diff --git a/projects/m1/017-what-day-of-the-week/python/main.py b/projects/m1/017-what-day-of-the-week/python/main.py
index e69de29bb..efcb20823 100644
--- a/projects/m1/017-what-day-of-the-week/python/main.py
+++ b/projects/m1/017-what-day-of-the-week/python/main.py
@@ -0,0 +1,29 @@
+#import math module
+import math
+
+# ask to user a year
+year = int(input('Type a year: '))
+
+# using the gived formula determinate wich day is the first of the year typed
+first_day = int((year + math.floor((year - 1) / 4) - math.floor(year - 1 / 100) + math.floor(year - 1) / 400) % 7)
+
+
+# if statement the convert the number gived by formula to the name of the day and print on screen
+if first_day == 0: 
+    result = 'Sunday'
+elif first_day == 1:
+    result = 'Monday'
+elif first_day == 2:
+    result = 'Tuesday'
+elif first_day == 3:
+    result = 'Wednesday'
+elif first_day == 4:
+    result = 'Thursday'
+elif first_day == 5:
+    result = 'Friday'
+elif first_day == 6:
+    result = 'Saturday'
+else:
+    result = 'error'
+
+print('First day of that year is: ' + str(result))
diff --git a/projects/m1/018-roulette-payouts/python/main.py b/projects/m1/018-roulette-payouts/python/main.py
index e69de29bb..ed8d6415a 100644
--- a/projects/m1/018-roulette-payouts/python/main.py
+++ b/projects/m1/018-roulette-payouts/python/main.py
@@ -0,0 +1,33 @@
+#import random module
+import random
+
+# use random function to get a number 
+choice = random.choice(range(0,38))
+
+# if statement that print on screen wich is number and the other cases that pay like a roulette
+if choice % 2 == 0 and choice != 37 and choice != 0:
+    number = choice
+    color = 'pay black'
+    odd_even ='pay even'
+if choice % 2 != 0 and choice != 37:
+    number = choice
+    color = 'red'
+    odd_even = 'odd'
+if choice == 37:
+    number = '00'
+    color = 'green'
+if choice == 0:
+    number = choice
+    color = 'green'
+    
+if choice <= 18 and choice > 0:
+    range_payout = '1 to 18'
+elif choice > 18 and choice < 37:
+    range_payout = '19 to 36'
+
+if number == 0 or number == '00':
+    print('Pay ' + str(number) + '\n' + 'Pay ' + str(color))
+else: 
+    print('Pay ' + str(number) + '\n' +  'Pay ' + str(color) + '\n' + 'Pay ' + str(odd_even) + '\n' + 'Pay '+ str(range_payout))
+
+
diff --git a/projects/m1/019-average/python/main.py b/projects/m1/019-average/python/main.py
index e69de29bb..aa172f54f 100644
--- a/projects/m1/019-average/python/main.py
+++ b/projects/m1/019-average/python/main.py
@@ -0,0 +1,29 @@
+number = ' '
+counter = 0
+result = ''
+
+ 
+while number != 0:
+    counter = counter + 1
+    number = input('Type a number or 0 to end: ')
+    if not number.isdigit():
+        result = 'error, value is not a number'
+        break
+    number = int(number)
+    if number == 0 and counter == 1:
+        result = 'error, first value can\'t be 0'
+        break
+    elif number != 0 and counter == 1:
+        result = number
+    else:      
+        result = result + number 
+
+if isinstance(result, str):
+    print(result)
+else:
+    counter = counter - 1
+    result = result / counter
+    print(result)
+    
+
+
diff --git a/projects/m1/020-discount-table/python/main.py b/projects/m1/020-discount-table/python/main.py
index e69de29bb..6f03e1dc9 100644
--- a/projects/m1/020-discount-table/python/main.py
+++ b/projects/m1/020-discount-table/python/main.py
@@ -0,0 +1,7 @@
+price = 4.95
+
+for i in range(1,6):
+    discount = round((price * 60) / 100, 2)
+    discounted_price = round((price - discount),2)
+    print(f'The original price was {price} $, the discount is 60%, equal to {discount} % and the new price is {discounted_price } $')
+    price = price + 5.0
\ No newline at end of file
diff --git a/projects/m1/021-compute-the-perimeter-of-a-polygon/python/main.py b/projects/m1/021-compute-the-perimeter-of-a-polygon/python/main.py
index e69de29bb..6b61df251 100644
--- a/projects/m1/021-compute-the-perimeter-of-a-polygon/python/main.py
+++ b/projects/m1/021-compute-the-perimeter-of-a-polygon/python/main.py
@@ -0,0 +1,51 @@
+
+import math
+
+perimeter = 0
+counter = 0
+
+first_x = input('Enter the first x-coordinate: ')
+
+for character in first_x:
+    if character.isdigit() == False and character != '.':
+        print('error, first x-coordinate invalid')
+        quit()
+
+first_y = input('Enter the first y-coordinate: ')
+
+for character in first_y:
+    if character.isdigit() == False and character != '.':
+        print('error, first y-coordinate invalid')
+        quit()
+
+
+FIRST_X = float(first_x)
+FIRST_Y = float(first_y)
+
+x = FIRST_X
+y = FIRST_Y
+
+next_x = ' '
+
+while next_x != '':
+    counter += 1
+    next_x = input('Enter the next x-coordinate: ')
+    if next_x == '' and counter <= 2:
+        print('enter at least 3 pairs of value')
+        quit()
+    elif next_x == '':
+        continue
+    next_y = input('Enter the next y-coordinate: ')
+    if next_y == '':
+        print(f'invalid value for y')
+        quit()
+    next_x = float(next_x)
+    next_y = float(next_y)
+    distance = math.sqrt((next_x - x)**2 + (next_y - y)**2)
+    perimeter = perimeter + distance
+    x = next_x
+    y = next_y
+distance = math.sqrt((x - FIRST_X)**2 + (y - FIRST_Y)**2)
+perimeter = perimeter + distance
+
+print(f'The perimeter of that polygon is {perimeter}')
\ No newline at end of file
diff --git a/projects/m1/022-admission-price/python/main.py b/projects/m1/022-admission-price/python/main.py
index e69de29bb..ab4fe725f 100644
--- a/projects/m1/022-admission-price/python/main.py
+++ b/projects/m1/022-admission-price/python/main.py
@@ -0,0 +1,36 @@
+
+under_3 = 0
+under_13 = 0
+adult = 0
+senior = 0
+under_13_ticket = 14
+adult_ticket = 23
+senior_ticket = 18
+
+user_input = ' '
+
+while user_input != '':
+    user_input = input('insert guest age or a blank line to quit: ')
+    if user_input == '':
+        continue
+    else:
+        if int(user_input) < 3:
+            under_3 += 1 
+        elif  12 >= int(user_input) >= 3:
+            under_13 += 1
+        elif int(user_input) >= 65:
+            senior += 1
+        else:
+            adult += 1
+
+price_under_13 = int(under_13) * under_13_ticket
+price_adult = int(adult) * adult_ticket
+price_senior = int(senior) * senior_ticket
+total = '%.2f' % (price_under_13 + price_adult + price_senior)
+
+
+if under_3 and under_13 and adult and senior == 0:
+    quit()
+else: 
+    print(f"Your group is composed by {under_3} children equal or under 2 years old , {under_13} equal or under 12 years old, {senior} over 65 and {adult} between 12 and 65. Total amount for tickets is {total} $")
+    
\ No newline at end of file
diff --git a/projects/m1/023-parity-bits/python/main.py b/projects/m1/023-parity-bits/python/main.py
index e69de29bb..ce62cf1fc 100644
--- a/projects/m1/023-parity-bits/python/main.py
+++ b/projects/m1/023-parity-bits/python/main.py
@@ -0,0 +1,33 @@
+
+user_bit = ' '
+
+total = 0
+
+message = ''
+
+invalid_value = None
+
+while user_bit != '':
+    user_bit = input("Insert a 8 bit sequence or press enter to end: \n")
+    if user_bit == '':
+        continue
+    for i in user_bit:
+        if i != '0' and i != '1':
+            invalid_value = True
+    if invalid_value == True:
+        message = message + f'{user_bit} invalid value \n'
+        continue       
+    if len(user_bit) != 8:
+        message = message + f'{user_bit} invalid value \n'
+        continue
+    else:
+        for i in user_bit:
+            i = int(i)
+            total = total + i
+        if total % 2 == 0:
+            message = message + f'{user_bit} for even parity, parity bit should be 0 \n'
+            total = 0
+        else:
+            message = message + f"{user_bit} for even parity, parity bit should be 1 \n"
+            total = 0
+print(message)
diff --git a/projects/m1/024-fizz-buzz/python/main.py b/projects/m1/024-fizz-buzz/python/main.py
index e69de29bb..aedef6c07 100644
--- a/projects/m1/024-fizz-buzz/python/main.py
+++ b/projects/m1/024-fizz-buzz/python/main.py
@@ -0,0 +1,13 @@
+result = ''
+
+for i in range(1,101):
+    if i % 3 == 0 and i % 5 == 0:
+        result = result + f"{i} fizz! buzz!\n"
+    elif i % 3 == 0:
+        result = result + f'{i} fizz!\n'
+    elif i % 5 == 0:
+        result = result + f"{i} buzz! \n"
+    else:
+        result = result + f'{i} \n'
+
+print(result)
diff --git a/projects/m1/025-caesar-cipher/python/main.py b/projects/m1/025-caesar-cipher/python/main.py
index e69de29bb..a46e614ff 100644
--- a/projects/m1/025-caesar-cipher/python/main.py
+++ b/projects/m1/025-caesar-cipher/python/main.py
@@ -0,0 +1,28 @@
+message = input('insert a message to encode or decode: ')
+number = int(input('insert a positive number to encode or negative to decode: '))
+
+ALPHABET = 'abcdefghijklmnopqrstuvwxyz'
+new_message = ''
+NUMBERS = '0123456789'
+
+for i in message:
+    if i in NUMBERS or i == ' ':
+        new_message += i
+    elif i == 'à':
+        i = 'a'
+    elif i == 'è' or i == 'é':
+        i = 'e'
+    elif i == 'ì':
+        i = 'i'
+    elif i == 'ò':
+        i = 'o'
+    elif i == 'ù':
+        i = 'u'
+    for e in ALPHABET:
+        if e == i:
+            index = ALPHABET.index(e)
+            if index + number >= 26:
+                new_message += ALPHABET [(index + (number)) % 26]
+            else: 
+                new_message += ALPHABET[index + (number)]
+print(new_message)
\ No newline at end of file
diff --git a/projects/m1/026-is-a-string-a-palindrome/python/main.py b/projects/m1/026-is-a-string-a-palindrome/python/main.py
index e69de29bb..390d525d0 100644
--- a/projects/m1/026-is-a-string-a-palindrome/python/main.py
+++ b/projects/m1/026-is-a-string-a-palindrome/python/main.py
@@ -0,0 +1,16 @@
+USER_INPUT = input('type a word: ')
+
+new_word = ''
+
+for i in reversed(USER_INPUT):
+    new_word += i
+
+if new_word == USER_INPUT:
+    result = f'{USER_INPUT} is a palyndrome'
+else:
+    result = f'{USER_INPUT} is not a palyndrome'
+
+print(result)
+
+
+
diff --git a/projects/m1/027-the-collatz-conjecture/python/main.py b/projects/m1/027-the-collatz-conjecture/python/main.py
index e69de29bb..bd9c3acb0 100644
--- a/projects/m1/027-the-collatz-conjecture/python/main.py
+++ b/projects/m1/027-the-collatz-conjecture/python/main.py
@@ -0,0 +1,45 @@
+# while True:
+#     user_input = int(input('type a postive number or a negative number or a 0 to end: '))
+#     if user_input <= 0:
+#         break
+#     else:
+#         number = user_input
+#         sequence = str(number) 
+#         while number != 1:
+#             if number % 2 == 0:
+#                 number = number // 2
+#                 sequence += ' ' + str(number)
+#             else:
+#                 number = number * 3 + 1
+#                 sequence += ' ' + str(number)
+#         print(sequence)
+
+sequence = ''
+user_input = 1
+result = ''
+
+while user_input > 0:
+    user_input = input('type a postive number or a negative number or a 0 to end: ')
+    if user_input == '':
+        result += f'Error: empty field\n'
+        user_input = 1
+        continue
+    elif user_input.isdigit() == False:
+        result += f'Error: invalid value\n'
+        user_input = 1
+        continue
+    user_input = int(user_input)
+    number = user_input
+    sequence = str(number) 
+    if user_input != 0:
+        while sequence[-1] != '1':
+            if number % 2 == 0:
+                number = number // 2
+                sequence += f' {number}'
+            else:
+                number = number * 3 + 1
+                sequence += f' {number}'
+        result += f'{sequence} \n'
+    else:
+        continue
+print(result)
diff --git a/projects/m1/028-prime-factors/python/main.py b/projects/m1/028-prime-factors/python/main.py
index e69de29bb..abc759483 100644
--- a/projects/m1/028-prime-factors/python/main.py
+++ b/projects/m1/028-prime-factors/python/main.py
@@ -0,0 +1,18 @@
+number = int(input('type a number: '))
+factor = 2
+result = ''
+
+if number < 2:
+    print('number must be grater or, at least, equal to 2')
+    quit()
+
+
+while number >= factor:
+    if number % factor == 0:
+        number = number / factor
+        result += ' ' + str(factor)
+    else:
+        factor += 1
+
+print(result)
+
diff --git a/projects/m1/029-decimal-to-binary/python/main.py b/projects/m1/029-decimal-to-binary/python/main.py
index e69de29bb..b54cd7e8f 100644
--- a/projects/m1/029-decimal-to-binary/python/main.py
+++ b/projects/m1/029-decimal-to-binary/python/main.py
@@ -0,0 +1,9 @@
+result = ''
+
+q = int(input('Type a number to convert in binary: '))
+
+while q != 0:
+    r = q % 2
+    result += str(r)
+    q = q // 2
+print(f'The binary value of the number is : {result}')
\ No newline at end of file
diff --git a/projects/m1/030-maximum-integer/python/main.py b/projects/m1/030-maximum-integer/python/main.py
index e69de29bb..0893ad410 100644
--- a/projects/m1/030-maximum-integer/python/main.py
+++ b/projects/m1/030-maximum-integer/python/main.py
@@ -0,0 +1,17 @@
+import random
+
+high_number = random.choice(range(1,101))
+
+update = 0
+
+for i in range(1,100):
+    number = random.choice(range(1,101))
+    if number > high_number:
+        high_number = number
+        print(f'{number} <== update')
+        update += 1
+    else:    
+        print(number)
+
+print(f'The maximum value found was {high_number} and was updated {update} times ')
+
diff --git a/projects/m1/031-coin-flip-simulation/python/main.py b/projects/m1/031-coin-flip-simulation/python/main.py
index e69de29bb..7d50e0702 100644
--- a/projects/m1/031-coin-flip-simulation/python/main.py
+++ b/projects/m1/031-coin-flip-simulation/python/main.py
@@ -0,0 +1,17 @@
+import random
+
+sequence = ''
+average = 0
+
+for i in range(0,10):
+    while sequence.count('TTT') == False and sequence.count('HHH') == False:
+        value = random.randint(0,1)
+        if value == 0:
+            sequence += 'H'
+        else:
+            sequence += 'T'
+    average += len(sequence)
+    print(f'{sequence} ({len(sequence)} flips)')
+    sequence = ''
+
+print(f'On average {average / 10} were needed.')
\ No newline at end of file