diff --git a/01_Day_Introduction/helloworld.py b/01_Day_Introduction/helloworld.py
index d8007868f..2704fb856 100644
--- a/01_Day_Introduction/helloworld.py
+++ b/01_Day_Introduction/helloworld.py
@@ -9,8 +9,8 @@
 print(3 + 2)   # addition(+)
 print(3 - 2)   # subtraction(-)
 print(3 * 2)   # multiplication(*)
-print(3 / 2)   # division(/)
 print(3 ** 2)  # exponential(**)
+print(3 / 2)   # division(/)
 print(3 % 2)   # modulus(%)
 print(3 // 2)  # Floor division operator(//)
 
@@ -22,4 +22,7 @@
 print(type('Asabeneh'))          # String
 print(type([1, 2, 3]))           # List
 print(type({'name': 'Asabeneh'}))  # Dictionary
-print(type({9.8, 3.14, 2.7}))    # Tuple
+print(type({9.8, 3.14, 2.7}))    # Set
+print(type((9.8, 3.14, 2.7)))    # Tuple
+print(type(True))                # Bool
+print(type(None))                # NoneType
diff --git a/02_Day_2/variables.py b/02_Day_2/variables.py
new file mode 100644
index 000000000..4a3837c98
--- /dev/null
+++ b/02_Day_2/variables.py
@@ -0,0 +1,13 @@
+# Day 2: 30 Days of Python Programming
+
+first_name = "Bhratesh"
+Last_name = "Dhangar"
+Full_name = "Bhratesh Dhangar"
+Country_name = "India"
+City_name = "Pune"
+Age = 27
+Year = 2024
+Is_married = False
+Is_true = True
+Is_light_on = True
+First_name, Last_name, Age = "Bhratesh", "Dhangar", 27
\ No newline at end of file
diff --git a/03_Day_Operators/day-3.py b/03_Day_Operators/day-3.py
index cbf7e5a1d..b3055f6b6 100644
--- a/03_Day_Operators/day-3.py
+++ b/03_Day_Operators/day-3.py
@@ -1,26 +1,26 @@
 # Arithmetic Operations in Python
 # Integers
 
-print('Addition: ', 1 + 2)
-print('Subtraction: ', 2 - 1)
-print('Multiplication: ', 2 * 3)
+print(f'Addition: {1 + 2}')
+print(f'Subtraction: {2 - 1}')
+print(f'Multiplication: {2 * 3}')
 # Division in python gives floating number
-print('Division: ', 4 / 2)
-print('Division: ', 6 / 2)
-print('Division: ', 7 / 2)
+print(f'Division: {4 / 2}')
+print(f'Division: {6 / 2}')
+print(f'Division: {7 / 2}')
 # gives without the floating number or without the remaining
-print('Division without the remainder: ', 7 // 2)
-print('Modulus: ', 3 % 2)                           # Gives the remainder
-print('Division without the remainder: ', 7 // 3)
-print('Exponential: ', 3 ** 2)                     # it means 3 * 3
+print(f'Division without the remainder: {7 // 2}')
+print(f'Modulus: {3 % 2}')                           # Gives the remainder
+print(f'Division without the remainder: {7 // 3}')
+print(f'Exponential: {3 ** 2}')                     # it means 3 * 3
 
 # Floating numbers
-print('Floating Number,PI', 3.14)
-print('Floating Number, gravity', 9.81)
+print(f'Floating Number, PI: {3.14}')
+print(f'Floating Number, gravity: {9.81}')
 
 # Complex numbers
-print('Complex number: ', 1+1j)
-print('Multiplying complex number: ', (1+1j) * (1-1j))
+print(f'Complex number: {1+1j}')
+print(f'Multiplying complex number: {(1+1j) * (1-1j)}')
 
 # Declaring the variable at the top first
 
@@ -38,13 +38,13 @@
 
 # I should have used sum instead of total but sum is a built-in function try to avoid overriding builtin functions
 print(total)  # if you don't label your print with some string, you never know from where is  the result is coming
-print('a + b = ', total)
-print('a - b = ', diff)
-print('a * b = ', product)
-print('a / b = ', division)
-print('a % b = ', remainder)
-print('a // b = ', floor_division)
-print('a ** b = ', exponential)
+print(f'a + b = {total}')
+print(f'a - b = {diff}')
+print(f'a * b = {product}')
+print(f'a / b = {division}')
+print(f'a % b = {remainder}')
+print(f'a // b = {floor_division}')
+print(f'a ** b = {exponential}')
 
 # Declaring values and organizing them together
 num_one = 3
@@ -58,24 +58,24 @@
 remainder = num_two % num_one
 
 # Printing values with label
-print('total: ', total)
-print('difference: ', diff)
-print('product: ', product)
-print('division: ', div)
-print('remainder: ', remainder)
+print(f'total: {total}')
+print(f'difference: {diff}')
+print(f'product: {product}')
+print(f'division: {div}')
+print(f'remainder: {remainder}')
 
 
 # Calculating area of a circle
 radius = 10                                 # radius of a circle
 # two * sign means exponent or power
 area_of_circle = 3.14 * radius ** 2
-print('Area of a circle:', area_of_circle)
+print(f'Area of a circle: {area_of_circle}')
 
 # Calculating area of a rectangle
 length = 10
 width = 20
 area_of_rectangle = length * width
-print('Area of rectangle:', area_of_rectangle)
+print(f'Area of rectangle: {area_of_rectangle}')
 
 # Calculating a weight of an object
 mass = 75
@@ -99,22 +99,24 @@
 print(len('python') > len('dragon'))   # False
 
 # Boolean comparison
-print('True == True: ', True == True)
-print('True == False: ', True == False)
-print('False == False:', False == False)
-print('True and True: ', True and True)
-print('True or False:', True or False)
+print(f'True == True: {True == True}')
+print(f'True == False: {True == False}')
+print(f'False == False: {False == False}')
+print(f'True and True: {True and True}')
+print(f'True or False: {True or False}')
 
 # Another way comparison
+# 'is' checks for object identity, while '==' checks for value equality.
+# For comparing values (like numbers), it is safer to use '=='.
 # True - because the data values are the same
-print('1 is 1', 1 is 1)
-print('1 is not 2', 1 is not 2)           # True - because 1 is not 2
-print('A in Asabeneh', 'A' in 'Asabeneh')  # True - A found in the string
-print('B in Asabeneh', 'B' in 'Asabeneh')  # False -there is no uppercase B
+print(f'1 is 1: {1 is 1}')
+print(f'1 is not 2: {1 is not 2}')           # True - because 1 is not 2
+print(f"'A' in 'Asabeneh': {'A' in 'Asabeneh'}")  # True - A found in the string
+print(f"'B' in 'Asabeneh': {'B' in 'Asabeneh'}")  # False -there is no uppercase B
 # True - because coding for all has the word coding
-print('coding' in 'coding for all')
-print('a in an:', 'a' in 'an')      # True
-print('4 is 2 ** 2:', 4 is 2 ** 2)   # True
+print(f"'coding' in 'coding for all': {'coding' in 'coding for all'}")
+print(f"'a' in 'an': {'a' in 'an'}")      # True
+print(f'4 is 2 ** 2: {4 is 2 ** 2}')   # True, but using '==' is recommended for value comparison
 
 print(3 > 2 and 4 > 3)  # True - because both statements are true
 print(3 > 2 and 4 < 3)  # False - because the second statement is false