From 2d6dd408a4c6f361ddaa4e674ae998ad6bd320d3 Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 23 Jul 2026 23:06:18 +0100
Subject: [PATCH 01/10] done

---
 .gitignore | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.gitignore b/.gitignore
index c4234ab74..5bb64fa54 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,7 @@
+
 node_modules
 testoutput.txt
+
+.venv/
+__pycache__/
+*.pyc

From 20478fbec2a940067c1625e964e1f629aa24ec6d Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 30 Jul 2026 10:02:27 +0100
Subject: [PATCH 02/10] update exercises

---
 Spring 5 exercises/checktype.py   | 33 +++++++++++++++++++++++++++++++
 Spring 5 exercises/type_exaple.py | 17 ++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 Spring 5 exercises/checktype.py
 create mode 100644 Spring 5 exercises/type_exaple.py

diff --git a/Spring 5 exercises/checktype.py b/Spring 5 exercises/checktype.py
new file mode 100644
index 000000000..26d42da0f
--- /dev/null
+++ b/Spring 5 exercises/checktype.py	
@@ -0,0 +1,33 @@
+def open_account(balances, name, amount):
+    balances[name] = amount
+
+def sum_balances(accounts):
+    total = 0
+    for name, pence in accounts.items():
+        print(f"{name} had balance {pence}")
+        total += pence
+    return total
+
+def format_pence_as_string(total_pence):
+    if total_pence < 100:
+        return f"{total_pence}p"
+    pounds = int(total_pence / 100)
+    pence = total_pence % 100
+    return f"£{pounds}.{pence:02d}"
+
+balances = {
+    "Sima": 700,
+    "Linn": 545,
+    "Georg": 831,
+}
+
+open_account(balances,"Tobi", 913)
+open_account(balances,"Olya", 713)
+
+total_pence = sum_balances(balances)
+total_string = format_pence_as_string(total_pence)
+
+print(f"The bank accounts total {total_string}")
+
+ # i amended three errors from original code from prep, line 28 function name is format_pence-as_string rather than format_pence_as_str, line 24 ad 25, supposed
+ # three arguments instead of 2, so i add balances when we call open_account and also call open_account amount should be integer rather than string or decimal
\ No newline at end of file
diff --git a/Spring 5 exercises/type_exaple.py b/Spring 5 exercises/type_exaple.py
new file mode 100644
index 000000000..c166df9ab
--- /dev/null
+++ b/Spring 5 exercises/type_exaple.py	
@@ -0,0 +1,17 @@
+def double(number):
+    return number * 3
+
+print(double(10))
+
+# Because double conflicts with multipying 3 so we can change function name to 'triple' or '*2'
+
+def triple(number):
+    return number * 3
+
+print(triple(10))
+
+
+def double(number):
+    return number * 2
+
+print(double(10))

From 8a8c9ab5af39d59ed98a3f6f7d708905994b5bde Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 30 Jul 2026 10:42:30 +0100
Subject: [PATCH 03/10] code error

---
 Spring 5 exercises/class.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Spring 5 exercises/class.py

diff --git a/Spring 5 exercises/class.py b/Spring 5 exercises/class.py
new file mode 100644
index 000000000..aaf7f6de1
--- /dev/null
+++ b/Spring 5 exercises/class.py	
@@ -0,0 +1,21 @@
+class Person:
+    def __init__(self, name: str, age: int, preferred_operating_system: str):
+        self.name = name
+        self.age = age
+        self.preferred_operating_system = preferred_operating_system
+
+imran = Person("Imran", 22, "Ubuntu")
+print(imran.name)
+
+eliza = Person("Eliza", 34, "Arch Linux")
+print(eliza.name)
+
+def is_adult(person: Person) -> bool:
+    return person.age >= 18
+
+print(is_adult(imran))
+
+def homeadress(person :Person):
+    return person.address 
+
+print(homeadress(eliza))
\ No newline at end of file

From 998fc6c3da478f4ba4a0b496f8a1b637806317bf Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 30 Jul 2026 10:46:20 +0100
Subject: [PATCH 04/10] add address

---
 Spring 5 exercises/class.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/Spring 5 exercises/class.py b/Spring 5 exercises/class.py
index aaf7f6de1..ff384ce93 100644
--- a/Spring 5 exercises/class.py	
+++ b/Spring 5 exercises/class.py	
@@ -1,13 +1,14 @@
 class Person:
-    def __init__(self, name: str, age: int, preferred_operating_system: str):
+    def __init__(self, name: str, age: int, preferred_operating_system: str,address:str):
         self.name = name
         self.age = age
         self.preferred_operating_system = preferred_operating_system
+        self.address=address
 
-imran = Person("Imran", 22, "Ubuntu")
+imran = Person("Imran", 22, "Ubuntu", "23 main raod")
 print(imran.name)
 
-eliza = Person("Eliza", 34, "Arch Linux")
+eliza = Person("Eliza", 34, "Arch Linux","32 divert way")
 print(eliza.name)
 
 def is_adult(person: Person) -> bool:
@@ -15,7 +16,7 @@ def is_adult(person: Person) -> bool:
 
 print(is_adult(imran))
 
-def homeadress(person :Person):
+def home_address(person :Person):
     return person.address 
 
-print(homeadress(eliza))
\ No newline at end of file
+print(home_address(eliza))

From 2caed1ebf3ae5b1ff16c817291f92c8fc7226997 Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 30 Jul 2026 12:37:23 +0100
Subject: [PATCH 05/10] compete methods

---
 Spring 5 exercises/methods.py | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Spring 5 exercises/methods.py

diff --git a/Spring 5 exercises/methods.py b/Spring 5 exercises/methods.py
new file mode 100644
index 000000000..e2013be6d
--- /dev/null
+++ b/Spring 5 exercises/methods.py	
@@ -0,0 +1,29 @@
+ # Think of the advantages of using methods instead of free functions:
+ # Better organization, More readable code, Easier maintenance,Better editor support (autocomplete),Code reuse across all instances of the class
+ # Ease of documentation: Related data and behavior are grouped together, making the class easier to understand.
+ # Encapsulation: The implementation can change without affecting the rest of the program, as long as the method's interface stays the same.
+
+from datetime import date
+
+
+class Person:
+    def __init__(self, name: str, date_of_birth:date, preferred_operating_system: str):
+        self.name = name
+        self.date_of_birth = date_of_birth
+        self.preferred_operating_system = preferred_operating_system
+
+    def is_adult(self):
+        today= date.today()
+
+        age=today.year- self.date_of_birth .year
+
+        if(today.month, today.day) < (self.date_of_birth.month, self.date_of_birth.day):
+           age-=1 
+
+        return age>=18
+    
+imaran = Person("Imaran",date(2003,1,5), "Ubuntun")
+eliza = Person("Eliza",date(2012,11,25), "Ubuntun")
+
+print(imaran.is_adult())
+print(eliza.is_adult())
\ No newline at end of file

From 1be1836ac88ca83106ad7930a918e78fcd6212c6 Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 30 Jul 2026 14:39:16 +0100
Subject: [PATCH 06/10] complete dataclass

---
 Spring 5 exercises/dataclass.py | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Spring 5 exercises/dataclass.py

diff --git a/Spring 5 exercises/dataclass.py b/Spring 5 exercises/dataclass.py
new file mode 100644
index 000000000..44e265958
--- /dev/null
+++ b/Spring 5 exercises/dataclass.py	
@@ -0,0 +1,28 @@
+from dataclasses import dataclass
+from datetime import date
+
+@dataclass
+class Person:
+    name : str
+    date_of_birth: date
+    preferred_operating_system: str
+
+    def is_adult(self) -> bool :
+        today = date.today()
+        age = today.year - self.date_of_birth.year
+
+        if (today.month, today.day) < (self.date_of_birth.month, self.date_of_birth.day):
+            age-=1
+
+        return age>=18   
+
+imaran= Person("Imaran", date(2011,11,23), "Ubuntun")  
+imara2= Person("Imaran", date(2011,11,23), "Ubuntun") 
+
+print(imaran)
+print(imara2)
+print(imaran==imara2)
+print(imaran.is_adult())
+
+
+           

From 5728b92903c05cde5ad48cdb3d44ac9b654952ec Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Thu, 30 Jul 2026 15:46:01 +0100
Subject: [PATCH 07/10] complete generics

---
 Spring 5 exercises/generics.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 Spring 5 exercises/generics.py

diff --git a/Spring 5 exercises/generics.py b/Spring 5 exercises/generics.py
new file mode 100644
index 000000000..0c5f4be20
--- /dev/null
+++ b/Spring 5 exercises/generics.py	
@@ -0,0 +1,20 @@
+from dataclasses import dataclass
+from typing import List
+
+@dataclass(frozen=True)
+class Person:
+    name: str
+    age : int
+    children: List["Person"]
+
+fatma = Person(name="Fatma", age=5, children=[])
+aisha = Person(name="Aisha", age= 1, children=[])
+
+imran = Person(name="Imran",age = 32, children=[fatma, aisha])
+
+def print_family_tree(person: Person) -> None:
+    print(person.name)
+    for child in person.children:
+        print(f"- {child.name} ({child.age})")
+
+print_family_tree(imran)
\ No newline at end of file

From 24c52649b024b226d55b3f32c72a1bdc69d39a80 Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Fri, 31 Jul 2026 05:56:38 +0100
Subject: [PATCH 08/10] complete refactor

---
 Spring 5 exercises/refactor.py | 42 ++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Spring 5 exercises/refactor.py

diff --git a/Spring 5 exercises/refactor.py b/Spring 5 exercises/refactor.py
new file mode 100644
index 000000000..c3798bb5e
--- /dev/null
+++ b/Spring 5 exercises/refactor.py	
@@ -0,0 +1,42 @@
+from dataclasses import dataclass
+from typing import List
+
+@dataclass(frozen=True)
+class Person:
+    name: str
+    age: int
+    preferred_operating_system: str
+
+
+@dataclass(frozen=True)
+class Laptop:
+    id: int
+    manufacturer: str
+    model: str
+    screen_size_in_inches: float
+    operating_system: List [str]
+
+
+def find_possible_laptops(laptops: List[Laptop], person: Person) -> List[Laptop]:
+    possible_laptops = []
+    for laptop in laptops:
+        if laptop.operating_system == person.preferred_operating_system:
+            possible_laptops.append(laptop)
+    return possible_laptops
+
+
+people = [
+    Person(name="Imran", age=22, preferred_operating_system="Ubuntu"),
+    Person(name="Eliza", age=34, preferred_operating_system="Arch Linux"),
+]
+
+laptops = [
+    Laptop(id=1, manufacturer="Dell", model="XPS", screen_size_in_inches=13, operating_system=["Arch Linux"]),
+    Laptop(id=2, manufacturer="Dell", model="XPS", screen_size_in_inches=15, operating_system= ["Ubuntu"]),
+    Laptop(id=3, manufacturer="Dell", model="XPS", screen_size_in_inches=15, operating_system=["ubuntu"]),
+    Laptop(id=4, manufacturer="Apple", model="macBook", screen_size_in_inches=13, operating_system=["macOS"]),
+]
+
+for person in people:
+    possible_laptops = find_possible_laptops(laptops, person)
+    print(f"Possible laptops for {person.name}: {possible_laptops}")
\ No newline at end of file

From 3fee2a3f6ec60fff30bb4a604ea78fdf7f41e9a9 Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Fri, 31 Jul 2026 07:34:29 +0100
Subject: [PATCH 09/10] complete enum

---
 Spring 5 exercises/enum.py | 89 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 Spring 5 exercises/enum.py

diff --git a/Spring 5 exercises/enum.py b/Spring 5 exercises/enum.py
new file mode 100644
index 000000000..cbe61103a
--- /dev/null
+++ b/Spring 5 exercises/enum.py	
@@ -0,0 +1,89 @@
+from dataclasses import dataclass
+from enum import Enum
+from typing import List
+import sys
+
+
+class OperatingSystem(Enum):
+    MACOS = "macOS"
+    ARCH = "Arch Linux"
+    UBUNTU = "Ubuntu"
+
+
+@dataclass(frozen=True)
+class Person:
+    name: str
+    age: int
+    preferred_operating_system: OperatingSystem
+
+
+@dataclass(frozen=True)
+class Laptop:
+    id: int
+    manufacturer: str
+    model: str
+    screen_size_in_inches: float
+    operating_system: OperatingSystem
+
+
+laptops = [
+    Laptop(1, "Dell", "XPS", 13, OperatingSystem.ARCH),
+    Laptop(2, "Dell", "XPS", 15, OperatingSystem.UBUNTU),
+    Laptop(3, "Dell", "XPS", 15, OperatingSystem.UBUNTU),
+    Laptop(4, "Apple", "MacBook", 13, OperatingSystem.MACOS),
+]
+
+
+# Read name
+name = input("Enter your name: ")
+
+# Read and convert age
+try:
+    age = int(input("Enter your age: "))
+except ValueError:
+    print("Error: age must be a whole number.", file=sys.stderr)
+    sys.exit(1)
+
+# Read and convert operating system
+print("Choose an operating system:")
+print("- Ubuntu")
+print("- Arch Linux")
+print("- macOS")
+
+os_input = input("Preferred operating system: ")
+
+try:
+    preferred_os = OperatingSystem(os_input)
+except ValueError:
+    print("Error: invalid operating system.", file=sys.stderr)
+    sys.exit(1)
+
+# Create the person
+person = Person(name, age, preferred_os)
+
+# Find matching laptops
+matching = [
+    laptop
+    for laptop in laptops
+    if laptop.operating_system == person.preferred_operating_system
+]
+
+print(
+    f"\nThe library has {len(matching)} laptop(s) running "
+    f"{person.preferred_operating_system.value}."
+)
+
+# Count laptops for each operating system
+counts = {}
+
+for laptop in laptops:
+    os = laptop.operating_system
+    counts[os] = counts.get(os, 0) + 1
+
+best_os = max(counts, key=counts.get)
+
+if best_os != person.preferred_operating_system:
+    print(
+        f"If you're willing to accept {best_os.value}, "
+        f"there are {counts[best_os]} laptops available."
+    )
\ No newline at end of file

From 81495572ba022b7526cc781e02ba2b527a8680a4 Mon Sep 17 00:00:00 2001
From: pathywang <pathywang@gmail.com>
Date: Fri, 31 Jul 2026 07:58:38 +0100
Subject: [PATCH 10/10] complete inheritance

---
 Spring 5 exercises/inheritance.py            | 36 ++++++++++++++++++++
 Spring 5 exercises/{enum.py => operation.py} |  0
 2 files changed, 36 insertions(+)
 create mode 100644 Spring 5 exercises/inheritance.py
 rename Spring 5 exercises/{enum.py => operation.py} (100%)

diff --git a/Spring 5 exercises/inheritance.py b/Spring 5 exercises/inheritance.py
new file mode 100644
index 000000000..9b70e7967
--- /dev/null
+++ b/Spring 5 exercises/inheritance.py	
@@ -0,0 +1,36 @@
+class Parent:
+    def __init__(self, first_name: str, last_name: str):
+        self.first_name = first_name
+        self.last_name = last_name
+
+    def get_full_name(self) -> str:
+        return f"{self.first_name} {self.last_name}"
+    
+    def change_last_name(self, last_name: str) -> None:
+        self.last_name = last_name
+
+
+class Child(Parent):
+    def __init__(self, first_name: str, last_name: str):
+        super().__init__(first_name, last_name)
+        self.previous_last_names = []
+
+    def change_last_name(self, last_name) -> None:
+        self.previous_last_names.append(self.last_name)
+        self.last_name = last_name
+
+    def get_full_name(self) -> str:
+        suffix = ""
+        if len(self.previous_last_names) > 0:
+            suffix = f" (née {self.previous_last_names[0]})"
+        return f"{self.first_name} {self.last_name}{suffix}"
+
+person1 = Child("Elizaveta", "Alekseeva")
+print(person1.get_full_name())
+person1.change_last_name("Tyurina")
+print(person1.get_full_name())
+
+person2 = Parent("Elizaveta", "Alekseeva")
+print(person2.get_full_name())
+person2.change_last_name("Tyurina")
+print(person2.get_full_name())
\ No newline at end of file
diff --git a/Spring 5 exercises/enum.py b/Spring 5 exercises/operation.py
similarity index 100%
rename from Spring 5 exercises/enum.py
rename to Spring 5 exercises/operation.py