# 1- Crie uma classe chamada ContaBancaria com um construtor que aceita os parâmetros titular e saldo.
class BankAccount:
def __init__(self, account_holder: str, balance):
self._account_holder = account_holder
if not isinstance(balance, (int, float)):
raise TypeError("Balance must be a valid number.")
if balance < 0:
raise ValueError("Balance cannot be negative.")
self._balance = balance
# 2- Inicie o atributo ativo como False por padrão.
self._active = False
@property
def account_holder(self):
return self._account_holder
@property
def balance(self):
return self._balance
@property
def active(self):
return "yes" if self._active else "no"
# 3- Na classe ContaBancaria, adicione um método especial __str__ que retorna uma mensagem formatada com o titular e o saldo da conta.
def __str__(self):
return f"""Accessing Bank account:
account holder: {self.account_holder}
balance: US${self.balance}
"""
# 5- Adicione um [método de classe]chamado ativar_conta à classe ContaBancaria que define o atributo ativo como True.
# > Não é possível ativar um atributo de instância (como _active) por meio de um método de classe
def activate_account(self):
if self._active is False:
self._active = True
# 4- Crie duas instâncias da classe e imprima essas instâncias.
bank_account1 = BankAccount("Junior Santos", 500)
bank_account2 = BankAccount("Pedro Sampaio", 1000)
print(bank_account1)
print(bank_account2)
# 6- Crie uma instância da classe, chame o método de classe e imprima o valor de ativo.
bank_account3 = BankAccount("Mariana Lima", 600)
print(
f"{bank_account3.account_holder}'s Bank account is active? {bank_account3.active}"
)
bank_account3.activate_account()
print(f"Activating {bank_account3.account_holder}'s bank account")
print(
f"{bank_account3.account_holder}'s Bank account is active? {bank_account3.active}"
)
# 8- Crie uma instância da classe e imprima o valor da propriedade titular.
bank_account4 = BankAccount("Luciana Mariano", 5000)
print()
print(f"Account holder: {bank_account4.account_holder}")
# 9- Crie uma classe chamada ClienteBanco com um construtor que aceita 5 atributos.
class BankCustomer:
bank_phone_number = "55554444"
def __init__(
self,
full_name: str,
age: int,
email: str,
phone_number: str,
special_customer: bool = False,
):
self._full_name = full_name.strip()
self._age = age
self._email = email
self._phone_number = phone_number
self._special_customer = special_customer
@property
def full_name(self):
return self._full_name
@property
def age(self):
return self._age
@property
def email(self):
return self._email
@property
def phone_number(self):
return self._phone_number
@property
def special_customer(self):
return self._special_customer
def __str__(self):
especial = "Special Customer" if self.special_customer else "Regular Customer"
return f"""
Bank Customer
{'Full Name:':<15} {self.full_name}
{'Age:':<15} {self.age}
{'Email:':<15} {self.email}
{'Phone Number:':<15} {self.phone_number}
{'Customer Type:':<15} {especial}
"""
# 11- Crie um método de classe para a conta ClienteBanco.
@classmethod
def update_bank_phone_number(cls, new_number):
if new_number.isdigit() and len(new_number) >= 8:
cls.bank_phone_number = new_number
return True
return False
def show_result_update_bank_phone_number(number: str):
change_bank_number = BankCustomer.update_bank_phone_number(number)
if not change_bank_number:
print(
f"Failed to update phone number! Bank phone number: {BankCustomer.bank_phone_number}"
)
else:
print("Phone number updated successfully.")
print(f"Bank phone number: {BankCustomer.bank_phone_number}")
# 10- Instancie 3 objetos desta classe e atribua valores aos seus atributos através do método construtor.
alex = BankCustomer("Alex Silva", 50, "alex@email.com", "99998888")
hinata = BankCustomer("Hinata Shoyo", 16, "hinata@email.com", "77777777", True)
tobio = BankCustomer("Tobio Kageyama", 17, "tobio@email.com", "88888888", True)
print(alex)
print(hinata)
print(tobio)
print(f"Bank phone number: {BankCustomer.bank_phone_number}")
print()
print(
"Try to update bank phone number to an invalid number don't change the class attribute:"
)
show_result_update_bank_phone_number("5555")
print("\nUpdate bank phone number to a valid number, change the class attribute:")
show_result_update_bank_phone_number("55559999")
