Learning Python - Day 2

On day 1, we had already assigned value to the variables like a and b. Today we would be inputing values for variables.

a=int(input("Enter 1st number"))
b=int(input("Enter 2nd number"))

c=a+b
print("Sum=",c)

run the function CTL+shift+fn+F10

Enter 1st number7

Enter 2nd number8

Sum= 15

Swapping of 2 Numbers

To Swap 2 numbers python uses the formula

a,b=b,a

Other programming langauages uses formula for swapping

t=a

a=b

b=t

or a=atb

b-aib

c=a-b

example

a=int(input("Enter 1st number"))
b=int(input("Enter 2nd number"))

print("B'for swaping a=",a,"b=",b)

a,b=b,a
print("After swaping a=",a,"b=",b)

run the function CTL+shift+fn+F10

Enter 1st number7

Enter 2nd number8

B'for swaping a= 7 b= 8

After swaping a= 8 b= 7

CONDITIONAL STATEMENTS

n=int(input(“Enter a Number”))

if (n % 2 == 0):
    print(n,"is even")
else:
    print(n,"is odd")

run the function CTL+shift+fn+F10

Enter a number19

19 is odd

Example

a=int(input("Enter 1st number"))
b=int(input("Enter 2nd number"))

if(a==b):

       print("equal no.")
else:
    print("not equal no.")

run the function CTL+shift+fn+F10

Enter 1st number10

Enter 2nd number90

not equal no.

EXAMPLE

a=int(input("Enter 1st number"))
b=int(input("Enter 2nd number"))
if(a>b):
    print("a>b")
elif(b>a):
    print("b>a")
else:
    print("Equal")

run the function CTL+shift+fn+F10

Enter 1st number10

Enter 2nd number98

b>a

EXAMPLE

a=int(input("Enter 1st number"))
b=int(input("Enter 2nd number"))
c=int(input("Enter 3rd number"))
if(a>b and a>c):
    print(a,"is largest")
elif(b>a and b>c):
    print(b,"is largest")
elif(c>a and c>b):
    print(c,"is largest")
else:
    print("cant find the largest one")

run the function CTL+shift+fn+F10

Enter 1st number23

Enter 2nd number37

Enter 3rd number45

45 is largest

EXAMPLE

print("enter 5 subject marks")
a=int(input())
b=int(input())
c=int(input())
d=int(input())
e=int(input())
avg=(a+b+c+d+e)/5
if(avg>60):
    print("1st Division")
elif(avg>=45):
    print("2nd Division")
elif(avg>=30):
    print("3rd division")

else:
    print("Fail")

run the function CTL+shift+fn+F10

enter 5 subject marks

10

20

30

40

50

3rd division

EXAMPLE

Electricity Bill generation

Unit

0-100 =>4Rs/U

101-200=>5Rs/u

201-400=>6Rs/u

401-above=>7Rs/u

Fixed Charges=150

u=int(input("Enter consumed units"))
amt=0
fc=150
if(u<=100):
    amt=u*100
elif(u<=200):
    amt=100*4+(u-100)*5
elif(u<=400):
    amt=100*4+100*5+(u-200)*6
else:
    amt=100*4+100*5+200*6+(u-400)*7
'''t_amt=amt+fc
print("Total bill=",t_amt)'''

if(u<=200):
    t_amt=0
else:
    t_amt=amt+fc
print("Total Bill=",t_amt)

run the function CTL+shift+fn+F10

Enter consumed units300

Total Bill= 1650

EXAMPLE

Menu Driven program lets say Calculator

a=int(input("enter 1st number"))
b=int(input("enter 2nd number"))
print("Press 1-add 2-sub, 3-mod")
c=int(input())
if(c==1):
    print("sum=",(a+b))
elif(c==2):
    print("sub=",(a-b))
elif(c==3):
    print("mod=",(axb))
else:
    print("wrong choice")

run the function CTL+shift+fn+F10

enter 1st number8

enter 2nd number9

Press 1-add 2-sub, 3-mod

1

sum= 17

Learning Python- Day 3