User Input and Type Casting: input() (takes the value from the user at the run time as a string), int(), float(), eval()(convert all the numbers).

a = input("enter the value a")
b = input("enter the value b")
print(a + b)  # it will concatenate the value as it is taking string value

a = int(input("enter the value a"))
b = int(input("enter the value b"))
print(a + b)

a = eval(input("enter the value a"))  # converts binary as well in an integer value
b = eval(input("enter the value b"))
print(a + b)

Conditional statements: If[condition]: [statement to be execute]

a = int(input("enter the value a"))
if a%2==0:
	print (a, "is an even number.") #indentation is must in if condition, level of the statements should be the same
else:
	print(a, "is an odd number.")

if elif else statement:

per=int(input("enter the value"))
if per>= 60:
	print("First Div")
elif per>=45:
	print("Second Div")
elif per>= 30:
	print("Pass")
else:
	print("Fail")

Calculator

a = int(input("Enter the value to calculate"))
b = int(input("enter the value to calculate"))
cal = input("add: +,sub: -, div: /,mul: * ")
if cal == "+":
	print(a + b)
elif cal == "-":
	print(a - b)
elif cal == "/":
	print(a / b)
elif cal == "*":
	print(a * b)
else:
	print("invalid input")

LOOP: For and While, Range function is used in for loop.

Range: range(5) start with 0 and condition less than the range value (0,1,2,3,4) range (1,6) start with 1(1,2,3,4,5) 1 less than the end range value range (1,6,2): start with 1, end 1 less than 6 (2nd value), and increment with 2, that is: - 1,3,5

for n in range(5):
	print(n)
for n in range(2,6):
	print(n)
for n in range(2,22,2):
	print(n)
for a in range(1,11):
	print("2 x",a,"= ")

Reverse

for n in range(10,0,-1):
	print(n)

While LOOP:- Start, condition, increment/decrement ++,-- dose not support here as well do while loop

i = 1
while i <= 10:
	print(i, "loop")
	i = i + 1
	print(i)  # 10 times it will repeat but the last value will be 11.

String : String of Characters which is written between '' or "" or """ and index will start from 0 and reverse index will start at -1.

String slicing

w = "String Index"
print(w[7])  # it will give the value which is present in index 7
print(w[0:7])  # it will print till index 1-7 that is 6 , it is called slicing
print(w[0::2])  # here 2 is the increment vale of the index which
print(w[-1::-1])  # it will print reverse string value till last
print(w[-1:-7:-1]) # it will reverse till -6 1 less than -7 and will increment by -1