在学习python的面向对象时遇到了一个跨类调用的问题

Question

在学习面向对象的跨类调用时遇到了一些问题

```python
class Peason():
    def __init__(self, name):
        self.name = name

    def go_to(self, place, vehice):
        self.place = place
        self.vehice = vehice
        vehice.run()
        print(f"{self.name}驾驶{self.vehice.brand}{self.vehice}去{self.place}")


class Car():
    def __init__(self, brand):
        self.brand = brand
    def run(self):
        print("行驶")


lz = Peason("老张")
car = Car("奔驰")

lz.go_to("东北", "车")

######
```python
Traceback (most recent call last):
  File "/home/tarena/month01/day10/exercise2.py", line 55, in <module>
    lz.go_to("东北", "车")
  File "/home/tarena/month01/day10/exercise2.py", line 41, in go_to
    vehice.run()
AttributeError: 'str' object has no attribute 'run'

我尝试过在变量vehice前面加self 但是依然没有解决，还是会报相同的错

######正确赋值，并且能输出我想要的语句

Answer 1

class Peason():
    def __init__(self, name):
        self.name = name
        self.car=Car('奔驰')
    def go_to(self, place, vehice):
        self.place = place
        self.vehice = vehice
        self.car.run()
        print(f"{self.name}驾驶{self.car.brand}{self.vehice}去{self.place}")
 
 
class Car():
    def __init__(self, brand):
        self.brand = brand
    def run(self):
        print("行驶")
 
 
lz = Peason("老张")

lz.go_to("东北", "车")