRONG NUMBER
 >>> #153 is an Armstrong number.
>>> #1*1*1 + 5*5*5 + 3*3*3 = 153
>>> sum = 0
>>> c = 0
>>> num = int(input("enter a number : "))
>>> temp = num
>>> while(num>0):               # to find length of number i.e. 153= 3
        a = num%10
        num= num//10
        c=c+1
>>> num = temp
>>> while(num>0):              # 1*1*1+5*5*5+3*3*3 = 153
        a = num%10
        num= (num-a)/10
        sum = int(sum + a**c)
>>> if (sum == temp):
        print("Armstrong Number")
>>> else:
        print (" Not an armstrong number")

Output:
enter a number : 153
Armstrong Number

WRITE A PROGRAM TO FIND HCF OF TWO NUMBER
 >>> num1 = int (input ("enter first number : "))
>>> num2 = int (input ("enter second number : "))
>>> if num1 < num2:
        small = num1
>>> else:
        small = num2
>>> for i in range(1, small+1):
        if((num1 % i == 0) and (num2 % i == 0)):
            hcf = i
>>> print(" HCF or GCD of ",num1,"&", num2,"is",hcf)

Output:
 enter first number : 3
enter second number : 5
 HCF or GCD of  3 & 5 is 1
WRITE A PROGRAM TO FIND LCM OF TWO NUMBER
>>> num1 = int (input ("enter first number : "))
>>> num2 = int (input ("enter second number : "))
>>> if num1 < num2:
        small = num1
>>> else:
        small = num2
>>> for i in range(1, small+1):
        if((num1 % i == 0) and (num2 % i == 0)):
            hcf = i
>>> lcm = int ((num1*num2)/hcf)
>>> print(" LCM of ",num1,"&", num2,"is",lcm)

Output:
enter first number : 4
enter second number : 8
 LCM of  4 & 8 is 8

WRITE A PROGRAM TO FIND FACTOR OF A NUMBER
# 25= 5*5
>>> a = int(input("enter a number : "))
>>> for i in range(2,a):
        for j in range (2,a+1):
            if (a%j==0):
                print (j,end=",")
                break
        a = int(a/j)

Output:
enter a number : 4
2,2
WRITE A NUMBER TO FIND FACTORIAL OF A NUMBER
>>> # 5! = 5*4*3*2*1
>>> a = int(input("enter a number : "))
>>> c = 1
>>> if (a==0):
        print (" factorial of 0 is 1 ")
>>> else:
        for i in range(1,a+1):
            c=c*i
>>> print ("\n factorial of ",a,"is",c)

Output:
enter a number : 4
factorial of  4 is 24
WRITE A PROGRAM TO PRINT ALL VOWELS OF STRING
>>> a = str(input("enter a string ")).lower()
>>> b = len(a)
>>> c = 0
>>> while (c<=b-1):
        if a[c]=='a' or a[c]=='e' or a[c]=='i' or a[c]=='o' or a[c]=='u' :
            print(a[c])
        c=c+1

Output:
enter a string Diwas
i
a

WRITE A PROGRAM TO CHECK PALINDROME STRING
>>> a = str(input("enter a string : "))
>>> b = (a[::-1])
>>> if (a==b):
        print("Palindrome number")
>>> else:
        print(" Not Palindrome number")

Output:
 enter a string : sawid
 Not Palindrome number
WRITE A PROGRAM TO SORT WORDS IN ALPHABETICAL ORDER
>>> a = "apple cow dog ant"
>>> a = a.split()
>>> a.sort()
>>> for word in a:
        print(word)

Output:
ant
apple
cow
dog
WRITE A PROGRAM TO FIND SUM OF ITEMS OF LIST
>>> a = [1,2,3,4,5]
>>> sum = 0
>>> for i in a:
        sum = sum + i
>>> print (" sum of items in list is : ",sum)

Output:
sum of items in list is :  15

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