出于某種原因，在我的水果刮刀中，我無法從 listify 功能訪問任何內容。
我收到一個錯誤，例如：NameError: name 'family' is not defined.
而且我無法弄清楚我的代碼有什么問題 - 我的功能是壞的，還是我在類做錯了什么？
import requests
import json
import random
import pickle
class FruitScraper():
def __init__(self):
self.name = []
self.id = []
self.family = []
self.genus = []
self.order = []
self.carbohydrates = []
self.protein = []
self.fat = []
self.calories = []
self.sugar = []
def scrape_all_fruits(self):
data_list = []
try:
for ID in range(1, 10):
url = f'https://www.fruityvice.com/api/fruit/{ID}'
response = requests.get(url)
data = response.json()
data_list.append(data)
except:
pass
return data_list
def listify(self, stats):
alist = json.dumps(self.scrape_all_fruits())
jsonSTr = json.loads(alist)
for i in jsonSTr:
try:
self.name.append(i['name'])
self.id.append(i['id'])
self.family.append(i['family'])
self.genus.append(i['genus'])
self.order.append(i['order'])
self.carbohydrates.append(i['nutritions']['carbohydrates'])
self.protein.append(i['nutritions']['protein'])
self.fat.append(i['nutritions']['fat'])
self.calories.append(i['nutritions']['calories'])
self.sugar.append(i['nutritions']['sugar'])
except:
pass
return stats
def get_summary(self):
for i in self.listify(zip(self.fat, self.protein, self.calories, self.sugar, self.carbohydrates, self.name)):
nutr_stats = f'\nNutrients maximum statistics:\nFat: {max(self.fat)}\nProtein: {max(self.protein)}\nCarbohydrates: {max(self.carbohydrates)}\nCalories: {max(self.calories)}\nSugar: {max(self.sugar)}' \
f'\nNutrients minimum statistics:\nFat: {min(self.fat)}\nProtein: {min(self.protein)}\nCarbohydrates: {min(self.carbohydrates)}\nCalories: {min(self.calories)}\nSugar: {min(self.sugar)}' \
f'\nTotal fruits scraped: {len(self.name)}'
return nutr_stats
Scraped_info = FruitScraper().scrape_all_fruits()
Listified_info = FruitScraper().listify(family)
Fruits_statistics = FruitScraper().get_summary()
這是我第一次做 OOP。
uj5u.com熱心網友回復：
請考慮改變這個
Scraped_info = FruitScraper().scrape_all_fruits()
Listified_info = FruitScraper().listify(family)
Fruits_statistics = FruitScraper().get_summary()
至
myScraper = FruitScraper()
Scraped_info = myScraper.scrape_all_fruits()
myScraper.listify()
Fruits_statistics = myScraper.get_summary()
否則，您將創建此類的三個不同物件，并在運行單個方法一次后丟棄它們及其所有屬性。
family這對于在這行代碼中定義也可能很關鍵：
Listified_info = myScraper.listify(family)
但我看不出您打算如何stats在方法中使用該引數listify()。它只是收到并退回。我建議你改變：
def listify(self, stats):
至
def listify(self):
并洗掉
return stats
如果你想在回傳的這個類的物件中獲取這些串列listify()，你可以執行以下操作（但這不是 OOP 的做事方式）：
import requests
import json
import copy
class FruitScraper():
def __init__(self):
self.name = []
self.id = []
self.family = []
self.genus = []
self.order = []
self.carbohydrates = []
self.protein = []
self.fat = []
self.calories = []
self.sugar = []
def collect_all_lists(self):
self.allLists = dict('name': self.name, 'id': self.id, 'family': self.family, 'genus': self.genus, 'order': self.order, 'carbohydrates': self.carbohydrates, 'protein': self.protein, 'fat': self.fat, 'calories': self.calories, 'sugar': self.sugar)
def scrape_all_fruits(self):
data_list = []
try:
for ID in range(1, 10):
url = f'https://www.fruityvice.com/api/fruit/{ID}'
response = requests.get(url)
data = response.json()
data_list.append(data)
except:
pass
return data_list
def listify(self):
alist = json.dumps(self.scrape_all_fruits())
jsonSTr = json.loads(alist)
for i in jsonSTr:
try:
self.name.append(i['name'])
self.id.append(i['id'])
self.family.append(i['family'])
self.genus.append(i['genus'])
self.order.append(i['order'])
self.carbohydrates.append(i['nutritions']['carbohydrates'])
self.protein.append(i['nutritions']['protein'])
self.fat.append(i['nutritions']['fat'])
self.calories.append(i['nutritions']['calories'])
self.sugar.append(i['nutritions']['sugar'])
except:
pass
self.collect_all_lists()
return copy.deepcopy(self.allLists)
def get_summary(self):
for i in self.listify(zip(self.fat, self.protein, self.calories, self.sugar, self.carbohydrates, self.name)):
nutr_stats = f'\nNutrients maximum statistics:\nFat: {max(self.fat)}\nProtein: {max(self.protein)}\nCarbohydrates: {max(self.carbohydrates)}\nCalories: {max(self.calories)}\nSugar: {max(self.sugar)}' \
f'\nNutrients minimum statistics:\nFat: {min(self.fat)}\nProtein: {min(self.protein)}\nCarbohydrates: {min(self.carbohydrates)}\nCalories: {min(self.calories)}\nSugar: {min(self.sugar)}' \
f'\nTotal fruits scraped: {len(self.name)}'
return nutr_stats
myScraper = FruitScraper()
Scraped_info = myScraper.scrape_all_fruits()
Listified_info = myScraper.listify()
Fruits_statistics = myScraper.get_summary()
轉載請註明出處，本文鏈接：https://www.uj5u.com/qita/506837.html
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