我正在编写一个植物育种程序，到目前为止有点粗略，但这是我第一个面向对象的编程...
import requests
import random
class environment:
def __init__(self, weather = None, temperature = None, soil_type = None):
self.weather = weather
self.temperature = temperature
self.soil_type = soil_type
def get_weather(self):
self.zip_code = input("Enter your zip code to get weather info: ")
self.url = "http://api.openweathermap.org/data/2.5/forecast?appid=a9fed4c32128f18e6142d3bd49fb5f7d&units=metric&zip=" + self.zip_code
self.response = requests.get(self.url)
self.result = self.response.json()
if self.result["cod"] != "404":
self.weather = self.result['list'][0]['weather'][0]['description']
self.temperature = self.result['list'][0]['main']['temp']
print("Weather: {}".format(self.result['list'][0]['weather'][0]['description']))
if "rain" in self.weather.lower() and "drizzle" not in self.weather.lower():
print("You need to think about adjusting watering amount.")
elif "drizzle" in self.weather.lower():
print("You need to think about adjusting watering amount, but not much adjustment.")
elif "clouds" in self.weather.lower():
print("Moderate sunshine.")
elif "clear sky" in self.weather.lower():
print("Sunshine, sunshine, sunshine...")
print("Temperature: {} °C".format(self.result['list'][0]['main']['temp']))
if self.temperature >= 35:
print("Temperature is high.")
elif 35 > self.temperature >= 10:
print("Temperature is moderate.")
elif 10 > self.temperature >= 0:
print("Temperature is low.")
else:
print("Too low for the plant to survive.")
else:
print("Zip code not found.")
def choose_soil_type(self):
self.soil_type = input("Please choose soil type among these - alkaline, neutral, acidic: ")
class plants:
def __init__(self, preferred_sunshine = None, preferred_water = None, preferred_fertilizer = None, preferred_temp = None, preferred_soil = None):
self.preferred_sunshine = preferred_sunshine
self.preferred_water = preferred_water
self.preferred_fertilizer = preferred_fertilizer
self.preferred_temp = preferred_temp
self.preferred_soil = preferred_soil
def choose_plant(self):
self.choose = input("Please choose your plant to breed: ")
if self.choose == "lemon":
self.preferred_sunshine = 9
self.preferred_water = 5
self.preferred_fertilizer = 3
self.preferred_temp = "high"
self.preferred_soil = "neutral"
elif self.choose == "blueberry":
self.preferred_sunshine = 6
self.preferred_water = 8
self.preferred_fertilizer = 5
self.preferred_temp = "moderate"
self.preferred_soil = "acidic"
elif self.choose == "pear":
self.preferred_sunshine = 3
self.preferred_water = 3
self.preferred_fertilizer = 7
self.preferred_temp = "low"
self.preferred_soil = "alkaline"
else:
print("not a valid plant")
class treatment:
def __init__(self, water = 0, fertilizer = 0, weed = True):
self.water = water
self.fertilizer = fertilizer
self.weed = weed
def provide_water(self):
self.water = input("Please enter the amount of water: ")
if self.water == self.preferred_water:
self.water_score = 10
elif preferred_water - 2 <= self.water <= self.preferred_water + 2:
self.water_score = 7
else:
self.water_score = 4
return self.water_score
def provide_fertilizer(self):
self.fertilizer = input("Please enter the amount of fertilizer: ")
if self.fertilizer == self.preferred_fertilizer:
self.fertilizer_score = 10
elif preferred_fertilizer - 2 <= self.water <= self.preferred_fertilizer + 2:
self.fertilizer_score = 7
else:
self.fertilizer_score = 4
def remove_weed(self):
count = 0
while self.weed == True:
x = 1* random.random()
count += 1
if x < 0.3:
self.weed == False
print("You have removed the weeds", count, "times to help the plant grow. Good job!")
break
if count <= 3:
self.weed_score = 10
else:
self.weed_score = 5
a = environment()
a.get_weather()
a.choose_soil_type()
b = plants()
b.choose_plant()
c = treatment()
c.provide_water()
我想知道如何在类之间进行交互...
Enter your zip code to get weather info: 94560
Weather: light rain
You need to think about adjusting watering amount.
Temperature: 8.05 °C
Temperature is low.
Please choose soil type among these - alkaline, neutral, acidic: acidic
Please choose your plant to breed: lemon
Please enter the amount of water: 5
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-88-50fbdf0f3aa5> in <module>
123 b.choose_plant()
124 c = treatment()
--> 125 c.provide_water()
<ipython-input-88-50fbdf0f3aa5> in provide_water(self)
82 def provide_water(self):
83 self.water = input("Please enter the amount of water: ")
---> 84 if self.water == self.preferred_water:
85 self.water_score = 10
86 elif preferred_water - 2 <= self.water <= self.preferred_water + 2:
AttributeError: 'treatment' object has no attribute 'preferred_water'
该程序会产生如上所述的错误...我知道preferred_water不在处理对象中，但是我想根据我在“ choose_plant”函数中的选择，从“ plants”类中获取信息。 / p>
我也想根据天气情况调整治疗量。但是现在我的课是独立进行的，哈哈...我应该如何开始？ :)任何评论都会有所帮助。谢谢！
答案 0 :(得分：1)
在这一点上，treatment和plant实例彼此独立。在plant实例内部无法访问treatment数据。您想要的是相关的处理方式，以便treatment实例可以查看和使用plant实例。
因此，在您的treatment中，您想添加以下内容：
class treatment:
def __init__(self, plant, water = 0, fertilizer = 0, weed = True):
self.water = water
self.fertilizer = fertilizer
self.weed = weed
self.plant = plant
这意味着，在创建treatment对象时，它需要一个plant与之相关的treatment对象。
然后您将要创建一个这样的治疗实例：
b = plants()
c = treatment(b) # create treatment, while passing along the plant instance.
然后在provide_water函数中，您可以访问plant实例。
def provide_water(self):
self.water = input("Please enter the amount of water: ")
if self.water == self.plant.preferred_water:
self.water_score = 10