diff --git a/class_product.py b/class_product.py
new file mode 100644
index 0000000..4783999
--- /dev/null
+++ b/class_product.py
@@ -0,0 +1,30 @@
+class product:
+    def __init__(self,product_id,product_name,product_purchase_price,product_sale_price,):
+        self.product_id=product_id
+        self.product_name=product_name
+        self.product_purchase_price=product_purchase_price
+        self.product_sale_price=product_sale_price
+
+    def set_remarks(self):
+        self.end_price=self.product_sale_price - self.product_purchase_price
+        if self.end_price<0:
+            return "Loss"
+        elif self.end_price>0:
+            return "Profit"
+
+    def set_details(self):
+        self.product_id=2546
+        self.product_name="Phone"
+        self.product_purchase_price=420
+        self.product_sale_price=500
+        self.pr=self.set_remarks()
+
+        
+    def get_details(self):
+        print("product_id:", self.product_id, ",product_name:", self.product_name, ",product_purchase_price:", self.product_purchase_price, ",product_sale_price:", self.product_sale_price,)
+
+
+x=product(2546,"phone",420,500)
+print(x.set_remarks())
+print(x.set_details())
+print(x.get_details())
\ No newline at end of file
diff --git a/class_society.py b/class_society.py
new file mode 100644
index 0000000..d84e02e
--- /dev/null
+++ b/class_society.py
@@ -0,0 +1,36 @@
+class Society:
+    def __init__(self,society_name, house_no, no_of_members, flat, income):
+        self.society_name=society_name
+        self.house_no=house_no
+        self.no_of_members=no_of_members
+        self.flat=flat
+        self.income=income
+
+    def input_data(self):
+        self.society_name=input("society_name'i giriniz")
+        self.house_no=input("house_no'u giriniz")
+        self.no_of_members=input("no_of_members 'ı giriniz")
+        self.flat=input("flat'ı giriniz")
+        self.income=int(input("income'i giriniz"))
+    def allacote_flat(self):
+        if self.income >=25000:
+           self.flat="A Type"
+        elif self.income>=20000 and self.income<25000:
+            self.flat="B Type"
+        elif self.income>=15000 and self.income<20000:
+            self.flat="C Type"
+        elif self.income<15000:
+            self.flat="D Type"
+
+
+    def show_data(self):
+        """print(self.society_name, self.house_no, self.no_of_members, self.flat, self.income)"""
+
+
+        return f"society_name:{self.society_name}\thouse_no:{self.house_no}\tno_of_members:{self.no_of_members}\tflat:{self.flat}\tincome:{self.income}."
+
+a=Society("street",5,6,4,2)
+
+print(a.input_data())
+print(a.allacote_flat())
+print(a.show_data())
\ No newline at end of file
diff --git "a/class_\304\261temInfo.py" "b/class_\304\261temInfo.py"
new file mode 100644
index 0000000..009f196
--- /dev/null
+++ "b/class_\304\261temInfo.py"
@@ -0,0 +1,55 @@
+class ItemInfo:
+
+     def __init__(self,item_code,item,price,qty,discount,net_price):
+        self.item_code = item_code
+        self.item = item
+        self.price = price
+        self.qty = qty
+        self.discount = discount
+        self.net_price = net_price
+
+     def calculate_discount( self):
+
+        if self.qty<=10:
+           self.discount=0
+           self.message="discount is 0 "
+        elif self.qty>11 and self.qty<20:
+             self.discount=15
+             self.message="discount is 15 "
+        elif self.qty >= 20:
+            self.discount=20
+            self.message="discount is 20"
+
+        """self.net_price = self.price * self.qty - self.discount"""
+
+        return self.message
+
+
+
+     def buy(self,):
+         self.item_code=int(input("item_code için bir değer giriniz:",))
+         self.item=int(input("item için bir değer giriniz:",))
+         self.price = int(input("price için bir değer giriniz:",))
+         self.qty = int(input("qty için bir değer giriniz:",))
+
+         self.net_price = self.price * self.qty - self.discount
+
+         return "net_price:" ,self.net_price
+
+
+     def show_all(self):
+         print("item_code:",self.item_code ,"item:",self.item,"price:",self.price,"discount:",self.discount,"qty:",self.qty,"net_price:",self.net_price)
+
+
+
+x=ItemInfo(0,10,5,4,6,7)
+
+print(x.buy())
+print(x.calculate_discount())
+print(x.show_all())
+
+
+
+
+
+