##### Django Learning with Jeswanth

## BASIC INFORMATION

For Basic information like installation, software to use, history, refer this link:

print(‘Hello There’);print(“How are you?”)

print(5+3);

print ( “5+3=”,5+3,“and 6*2 =”, 6*2 )

# 5 is constant – value will remain 5

# x,y – their value can change – variables

# x independent variable, we can put any value

# y is dependent variable (on x), it can take multiple values but that depends on x

#calculate area and perimeter of a rectangle

l=50

b=85

#input values

# input – process (formula) – output (display the result)

area = l * b

perimeter = 2*(l+b)

print(“Rectangle with length”,l,“and breadth”,b,“has an area of”,area,“and perimeter of”,perimeter)

# f-string – formatting the string

print(f”Rectangle with length {l} and breadth {b} has an area of {area} and perimeter of {perimeter}“)

#calculate area and circumference of a circle

#independent variable here is radius

r = 13

area = 3.14 * r * r #pi is constant value 3.14

c = 2*3.14*r

#area and c are dependent variables

print(“Circle with radius”,r,“will have area of”,area,“and circumference of”,c)

print(f”Circle with radius {r} will have area of {area:.1f} and circumference of {c:.4f}“)

name,team,pos=“Virat”,“India”,“Captain”

print(f”Player’s name is {name:<10} from the team {team:^10} and represents as {pos:>15} at the event.”)

name,team,pos=“Manbgwabe”,“Zimbabwe”,“Wicket-Keeper”

print(f”Player’s name is {name:<10} from the team {team:^10} and represents as {pos:>15} at the event.”)

#numeric data types – int, float n complex

var1 = 50 #int – integer, numbers without decimal point

print(type(var1)) #type() – will give the type of the data that is stored

var1 = 50.0 #float

print(type(var1))

var1 = 5j # complex

# square root of -1 : i (in python we say j)

print(type(var1))

print(5j * 5j)

#text type – string (str)

”’ This is a

multi line

comment in python”’

var1 =‘5’

print(type(var1)) #<class ‘str’>

var1 = True #bool – True or False

print(type(var1))

#arithematic

val1, val2 = 20,3

print(val1 + val2) #adding

print(val1 – val2) #subtracting

print(val1 * val2) #multiplying

print(val1 / val2) #dividing – gives a float value

print(val1 // val2) # integer division – gives integer value

print(val1 ** val2) #power

print(val1 % val2) #mod – remainder

# 20/3 = 6 2/3

#conditional / relational operators: > < >= <= == !=

# output: True or False

val1, val2,val3 = 20,3,20

print(val1 > val2) #True

print(val1 >= val3) #T

print(val1 > val3) # F

print(val1 < val3) #

print(val1 <= val3) #T

print(val1 == val3)

print(val1 != val3)

# logical operator: and or not

#input is boolean and output is also boolean

print(False and False)

print(False and True)

print(True and False)

print(True and True)

print(“===============”)

print(False or False)

print(False or True)

print(True or False)

print(True or True)

print(not True)

print(not False)

print(“========”)

val1, val2,val3 = 20,3,20

print(val1 >= val3 and val1 > val3 or val1 < val3 and val1 <= val3 or val1 == val3)

# T

num= 0

if num>0:

print(“Positive”)

elif num<0:

print(“Negative”)

else:

pass

print(“Thank you”)

####

avg =75

#avg>=85: Grade A, 70-85: Grade B, 60 to 70: Grade C, 50-60: D, <50: E

# if avg>=50: You have passed!

if avg>=50:

print(“You’ve passed!”)

if avg >= 70:

print(“Grade A”)

if avg>=90:

print(“You win special award”)

elif avg >= 85:

print(“Grade B”)

elif avg >= 60:

print(“Grade C”)

else:

print(“Grade D”)

else:

print(“You’ve not passed!”)

print(“Grade E”)

#LOOPS – repeating a block of code

## FOR Loop: used when you know how many times to execute a code

## WHILE Loop: beforehand you are not sure how many times but repeat based on some condition

# while:

# range(=start, < end, =increment) range(3,9,2): 3,5,7

for counter in range(3,9,2):

print(“HELLO, The counter value is”,counter)

##

for i in range(1,101): #when increment is not given, default value is 1

print(i)

#Generate even numbers from 2 to 100 (both inclusive)

n=12

for i in range(n): #when start number is not given, default value is zero

print(“* “,end=“”)

print()

”’

* * * * * * *

* * * * * * *

* * * * * * *

* * * * * * *

* * * * * * *

* * * * * * *

* * * * * * *

”’

for j in range(n):

for i in range(n):

print(“* “,end=“”)

print()

”’

*

* *

* * *

* * * *

”’

for j in range(n):

for i in range(j+1):

print(“* “,end=“”)

print()

”’

* * * *

* * *

* *

*

”’

for j in range(n):

for i in range(n-j):

print(“* “,end=“”)

print()

”’

* * * *

*

*

* * * *

”’

for j in range(n):

if j==0 or j==n-1:

for i in range(n):

print(“* “,end=“”)

print()

else:

for k in range(n-j-1):

print(” “,end=” “)

print(“*”)

#while

cont = “y”

while cont==“y”:

print(“Hello from While”)

cont = input(“Do you want to continue: hit y for yes anyother key for no:”)