1.add two numbers
import os
os.system('clear')
#system('clear')
num1=input('first no:')
num2=input('second no:')
sm=num1+num2
print "the sum of ",num1,"and ",num2, "is" ,sm
2. Program to implement a dictionary
letters=input("Enter a string: ")
print letters
dt={}.fromkeys(letters,0)
for ch in letters:
if ch in dt:
dt[ch]=dt[ch]+1
print dt
"""
output
Enter a string: "apple"
apple
{'a': 1, 'p': 2, 'e': 1, 'l': 1}
"""
3. Fibonacci series
t1=0
t2=1
tn=0
dt={1:0,2:1}
l=input("limit:")
#print t1
#print t2
cnt=2
while cnt<l:
tn=t1+t2
#print tn
t1=t2
t2=tn
cnt =cnt+1
dt.setdefault(cnt,tn)
print dt
n=input("enter the nth value u want from fibonacci series ")
print dt[n]
"""
output
limit:7
{1: 0, 2: 1, 3: 1, 4: 2, 5: 3, 6: 5, 7: 8}
enter the nth value u want from fibonacci series 3
1
"""
4. Vowels in a String
letters="aeiou"
str=input("Enter a string:")
dt={}.fromkeys(letters,0)
for ch in str:
if ch in dt:
dt[ch]=dt[ch]+1
print dt
"""
output
Enter a string:"apple"
{'a': 1, 'i': 0, 'e': 1, 'u': 0, 'o': 0}
"""
5.Even or Odd
a=input('no:')
if a%2==0:
print "even"
else:
print "odd"
print "hi"
else :
print "hello"
"""if a%2!=0:
print "odd"""
6.Factorial of a number
n=input('n:')
fact=1
for i in range(1,n+1):
fact=fact*i
print fact
7.File Operations
f=open("tst.txt",'r+')
#print (f.read())
f1=open("dest.txt",'a+')
for ln in f:
#print(ln)
f1.write(ln)
f1.close()#other wise dont print to keyboard
f1=open("dest.txt",'r+')
print (f1.read())
8.Usage of Functions
def prnt(str):
print str
return
print prnt("hello")
9.Add two number using Functions
a=input("1no")
b=input("2no")
def ad():
c=a+b
return c
print ad()
10. Factorial using recursion
def refact(x):
if x==1:
return 1
else:
return(x*refact(x-1))
num=input("no:")
if num>=1:
print 'factorial is',refact(num)
11. Multiplication table
for i in range(1,10):
for j in range(1,10):
print i,'*',j,'=',i*j
print "************"
12. Check number is palindrome or not
n=input("num:")
w=n
rev=0
#steps in loop let dem do
while(n!=0):
rem=n%10
rev=rev*10+rem
n=n/10
print rev
if rev ==w:
print "paliandrome"
else:
print "not palindrome"
13. Check wethwe prime or not
num= input("no:")
if num>1:
for i in range(2,num):
if (num%i)==0:
print "not prime"
break
else:
print "prime"
14..Display prime numbers between two limits
lw = input("lw:")
up=input("up:")
for num in range(lw,up+1):
if num>1:
flag=0
for i in range(2,num):
if (num%i)==0:
flag=1
if flag==0:
print num
15.Diplay a pyramid
#a=10
for i in range(1,11):
for j in range(11,-i):
print " ",
for j in range(1,i):
print "*",
for i in range(i,0,-1):
print "&",
"""for s in range(a,1,-1):
print " ",
print "*",
print "\n"
a=a-1"""
print "\n"
16.Reverse a number
n=input("num:")
rev=0
#steps in loop let dem do
while(n!=0):
rem=n%10
rev=rev*10+rem
n=n/10
print rev
17. Sort a string in alphabetical order
word=input("Enter the string : ")
l=len(word)-1
for i in range(0,l):
for j in range(0,l):
if (word[i]>word[j]):
temp=word[i]
word[i]=word[j]
word[j]=temp
print word
18.Check whether String is palindrome or not
word=input("Enter the string : ")#string should enter in "" or ''
i=0
p=1
j=len(word)-1
while i<j:
if word[i]!=word[j]:
p=0
i=i+1
j=j-1
if p==1:
print "palindrome"
if p==0:
print "not palindrome"
19.Armstrong Number or not
n=input('Enter the number')
s=0
m=n
while(m>0):
r=m%10
s=s+(r**3)
m=m/10
if(s==n):
print 'Armstrong number'
else:
print 'Not Armstrong number'
'''OUTPUT
Enter the number 153
Armstrong number
'''
20.Sum of first n natural numbers
sum=0
i=1
n=input("Enter the limit:")
while i<=n:
num=input("Enter the number:")
sum=sum+num
i=i+1
print "sum is",sum
"""
OUTPUT
student@student-desktop:~/Desktop$ python natural.py
Enter the limit:7
Enter the number:1
Enter the number:2
Enter the number:3
Enter the number:4
Enter the number:5
Enter the number:6
Enter the number:7
sum is 28
"""
21.Perfect Square or not
num=input("enter the number")
i=1
while i<=num/2:
s=i**2
if s==num:
print "perfect square"
break
i+=1
else:
print "not a perfect square"
"""
OUTPUT
student@student-desktop:~/Desktop$ python perfect.py
enter the number 16
perfect square
"""
22.Sum of digits of a number
num=input("enter the number")
s=0
while(num>0):
r=num%10
s=s+r
num=num/10
print "sum of numbers",s
"""
OUTPUT
student@student-desktop:~/Desktop$ python squares.py
enter the number 14
sum of numbers 5
"""
def add(x,y):
print "Sum oif two numbers is",(x+y)
def sub(x,y):
print"Difference of two numbers is",(x-y)
def multi(x,y):
print"Product of two number is",(x*y)
def div(x,y):
print"Quotient is",(x/y)
x=input("Enter the value for x")
y=input("Enter the value for y")
z=raw_input("Enter your choice +,-,*,/: ")
if z=='addition':
add(x,y)
elif z=='subtraction':
sub(x,y)
elif z=='multiplication':
multi(x,y)
else:
div(x,y)
"""
OUTPUT
student@student-OptiPlex-3020:~/Desktop$ python calculator.py
Enter the value for x4
Enter the value for y5
Enter your choice +,-,*,/: +
Sum oif two numbers is 9
"""
24. Delete all vowels in a string
stri=raw_input("Enter the string : ")
v1="aeiou"
v2="AEIOU"
str2=""
str3=""
for i in range(len(stri)):
if stri[i] not in v1:
str2+=stri[i]
for k in range(len(str2)):
if str2[k] not in v2:
str3+=str2[k]
print str3
"""
OUTPUT
student@student-desktop:~/Desktop$ python delvow.py
Enter the string : ElEpHanT
lpHnT
"""
25. Delete Duplicate numbers in a list
l1=input("Enter the list")
l2=[]
for i in l1:
if i not in l2:
l2.append(i)
print l2
"""
OUTPUT
student@student-desktop:~/Desktop$ python duplicate.py
Enter the list[1,2,3,4,5,7,3,8,2,9,1,6,8]
[1, 2, 3, 4, 5, 7, 8, 9, 6]
"""
26. Largest amont 3 tuples
t1=input("Enter the 1st tuple: ")
t2=input("Enter the 2nd tuple: ")
t3=input("Enter the 3rd tuple: ")
if (cmp(t1,t2)==1):
if(cmp(t1,t3)==1):
print "t1 is the largest"
else:
print"t3 is the largest"
else:
if(cmp(t2,t3)==1):
print"t2 is the largest"
else:
print"t3 is the largest"
"""
OUTPUT
student@student-desktop:~/Desktop$ python largest.py
Enter the 1st tuple: (5,6,7)
Enter the 2nd tuple: (1,2,3)
Enter the 3rd tuple: (8,4,'ab')
t3 is the largest
"""
L=input("Enter the list: ")
num=input("Enter the element: ")
for i in range(len(L)):
if (L[i]==num):
print "Element is found"
break
else:
print "Element is not found"
"""
OUTPUT
student@student-OptiPlex-3020:~/Desktop$ python search.py
Enter the list: ['a','b',1,2,3,'c']
Enter the element: 'b'
Element is found
"""
28. SUM OF SERIES
**************************************************************
def series(n):
if n==0:
return 1
else:
return n*series(n-1)
i=input("enter the number")
sum=0
for n in range(1,i+1):
if n%2==0:
sum=sum-series(n)
else:
sum=sum+series(n)
print sum
"""
OUTPUT
student@student-desktop:~/Desktop$ python series.py
enter the number5
101
29. SORT THE LIST
**************************************************************
a=input('Enter the list :')
for i in range (len(a)):
for j in range (i+1,len(a)):
if a[i]>a[j]:
t=a[i]
a[i]=a[j]
a[j]=t
else:
print a
'''
OUTPUT
Enter the list :[2,1,5,3,6,9]
[1, 2, 3, 5, 6, 9]
'''
30.SWAP TWO NUMBERS USING FUNCTION
**************************************************************
def swap(a,b):
c=a
a=b
b=c
print "After swaping","a=",a,"b=",b
a=input("Enter the value for a: ")
b=input("Enter the value for b: ")
swap(a,b)
"""
OUTPUT
student@student-desktop:~/Desktop$ python swapfunct.py
Enter the value for a: 1
Enter the value for b: 2
After swaping a= 2 b= 1
"""
31. TRAVERSAL OF A TUPLE
**************************************************************
tup1=input("Enter the tuple")
for i in range(len(tup1)):
print tup1[i].upper()
"""
OUTPUT
student@student-OptiPlex-3020:~/Desktop$ python traversal_tuple.py
Enter the tuple ('a','d','g','e')
A
D
G
E
"""
32. TRAVERSAL OF A LIST
**************************************************************
l=input("Enter the list")
for i in range(len(l)):
print l[i]
"""
OUTPUT
student@student-desktop:~/Desktop$ python travsel.py
Enter the list[1,34,56,7.8,"ev"]
1
34
56
7.8
ev
"""
33.TO COUNT THE NUMBER OF VOWELS
**************************************************************
str=raw_input("Enter the string : ")
v1="aeiou"
v2="AEIOU"
for i in range(len(v1)):
count=0
for j in range(len(str)):
if str[j]==v1[i]:
count+=1
print v1[i]," count is : ",count
"""
OUTPUT
student@student-desktop:~/Desktop$ python vowel.py
Enter the string : fruit
a count is : 0
e count is : 0
i count is : 1
o count is : 0
u count is : 1
"""
34.ROOTS OF QUADRACTIC EQUATION *
**************************************************
a=input("Enter the coefficient of x^2: ")
b=input("Enter the coefficient of x: ")
c=input("Enter the constant: ")
d=((b*b-4*a*c)**1/2)
if (d==0):
x1=(-b+d)/2*a
x2=(-b-d)/2*a
print"Equation has equal roots",x1,x2
elif (d>0):
x1=(-b+d)/(2*a)
x2=(-b-d)/(2*a)
print"Equation has two unequal roots",x1,x2
else:
print"Equation has no real roots"
"""
OUTPUT
student@student-OptiPlex-3020:~/Desktop$ python eqn.py
Enter the coefficient of x^2: 10
Enter the coefficient of x: 10
Enter the constant: 5
Equation has no real roots
student@student-OptiPlex-3020:~/Desktop$ python eqn.py
Enter the coefficient of x^2: 1
Enter the coefficient of x: 4
Enter the constant: 4
Equation has equal roots -2 -2
"""
35. GRADE OF A STUDENT *
**************************************************
M1=input("Enter the mark OF M1: ")
M2=input("Enter the mark of M2: ")
M3=input("Enter the mark of M3: ")
T=300.00
D=M1+M2+M3
g=(D/T)*100.00
if (g>=90):
print "A grade"
elif (90<g>=80):
print "B grade"
elif (80<g>=70):
print "C grade"
elif (70<g>=60):
print "D grade"
else:
print "fail"
"""
Output
student@student-desktop:~/Desktop$ python grade.py
Enter the mark OF M1: 95.00
Enter the mark of M2: 85.00
Enter the mark of M3: 90.00
A grade
"""
36.* CHECK WHETHER LEAP YEAR OR NOT *
**************************************************
y=input("Enter the the year: ")
if (y%4==0):
if (y%100==0):
if(y%400==0):
print "Leap year"
else:
print "Not a leap year"
else:
print "Leap Year"
else:
print"Not a leap year"
"""
Output
student@student-desktop:~/Desktop$ python leap.py
Enter the the year: 1900
Not a leap year
"""
37. POSITVE,NEGATIVE OR ZERO *
**************************************************
a=input("enter the number:")
if (a>0):
print"a is positive"
elif (a<0):
print"a is negative"
else:
print"a=zero"
"""
Output
student@student-desktop:~/Desktop$ python positive.py
enter the number:2
a is positive
"""
38. USERNAME AND PASSWORD *
**************************************************
username=raw_input("Enter the username: ")
password=raw_input("Enter the password: ")
us="evan"
pa="ert"
if (username==us) & (password==pa):
print"Login successfully"
else:
print"Username and password are not correct"
"""
Output
student@student-desktop:~/Desktop$ python username.py
Enter the username: Fritzy
Enter the password: pn
Username and password are not correct
"""
39.DICTIONARY
**************************************************************
str=raw_input("Enter the string: ")
d={}
for i in str:
if i not in d:
d[i]=1
else:
d[i]+=1
print d
"""
OUTPUT
student@student-desktop:~/Desktop$ python dict1.py
Enter the string: tooth
{'h': 1, 't': 2, 'o': 2}
"""
40. READ AND WRITE A FILE
**************************************************************
f=open("file.txt","w")
str="hello\nhai"
f.write(str)
f=open("file.txt","r")
str1=f.read()
print str1
"""
OUTPUT
student@student-desktop:~/Desktop$ python file.py
hello
hai
"""
41. PICKLE AND UNPICKLE
**************************************************************
import pickle
f=open("file.txt","w")
l=[1,2,3,4]
pickle.dump(l,f)
l[3]=5
f.close()
import pickle
f=open("file.txt","r")
unpick=pickle.load(f)
for i in unpick:
print "i is",i
print"l is",l
"""
OUTPUT
student@student-desktop:~/Desktop$ python pic.py
i is 1
i is 2
i is 3
i is 4
l is [1, 2, 3, 5]
"""
42.FIBONACCI SEQUENCE USING RECURSION
////////////////////////////////////////////////////////////////////////'''
n=int(input("ENTER NUMBER OF TERMS\n"))
seq=""
def fib(n):
if n==1:
return 0
elif n==2:
return 1
elif n>2:
return fib(n-1)+fib(n-2)
if n<=0:
print "INVALID"
else:
i=1
while i<=n:
seq=seq+" "+str(fib(i))+", "
i=i+1
print seq
'''/ OUTPUT
//////////////////////////////////////////////////////////////////////////
ENTER NUMBER OF TERMS
13
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144,
ENTER NUMBER OF TERMS
-3
INVALID
43. ARMSTRONG NUMBER WITH FUNCTIONS
////////////////////////////////////////////////////////////////////////'''
def getcube(n):
sum=0
while n>0:
sum=sum+((n%10)**3)
n=n/10
else:
return sum
n=100
while n<=999:
if n==getcube(n):
print n
n=n+1
else:
n=n+1
'''/ OUTPUT
//////////////////////////////////////////////////////////////////////////
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