Tuve algunos problemas de sintaxis pero los resolvi. Gracias ^^

userEnBD = "sielle"
passwordEnBD = "123456"
balance = 1000

def validateUser(u, c):
  if u == userEnBD and c == passwordEnBD:
    return True
  return False

def login():
  print("Welcome to Sielle's Bank!")
  user = input("Enter your Username ")
  password = input("Enter your Password ")
  return validateUser(user, password)

def withraw(value):
  if value > balance: 
    return False, balance

  return True, balance - value

def deposit(value):
  return True, balance + value

def action(option):
  if option == 1:
    value = int(input("Please, Write the amount to Deposit "))
    return deposit(value)

  if option == 2:
    value = int(input("Please, Write the amount to Withraw "))
    return withraw(value)

  return False, balance

def run():
  if not login():
    print("Invalid user or password")
    return

  print("What would you like to do?")
  option = int(input("1. Deposit or 2.  Withraw "))

  ok, balance = action(option)
  if not ok:
    print("Sorry, We cant proccess the transaction, balance:", balance)
  else:
    print("Action carried out successfully! Your new Balance is:", balance)

run()

Tuve algunos problemas de sintaxis pero los resolvi. Gracias ^^

userEnBD = "sielle"
passwordEnBD = "123456"
balance = 1000

def validateUser(u, c):
  if u == userEnBD and c == passwordEnBD:
    return True
  return False

def login():
  print("Welcome to Sielle's Bank!")
  user = input("Enter your Username ")
  password = input("Enter your Password ")
  return validateUser(user, password)

def withraw(value):
  if value > balance: 
    return False, balance

  return True, balance - value

def deposit(value):
  return True, balance + value

def action(option):
  if option == 1:
    value = int(input("Please, Write the amount to Deposit "))
    return deposit(value)

  if option == 2:
    value = int(input("Please, Write the amount to Withraw "))
    return withraw(value)

  return False, balance

def run():
  if not login():
    print("Invalid user or password")
    return

  print("What would you like to do?")
  option = int(input("1. Deposit or 2.  Withraw "))

  ok, balance = action(option)
  if not ok:
    print("Sorry, We cant proccess the transaction, balance:", balance)
  else:
    print("Action carried out successfully! Your new Balance is:", balance)

run()

Tuve algunos problemas de sintaxis pero los resolvi. Gracias ^^

userEnBD = "sielle"
passwordEnBD = "123456"
balance = 1000

def validateUser(u, c):
  if u == userEnBD and c == passwordEnBD:
    return True
  return False

def login():
  print("Welcome to Sielle's Bank!")
  user = input("Enter your Username ")
  password = input("Enter your Password ")
  return validateUser(user, password)

def withraw(value):
  if value > balance: 
    return False, balance

  return True, balance - value

def deposit(value):
  return True, balance + value

def action(option):
  if option == 1:
    value = int(input("Please, Write the amount to Deposit "))
    return deposit(value)

  if option == 2:
    value = int(input("Please, Write the amount to Withraw "))
    return withraw(value)

  return False, balance

def run():
  if not login():
    print("Invalid user or password")
    return

  print("What would you like to do?")
  option = int(input("1. Deposit or 2.  Withraw "))

  ok, balance = action(option)
  if not ok:
    print("Sorry, We cant proccess the transaction, balance:", balance)
  else:
    print("Action carried out successfully! Your new Balance is:", balance)

run()