diff --git a/week_2.py b/week_2.py
new file mode 100644
index 0000000..b59857c
--- /dev/null
+++ b/week_2.py
@@ -0,0 +1,276 @@
+###  Question 1 
+
+students = {
+    'Ahmet Yılmaz': [85, 90, 78],  
+    'Mehmet Demir': [92, 88, 76],  
+    'Ayşe Kaya': [78, 89, 95],     
+    'Zeynep Çelik': [65, 70, 80],  
+    'Ali Kara': [50, 60, 55],      
+    'Fatma Yıldız': [88, 85, 90],  
+    'Murat Aydın': [72, 68, 74],   
+    'Elif Aksoy': [95, 90, 88],    
+    'Hakan Öztürk': [45, 50, 55],  
+    'Canan Taş': [80, 75, 82]      
+}
+
+#1-Calculate each student's GPA and add it to the dictionary.
+
+for student, item in students.items():
+    average=sum(item)/len(item)
+    students[student].append(average)
+    print(f"Student:{student}, GPA:{average}")
+
+
+#Find the student with the highest GPA and print it on the screen.
+h_name=""
+h_score=0
+for student,item in students.items():
+    if item[3]>h_score:
+        h_score=item[3]
+        h_name=student
+
+print(f"Student:{h_name}, GPA:{h_score}")
+
+#Separate each student's name from their surname and store them in a separate tuple and add them to a list.
+
+lst=[]
+
+for student in students.keys():
+    temp_name=student.split()
+    lst.append(tuple(temp_name))
+
+print(lst)
+
+#Sort the names in alphabetical order and print the sorted list on the screen.
+lst_2=[student for student in students.keys()]
+lst_2.sort()
+print(lst_2)
+
+
+#Keep students with a GPA below 70 in a cluster (set).
+
+set_1=set([student for student,item in students.items() if item[3]<70])
+
+
+#Question 2 
+
+# 1 Kullanicinin gorecegi giris metnini yaz
+# 2 Kullanicidan girdi al--> Film adi, Yonetmeni, Yayin yili, Film turu
+# 3 Aldigin verileri array a ekle dict olarak sakla
+# 4 Kullaniciya verileri duzenleme ve silme secenegi ver( buna uygun fonksiyon yaz)
+# 5 Kullanicinin film koleksiyonunu goruntulemesine izin ver.Tum filmleri listele veya tur-yayin yili gibi kriterlere gore filtrele.
+# 6 Film verilerini bir dosyaya kaydet ve program basladiginda bu verileri geri yukle.
+
+import json
+
+with open("movielist.json", "r", encoding="utf-8") as json_dosyasi:
+    saved_movies  = json.load(json_dosyasi)
+
+
+
+menu = [' -----------------------------------------------------',
+        '|                                                     |',
+        '|      Movie Collection uygulamasina hos geldiniz.    |',
+        '|                                                     |',
+        '|      Yeni film  eklemek için 1 e,                   |',
+        '|                                                     |',
+        '|      Film  silmek için 2 ye,                        |',
+        '|                                                     |',
+        '|      Film güncellemek için 3 e,                     |',
+        '|                                                     |',
+        '|      Tüm filmleri görmek için 4 e basiniz.          |',
+        '|                                                     |',
+        '|                                                     |',
+        ' -----------------------------------------------------']
+
+for i in menu:
+    print('\t'.expandtabs(30), i)
+user = input("Lutfen yapmak istediginiz islem icin bir secenege basiniz: ")
+
+if user == "1":  # kullanici yeni bir film eklemek istiyorsa calisir
+
+    movie_name = input("Film adini giriniz: ")
+    movie_director_name = input("Filmin yonetmeni:  ")
+    movie_year = input("Filmin yayin yilini giriniz: ")
+    movie_type = input("Filmin turunu giriniz: ")
+
+    movie_list=[]
+    movie_dict = {}
+
+    movie_dict["movie_name"] = movie_name
+    movie_dict["movie_director_name"] = movie_director_name
+    movie_dict["movie_year"] = movie_year
+    movie_dict["movie_type"] = movie_type
+
+    saved_movies.append(movie_dict)
+
+    with open("movielist.json", "w", encoding="utf-8") as json_dosyasi:
+        json.dump(saved_movies, json_dosyasi, ensure_ascii=False, indent=4)
+    print("Yeni film kaydedildi!")
+
+if user == "2":
+    
+    deleted_movie = input("Lutfen silmek istediginiz filmin adini yaziniz: ")
+    for movie in saved_movies:
+        if movie["movie_name"] == deleted_movie:
+            saved_movies.remove(movie)
+            with open("movielist.json", "w", encoding="utf-8") as json_dosyasi:
+                json.dump(saved_movies, json_dosyasi, ensure_ascii=False, indent=4)
+            movie_found = True
+        if movie_found == False:
+            print("Aradiginiz film bulunamistir")
+
+if user == "3":
+    movie_want_to_updated = input(
+        "Guncellemek istediginiz filmin adini giriniz: ")
+    movie_found = False
+    for movie in saved_movies:  # for movie in saved_movies:
+        if movie["movie_name"] == movie_want_to_updated:
+            print("Filmin adini guncellemek icin 1'e, filmin yonetmenini guncellemek icin 2'ye, filmin yayin yilini guncellemek icin 3'e, filmin turunu guncellemek icin 4'e basiniz!")
+            user_choice = input(
+                "Lutfen yapmak istediginiz islem icin bir secenege basiniz: ")
+            if user_choice == "1":
+                new_movie_name = input("Lutfen Yeni Film Adi Giriniz: ")
+                movie["movie_name"] = new_movie_name
+
+                with open("movielist.json", "w", encoding="utf-8") as json_dosyasi:
+                    json.dump(saved_movies, json_dosyasi, ensure_ascii=False, indent=4)
+
+                movie_found=True
+            if user_choice=="2":
+                new_director=input("Lutfen Yeni yonetmen adini gir: ")
+                movie["movie_director_name"] =new_director
+                with open("movielist.json", "w", encoding="utf-8") as json_dosyasi:
+                    json.dump(saved_movies, json_dosyasi, ensure_ascii=False, indent=4)
+                movie_found=True
+            if user_choice=="3":
+                new_movie_year=input("Yeni Film yilini giriniz: ")
+                movie["movie_year"]=new_movie_year
+                with open("movielist.json", "w", encoding="utf-8") as json_dosyasi:
+                    json.dump(saved_movies, json_dosyasi, ensure_ascii=False, indent=4)
+                movie_found=True
+            if user_choice=="4":
+                new_movie_type=input("Filmin yeni turunu giriniz: ")
+                movie["movie_type"]=new_movie_type
+                with open("movielist.json", "w", encoding="utf-8") as json_dosyasi:
+                    json.dump(saved_movies, json_dosyasi, ensure_ascii=False, indent=4)
+                movie_found=True
+
+    print(saved_movies)
+    if not movie_found:
+        print("Aradiginiz Film Bulunamadi")
+
+if user == "4":
+    print("Uygulamanizda bulunan filmler: ")
+    
+    for movie in saved_movies:
+        
+        print(f"Film Adi:{movie['movie_name']}, Filmin Yonetmeni:{movie['movie_director_name']}, Filmin Turu:{movie['movie_type']}, Filmin yayin yili:{movie['movie_year']}")
+
+
+
+#Question 3 
+
+cust={
+    1:{'name': 'Ford',
+    'sirname': 'Mustang',
+    'email': "for@mustang",
+    'phone':123445},
+    2:{'name': 'reno',
+    'sirname': 'euorpe',
+    'email': "reno@euora",
+    'phone':3445454}
+}
+lst=["First name:","Sirname:","Email:","Phone number:"]
+key_word=["name","sirname","email","phone"]
+nex=2
+while True:
+    print("1-Add new customer")
+    print("2-Update customer")
+    print("3-Delete the customer")
+    print("4-List all the customers")
+    print("5-Logout\n")
+
+    choose=int(input("which operation would like to do?:"))
+
+    if 0<choose<6:
+        match choose:
+            case 1:
+                
+                request=[]
+
+                
+
+                for item in lst:
+                    request.append(input(f"{item}"))
+                
+                nex+=nex
+                cust[nex]={}
+                for index, item in enumerate(key_word):
+                    cust[nex][item]=request[index]
+                print("\nNew customer added.\n\n\n")
+                
+            case 2:
+                keep_going=True
+                while keep_going:
+                    cust_id=int(input("Enter the customer ID:"))
+                    
+
+                    
+                    if cust_id in cust:
+                        request=[]
+
+                        for item in lst:
+                            request.append(input(f"{item}"))
+                        
+                        
+                        for index, item in enumerate(key_word):
+                            cust[cust_id][item]=request[index]
+                        print(f"\nCustomerID {cust_id} updated\n\n")
+                        break
+
+
+
+                    else:
+                        print("Invalid Customer id\n")
+                        while True:
+                            exit=input("Do you want to exit (Y/N):\n").lower()
+                            if exit=="y":
+                                keep_going=False
+                                break
+                                
+                            elif exit=="n":
+                                
+                                break
+                            else:
+                                print("Wrong choice")
+                            
+
+            case 3:
+                del_id=int(input("Please enter the id of Customer:"))
+
+                
+                get_id = cust.pop(del_id, "None")
+
+                if get_id=="None":
+                    print("\nWrong ID number\n")
+                else:
+                    print(f"\nCustomer ID number {del_id} deleted\n")
+    
+            case 4:
+                if len(cust)>0:
+                    for i in cust:
+                        
+                        print("-"*30)
+                        print(f"Cusmoter ID:{i}\nCustomer name:{cust[i]["name"]}\nCustomer Sirname:{cust[i]["sirname"]}\nEmail:{cust[i]["email"]}\nPhone:{cust[i]["phone"]}\n")
+                    
+                
+                else:
+                    print("Customer list is empty")
+            case 5:
+                break
+
+
+
+    else:
+        print("invalid choose")