create and use python classes

class Person:
  def __init__(self, _name, _age):
    self.name = _name
    self.age = _age
   
  def sayHi(self):
    print('Hello, my name is ' + self.name + ' and I am ' + self.age + ' years old!')
    
p1 = Person('Bob', 25)
p1.sayHi() # Prints: Hello, my name is Bob and I am 25 years old!

class Mammal:
    def __init__(self, name):
        self.name = name

    def walk(self):
        print(self.name + " is going for a walk")


class Dog(Mammal):
    def bark(self):
        print("bark!")


class Cat(Mammal):
    def meow(self):
        print("meow!")


dog1 = Dog("Spot")
dog1.walk()
dog1.bark()
cat1 = Cat("Juniper")
cat1.walk()
cat1.meow()

class car():
  gas=100
  def __init__(self, mpg, position, gast):
    gas=gast
    self.mpg=mpg
    self.position=position
  def move(self, miles):
    if (self.mpg*gas>miles):
      print("You don't have enough gas")
    elif(self.mpg*gas<=miles):
      self.position+=miles
      gas-=(1/self.mpg)*miles
  def get_gas(self):
    	if(self.position %50==0):
        	gas=100
        else:
          	print("You can't do that")
class Truck(car):
  def __init__(self, carry_capacity):
    	self.carry_capactiy=carrycapacity
  def carry(self, load):
    	if(load<=carry_capacity):
        	print("Successfully carried")
        else:
          	print("Failed to carry")
Car=car(5, 0, 100)
Car.move(50)
Car.get_gas()
truck=Truck(5)
truck.get_gas()
truck.carry()