Ejercicios nivel 0 - CurrencyConverter en C++ y los demás en Python

BankingSystem/pythonProject/main.py

@@ -0,0 +1,52 @@
+from models.Bank import Bank
+from models.User import User
+
+
+def load_initial_user():
+    user: User = User(username="cval0", password="tryHackMe")
+    return user
+
+
+def main():
+    bank: Bank = Bank()
+    bank.register_user(load_initial_user())
+    loop: bool = True
+    active_user = None
+    while loop:
+        option = bank.menu()
+        if option == 1:
+            username = input("Define username: ")
+            password = input("Password: ")
+            bank.register_user(User(username, password))
+        elif option == 2:
+            active_user = bank.login()
+        elif option == 3:
+            if active_user is not None:
+                amount = float(input("Withdraw amount: "))
+                active_user.withdraw(amount)
+            else:
+                print("Not logged in yet")
+        elif option == 4:
+            if active_user is not None:
+                amount = float(input("Deposit amount: "))
+                active_user.deposit(amount)
+            else:
+                print("Not logged in yet")
+        elif option == 5:
+            if active_user is not None:
+                destiny_user = input("Destiny user: ")
+                amount = float(input("Transfer amount: "))
+                bank.transfer(origin_account=active_user, destination_account=destiny_user, amount=amount)
+            else:
+                print("Not logged in yet")
+        elif option == 6:
+            if active_user is not None:
+                active_user.view()
+            else:
+                print("Not logged in yet")
+        else:
+            loop = False
+
+
+if __name__ == "__main__":
+    main()

BankingSystem/pythonProject/models/Bank.py

@@ -0,0 +1,71 @@
+from models.User import User
+
+
+class Bank(object):
+    users: dict[str, User]
+
+    def __init__(self, users=None):
+        if users is None:
+            users = {}
+        self.users = users
+
+    def menu(self):
+        print("BANKING SYSTEM")
+        print("1. Register new account")
+        print("2. Login")
+        print("3. Withdraw")
+        print("4. Deposit")
+        print("5. Transfer")
+        print("6. View")
+        option = int(input(">> "))
+        return option
+
+    def login(self) -> User:
+
+        attempts: int = 3
+        while attempts != 0:
+            username = input("Username: ")
+            password = input("Password: ")
+
+            if username not in self.users:
+                print("User not registered")
+                continue
+
+            user = self.users.get(username)
+
+            if user.username == username and user.password == password:
+                print("Successfully logged in")
+                return user
+            else:
+                print("Incorrect credentials")
+                attempts -= 1
+                if attempts == 0:
+                    user.is_blocked = True
+                    print("Your account will be blocked for security reasons")
+
+        return None
+
+    def register_user(self, user: User):
+        if user.username not in self.users.keys():
+            self.users.update({user.username: user})
+        else:
+            print("User already registered")
+
+    def transfer(self, origin_account: User, destination_account: str, amount: float) -> bool:
+
+        if origin_account.username not in list(self.users.keys()) or destination_account not in list(self.users.keys()):
+            print("Account not registered")
+            return False
+
+        if origin_account.balance < amount:
+            print("Not enough funds to perform transfer")
+            return False
+
+        if origin_account.is_blocked or self.users.get(destination_account).is_blocked:
+            print("Account blocked, transform cannot be performed")
+            return False
+
+        origin_account.withdraw(amount)
+        self.users.get(destination_account).deposit(amount)
+
+        return True

BankingSystem/pythonProject/models/User.py

@@ -0,0 +1,28 @@
+class User(object):
+    username: str
+    password: str
+    is_blocked: bool
+    balance: float = 2000
+
+    def __init__(self, username: str, password: str, is_blocked=False, balance=2000):
+        self.username = username
+        self.password = password
+        self.balance = balance
+        self.is_blocked = is_blocked
+
+    def deposit(self, amount: float) -> bool:
+        self.balance += amount
+        return True
+
+    def withdraw(self, amount: float) -> bool:
+        if self.balance - amount < 0:
+            print("Not enough available funds")
+            return False
+        else:
+            self.balance -= amount
+            return True
+
+    def view(self) -> None:
+        print(f"Your balance is {self.balance}")
+
+

FinanceManagement/main.py

@@ -0,0 +1,48 @@
+def main():
+    categories = [
+        "Medical expenses",
+        "Household expenses",
+        "Leisure",
+        "Education",
+        "Savings"
+    ]
+    print("-------FINANCE MANAGEMENT SYSTEM------")
+    income = float(input("Let us know your income: $"))
+    register_category: bool = True
+    expenses = dict()
+    while register_category:
+
+        option = input("Do you want to register an expense? y/n: ")
+        if option.upper() != "Y":
+            register_category = False
+            continue
+
+        for index, category in enumerate(categories):
+            print(f"{index + 1}. {category}")
+
+        option = int(input("Category: "))
+        if option > len(categories):
+            print("Error, fail on category input")
+        else:
+            print(f"Expense on {categories[option - 1]}")
+            amount = float(input("Expense amount: "))
+            expenses.update({categories[option - 1]: amount})
+
+    print("Registered epxenses: ")
+    print(expenses)
+    total_expense = sum(list(expenses.values()))
+    print(f"Total expense: {total_expense}" )
+
+    if total_expense - income == 0:
+        max_expense = max(list(expenses.values()))
+        max_index = list(expenses.values()).index(max_expense)
+        max_cat = list(expenses.keys())[max_index]
+        print(f"Reduce your expenses in {max_cat}")
+    elif total_expense - income > 0:
+        print("Improve your financial health")
+    else:
+        print("Congratulations!! You are saving money")
+
+
+if __name__ == "__main__":
+    main()