diff --git a/10lesson.py b/10lesson.py
new file mode 100644
index 0000000..beac9c3
--- /dev/null
+++ b/10lesson.py
@@ -0,0 +1,89 @@
+# lottery game
+import secrets
+secureNumber = secrets.SystemRandom()
+# build object
+# print(secureNumber)
+
+while True:
+    print('_________Welcome to 2D game with Python Programming_________')
+    press1 = int(input('______Press 1 for RULES OR 2 to start Game!____'))
+    if press1 == 1:
+        print(' >Your Age must be greater than or equal 17! ')
+        print(' >You need aleast 10000 Coin! ')
+        print(' >Your need to use aleast 1000 Coin to start game! ')
+    if press1 == 2:
+        print(' >You can start to play game Now! -----------')
+        print(' > Now, You need to fill some of your informations...')
+        print('Lets Start!')
+        clientName = input('Type your name : at least 3 words')
+        clientAge = int(input('Type your age : at least 17year!'))
+        print('_____you entered___', len(clientName))
+        print('_____you entered___', clientAge)
+        if len(clientName) < 3:
+            print('Your Name must be aleast 3Characters!')
+            exit()
+        if clientAge < 17:
+            print('Your Age must be aleast 17!')
+            exit()
+        while len(clientName) >= 3 and clientAge >= 17:
+            print('You can play game Now. ...')
+            print('Welcome', clientName ,'!. . ')
+            while True:
+                clientMoney = int(input('Now, Enter your coin! : aleast 10000 Coin'))
+                while clientMoney < 10000 or None:
+                    print('Coin must be aleast 10000!', clientName, 'coin is', clientMoney )
+                    clientMoney =  int(input('Please valid coin!'))
+                    if clientMoney < 10000:
+                        continue
+                while clientMoney >= 10000:
+                    if clientMoney >= 10000:
+                        print('your money is ', clientMoney)
+                        print('Hello', clientName, 'Thanks You! - - - -')
+                        clientUseMoney = int(input('How many conin wanna use ? Enter. :aleast 1000 : '))
+                        while clientUseMoney < 1000 or None:
+                            print('Use Coin must be aleast 1000!', clientName, 'Used coin is : ', clientUseMoney )
+                            clientUseMoney =  int(input('Please valid Use coin!'))
+                            if clientUseMoney < 1000:
+                                continue   
+                        if clientUseMoney >= 1000:
+                            print('You used ', clientUseMoney , 'coin for game!- - -')
+                            luckyNum = int(input('Insert your lucky Number! Must be two Number!------ '))
+                            while len(str(luckyNum)) < 2 or None:
+                                print('Use two number!', clientName, 'inserted lucky number is', luckyNum )
+                                luckyNum =  int(input('Please valid Luck Number!'))
+                                while len(str(luckyNum)) < 2 or len(str(luckyNum)) > 2:
+                                    continue 
+                            if len(str(luckyNum)) == 2:
+                                sysNumber = secureNumber.randint(10,99)
+                                countNum = 0
+                                while countNum < 3:
+                                    print('Wait... What is Number Today is . . .')
+                                    countNum +=1
+                                if  luckyNum == sysNumber:
+                                    clientMoney = clientMoney + clientUseMoney
+                                    print('Today Number is : ', sysNumber)  
+                                    print('Hey',clientName,'Congratulation. . .You Won!!!!----')
+                                    print('Hey',clientName,'You got',clientMoney)
+                                
+                                    playAgainNum = int(input('enter 1  to play again OR Enter 0 to QUIT****'))
+                                    while clientMoney > 0:
+                                        if playAgainNum == 1:
+                                            break
+                                    while playAgainNum == 0:
+                                        exit()
+                                else:
+                                    clientMoney = clientMoney - clientUseMoney
+                                    print("Today number is :", sysNumber)
+                                    print("Your Lucky number is :", luckyNum)
+                                    print("Sorry..Good Luck again", clientName)
+                                    print('Hey',clientName,'Your Coin : ',clientMoney)
+                                if clientMoney == 0 or clientMoney < 1000:
+                                    exit()
+
+                        
+                        
+
+
+
+        
+    
\ No newline at end of file
diff --git a/1112lesson.py b/1112lesson.py
new file mode 100644
index 0000000..22e239c
--- /dev/null
+++ b/1112lesson.py
@@ -0,0 +1,10 @@
+yourInput = input('enter your number')
+while True:
+    if yourInput.isdigit() and len(yourInput) <3:
+        print('your input must be atleast 3word')
+        break
+    elif yourInput.isdigit() and len(yourInput) > 3:
+        print('not greater than 3')
+    else:
+        print('ok')
+        break
\ No newline at end of file
diff --git a/13lesson.py b/13lesson.py
new file mode 100644
index 0000000..8bc3074
--- /dev/null
+++ b/13lesson.py
@@ -0,0 +1,80 @@
+# for loop with example
+
+# 1.while loop
+# x = 0
+# while x < 5:
+#     print(x)
+#     x += 1
+
+# for loop with break
+# i = 1
+# while i < 6:
+#   print(i)
+#   if i == 3:
+#     break
+#   i += 1
+
+
+# p = 10
+# while p < 25:
+#     print(p)
+#     if p == 18:
+#         break
+#     p += 1
+
+# for loop with continue
+# 意味　＝＞　止める現状の反復　/　次へ続く
+
+# i = 0
+# while i < 6:
+#   if i == 3:
+#     i += 1
+#     continue
+#   print(i)
+#   i += 1
+
+  
+# 2 range
+# x = range(6)
+# for n in x:
+#   print(n)
+
+# range with for loop
+# p = 0
+# for p in range(5):
+#     print(p)
+
+# Tuple
+# tup=('h','e','l','l','o')
+# for p in tup:
+#     print(p)
+# Loop Tuple with list
+# packing
+# lootu = [(1,2),(3,4)]
+# for p in lootu:
+#     print(p)
+# unpacking
+# for p,t in lootu:
+#     print(p,t)
+
+# print(0%7)
+# for p in range(5):
+#     t = p%3
+#     print(t)
+#     if t == 0:
+#         print('modulus')
+#     else:
+#         print('modulus not zero')
+
+# Zero Division Error ___ Try Except Finally
+# for p in range(5):
+#     print('loop in range 5, p : ', p)
+#     try:
+#         10/(p-3)
+#     except ZeroDivisionError:
+#         print('divided by zero')
+#     finally:
+#         print('not divided by zero')
+
+    
+
diff --git a/14lesson.py b/14lesson.py
new file mode 100644
index 0000000..b4fcc43
--- /dev/null
+++ b/14lesson.py
@@ -0,0 +1,43 @@
+# string with for loop
+# words = 'pyaephyothant'
+# for x in words:
+#     print(x, end='-')
+# with index
+# i = 0
+# for x in words:
+#     print(i,x)
+#     i+=1
+# enumerate
+# for i,x in enumerate(words):
+#     print(i,x)
+
+# row = int(input('write number between 1 and 5'))
+# for p in range(row):
+#     for t in range(p):
+#         print('*',t,'t')
+#     print('-',p,'p')
+
+
+# row = int(input('write number between 1 and 10'))
+# for p in range(row):
+#     for t in range(p):
+#         print(t,end='')
+#     print('-')
+
+# for p in range(1,row):
+#     # print(p,'p')
+#     for t in range(p):
+#         print(t,end='')
+#     print('-')
+
+# x = range(3, 0, -2)
+# print(x)
+# for n in x:
+#   print(n)
+
+putInNumber = int(input('insert value of a number between 1 and 5 = '))
+for p in range(5,putInNumber):
+    for t in range(p,0,-1):
+        print('t',t)
+    print('-')
+
diff --git a/15lesson.py b/15lesson.py
new file mode 100644
index 0000000..5d7ef1a
--- /dev/null
+++ b/15lesson.py
@@ -0,0 +1,21 @@
+# pyramic triangle
+# forRow = int(input('Enter number to make pyramic'))
+# spaceRow = forRow
+# for i in range(1,forRow):
+#     for j in range(spaceRow):
+#         print(end=' ')
+#     spaceRow = spaceRow-1
+#     for k in range(1,i*2):
+#         print('*',end='')
+#     print('')
+
+# reverse pyramic triangle
+forRow = int(input('Enter number to make reverse pyramic'))
+forStar = forRow
+for i in range(1,forRow):
+    for j in range(i):
+        print(' ',end='')
+    for k in range((forStar*2),3,-1):
+        print('*',end='')
+    forStar = forStar-1
+    print(' ')
\ No newline at end of file
diff --git a/7lesson.py b/7lesson.py
new file mode 100644
index 0000000..3351f3b
--- /dev/null
+++ b/7lesson.py
@@ -0,0 +1,52 @@
+# while loop
+
+# i = 1
+# while i < 10:
+    # print('looping number of i value is : {}'.format(i))
+    # i += 1 
+
+# while loop exercise
+p = 0
+t = 5
+
+# while t > p : 
+#     print('p is' , p, 't is' , t)
+#     t -=  1
+
+# break and continue
+
+# for pt in 'pathein':
+#     if pt == 'n':
+#         break
+#     print('without break')
+
+# print('----------breaked--------------')
+
+
+# for pp in 'yangon':
+#     if pp == 'n':
+#         continue
+#     print('without break',pp)
+# print('---------continue-----')
+
+
+
+# while and break programm
+ls = [10,20,60,99]
+compareNum = 99
+found = False
+index = 0 
+# print(len(ls))
+
+while index < len(ls):
+    if ls[index] == compareNum:
+        found = True
+        break
+    index += 1
+
+if not found:
+    # print(not found)
+    ls.append(compareNum)
+
+# print(ls)
+
diff --git a/8lesson.py b/8lesson.py
new file mode 100644
index 0000000..f297b65
--- /dev/null
+++ b/8lesson.py
@@ -0,0 +1,49 @@
+# Random
+import random
+
+
+# The random() method returns a random floating number between 0 and 1.
+# print(random.random())
+
+# for integers randint() randrange()
+# print(random.randint(2,6))
+
+# random.randrange(start, stop, step)
+print(random.randrange(2,8,2))
+
+# random.choice(sequence)
+# random.sample(sequence, k) sequence	Required. A sequence. Can be any sequence: list, set, range etc. && k	Required. The size of the returned list
+# fruits = ['Apple', 'Banana', 'Orange', 'Grapes', 'Strawberry']
+# print(random.choice(fruits))
+# print(random.sample(fruits,2))
+
+# random.seed(a, version)
+# *** Random.seed is not secure!!!!!!!!!!!!!!!!!!
+# a	Optional. The seed value needed to generate a random number.
+# If it is an integer it is used directly, if not it has to be converted into an integer.
+# Default value is None, and if None, the generator uses the current system time.
+
+# version	An integer specifying how to convert the a parameter into a integer.
+# Default value is 2
+
+# random.seed(42)
+# print(random.random())
+
+# shuffle
+# Shuffle a list (reorganize the order of the list items):
+# fruits = ['Apple', 'Banana', 'Orange', 'Grapes', 'Strawberry']
+# print('Before Shuffle/ original fruits list', fruits)
+# random.shuffle(fruits)
+# print('Shuffled List', fruits)
+
+# uniform random.uniform(a, b)
+# a	Required. A number specifying the lowest possible outcome
+# b	Required. A number specifying the highest possible outcome
+# The uniform() method returns a random floating number between the two specified numbers (both included).
+
+# print('uniform', random.uniform(5,10))
+# random.triangular(low, high, mode)
+# print(random.triangular(20, 60, 10))
+
+
+
diff --git a/9lesson.py b/9lesson.py
new file mode 100644
index 0000000..a6e9912
--- /dev/null
+++ b/9lesson.py
@@ -0,0 +1,38 @@
+# Secure random
+import secrets
+
+# secrets.SystemRandom
+
+# randint & randint
+# secureGenerator = secrets.SystemRandom()
+# secureRandNumber = secureGenerator.randint(2,10)
+# print('secured random numbers', secureRandNumber)
+
+# secureGenerator = secrets.SystemRandom()
+# secureRandNumberByRange = secureGenerator.randrange(2,11,4)
+# ရွေးချယ်ခွင့် တိုးပွားမှုကို သတ်မှတ်သည့် ကိန်းပြည့်။ default 1
+# print('secured random numbers ranges', secureRandNumberByRange)
+
+# choice & sample
+# fruits = ['Apple', 'Banana', 'Orange', 'Grapes', 'Strawberry']
+# secureGenerator = secrets.SystemRandom()
+# secureFruit = secureGenerator.choice(fruits)
+# print('securedFruit', secureFruit)
+
+# secureGenerator = secrets.SystemRandom()
+# secureFruitSample = secureGenerator.sample(fruits,2)
+# print('secureFruitSample', secureFruitSample)
+
+# secret.token_byte
+# print(secrets.token_bytes(4))
+# print(secrets.token_bytes(2))
+# secret.token_hex 2 => 4 , 4 => 8
+# print(secrets.token_hex(3)) 
+
+# Token URL safe
+# print(secrets.token_urlsafe(2))
+
+passwordResetLink = 'http://resetUrlLink/reset='
+passwordResetLink += secrets.token_urlsafe()
+print('url secretlinks', passwordResetLink)
+
diff --git a/README.md b/README.md
index efcda87..0ecaa70 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,3 @@
+> Learning Python Programming . . . 
+
 > Learning Python Programming Language 
diff --git a/lesson3.py b/lesson3.py
index 677acb7..5cfdc49 100644
--- a/lesson3.py
+++ b/lesson3.py
@@ -4,14 +4,14 @@
 z = "green"
 
 x = y = z = 20
-print("x",x)
-print("y",y)
-print("z",z)
+# print("x",x)
+# print("y",y)
+# print("z",z)
 x = 5
 y = 15
 
-print("x",x)
-print("y",y)
+# print("x",x)
+# print("y",y)
 
 # identifier
 
@@ -37,4 +37,35 @@
 # Tuple
 # dictionary
 
+# arithmetic operators
 
+x = 1.1
+y = 2.2
+# print(x+y)
+
+a = 5
+b = 6
+# print(a*b)
+
+c = 3.9
+d = 3.3
+# print(c/d)
+# print(c%d)
+
+# complex (use j/J) real part + imginary part
+a = complex(1,2)
+# print(a)
+# print(a.real)
+# print(a.imag)
+
+# convert using float() int() and complex()
+x = 100
+y = 2.8
+z = 1j
+
+# convert integer to float
+print(float(x))
+# convert float to integer
+print(int(y))
+# convert int to complex
+print(complex(x))
\ No newline at end of file
diff --git a/lesson4.py b/lesson4.py
new file mode 100644
index 0000000..791fbda
--- /dev/null
+++ b/lesson4.py
@@ -0,0 +1,37 @@
+# control structures
+a = 400
+b = 300
+# if a < b :
+#     # print('a less than b')
+# else :
+#     # print('b greater than a')
+
+
+c = 500
+d = 500
+# if c < d:
+#     # print('c less than d')
+# elif c > d:
+#     # print('c greater than d')
+# else :
+#     # print('c and d value are equal')
+
+# largest Number
+a = 100
+b = 200
+c = 300
+d = 400
+
+if (a > b) and (a > c) and (a > d) : 
+    largestNumber  = a 
+    print('Largest Number is : ', largestNumber)
+elif (b > a ) and ( b > c) and (b > d) : 
+    largestNumber = b
+    print('largest Number is : ', b)
+elif (c > a) and (c > b) and (c > d):
+    largestNumber = c
+    print('largest Number is : ', largestNumber)
+else :
+    largestNumber = d
+    print('largest Number is : ', largestNumber)
+ 
diff --git a/lesson5.py b/lesson5.py
new file mode 100644
index 0000000..7f19ddb
--- /dev/null
+++ b/lesson5.py
@@ -0,0 +1,37 @@
+# calculator program
+# Lesson 5 
+
+print("Press + for Add")
+print("Press - for Subtract")
+print("Press * for Multiply")
+print("Press / for Divide")
+
+userInput = input('please enter operator for Add or Subtract or Multiply or Divide')
+# print(userInput)
+print('you entered : ', userInput)
+
+firstNumber = int(input('Enter Your First Number'))
+print('your first number is : ', firstNumber)
+
+secondNumber = int(input('Enter Your Second Number'))
+print('your second number is : ', secondNumber)
+
+if userInput == '+' :
+    result = firstNumber + secondNumber
+    print('result is :', result)
+elif userInput == '-' :
+    result = firstNumber * secondNumber
+    print('result is :', result)
+elif userInput == '*' :
+    result = firstNumber * secondNumber
+    print('result is :', result)
+elif userInput == '/' :
+    result = firstNumber / secondNumber
+    print('result is :', result)
+else :
+    print('your input {} is invalid ! Please try again later!'.format(userInput) )
+    exit()
+
+
+
+