写一份复杂的python中类的方法
时间: 2024-01-26 08:03:20 浏览: 25
以下是一个复杂的Python类的方法,其中包含了多个函数和内部方法:
```python
class Car:
def __init__(self, make, model, year):
self.make = make
self.model = model
self.year = year
self.odometer_reading = 0
def get_descriptive_name(self):
long_name = f"{self.year} {self.make} {self.model}"
return long_name.title()
def read_odometer(self):
print(f"This car has {self.odometer_reading} miles on it.")
def update_odometer(self, mileage):
if mileage >= self.odometer_reading:
self.odometer_reading = mileage
else:
print("You can't roll back an odometer!")
def increment_odometer(self, miles):
self.odometer_reading += miles
def fill_gas_tank(self):
print("Gas tank is now full.")
def _calculate_mpg(self, miles, gallons):
return miles / gallons
def calculate_trip_cost(self, miles, gas_price_per_gallon):
gallons = miles / self._calculate_mpg(miles, gas_price_per_gallon)
cost = gallons * gas_price_per_gallon
return f"Trip cost: ${cost:.2f}"
```
这个类代表了一辆汽车,包含了车辆的制造商、型号和年份等属性,以及行驶里程、加油量等方法。其中,`_calculate_mpg()`方法是一个内部方法,用于计算汽车的平均油耗,而`calculate_trip_cost()`方法则是一个外部方法,用于计算汽车行驶一定里程所需的费用。