feat: iImplement the laptop exercise.

Author: jamallaqdiem

prep-exercises/enums.py

@@ -0,0 +1,95 @@
+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
+
+
+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=OperatingSystem.UBUNTU),
+    Person(name="Eliza", age=34, preferred_operating_system=OperatingSystem.ARCH),
+]
+
+laptops = [
+    Laptop(id=1, manufacturer="Dell", model="XPS", screen_size_in_inches=13, operating_system=OperatingSystem.ARCH),
+    Laptop(id=2, manufacturer="Dell", model="XPS", screen_size_in_inches=15, operating_system=OperatingSystem.UBUNTU),
+    Laptop(id=3, manufacturer="Dell", model="XPS", screen_size_in_inches=15, operating_system=OperatingSystem.UBUNTU),
+    Laptop(id=4, manufacturer="Apple", model="macBook", screen_size_in_inches=13, operating_system=OperatingSystem.MACOS),
+    Laptop(id=5, manufacturer="Dell", model="XPS", screen_size_in_inches=13, operating_system=OperatingSystem.ARCH)
+]
+
+
+user_name = input(f"PLease enter your name: ")
+
+user_age = input(f"PLease enter your age: ")
+try :
+    user_age_int = int(user_age)
+except ValueError :
+    sys.stderr.write(f" Error: {user_age} should be an number")
+    sys.exit(1)
+    
+user_os = input(f"PLease enter your preferred os: ")
+try: 
+   os_type = OperatingSystem(user_os)
+    
+except ValueError :
+    sys.stderr.write(f"Error: {user_os}  should be a valid OS")
+    sys.exit(1)    
+
+
+new_data = Person(user_name,user_age_int,os_type)
+amount_os =find_possible_laptops(laptops,new_data)
+len_os =len(amount_os)
+print(f"we found {len_os} available")
+
+counts ={}
+for os in OperatingSystem:
+    count =0
+    
+    for laptop in laptops:
+        if laptop.operating_system ==os:
+            count+=1
+        counts[os]=count    
+        
+max_value= max(counts.values())
+better_choices = [max_value]
+
+better_choices=[]
+for os, count in counts.items():
+    if count == max_value:
+        better_choices.append(os.value)
+        
+
+multi_options = " OR ".join(better_choices)
+
+if max_value > len_os:
+    print(f"We have better choices, you should consider: {multi_options}")
+elif max_value==len_os :
+    print(f"we have multiple choices: {multi_options}, however {os_type.value} is still a good choice.")