爬取数据和调整数据时列表索引超出范围
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【中文标题】爬取数据和调整数据时列表索引超出范围【英文标题】:list index out of range when crawling data and adjust data 【发布时间】:2021-02-25 06:54:15 【问题描述】:我正在尝试从 url (1st loop) 列表中抓取数据。在每个 url(第二个循环)中,我想通过添加更多数据来调整 product_reviews['reviews'] (列表)。这是我的代码:
import requests
import pandas as pd
df = pd.read_excel(r'C:\ids.xlsx')
ids = df['ids'].values.tolist()
link = 'https://www.real.de/product/%s/'
url_test = 'https://www.real.de/pdp-test/api/v1/%s/product-attributes/?offset=0&limit=500'
url_test1 = 'https://www.real.de/pdp-test/api/v1/%s/product-reviews/?offset=0&limit=500'
for i in ids:
product_id = requests.get(url_test %i).json()
product_reviews = requests.get(url_test1 %i).json()
for x in range(0,len(product_reviews['reviews']),1):
product_reviews['reviews'][x]['variantAttributes'].append(str(int(100*float(product_reviews['reviews'][x]['variantAttributes'][1]['label'].replace(" m","").replace(",",".")))))
product_reviews['reviews'][x]['variantAttributes'].append(str(int(100*float(product_reviews['reviews'][x]['variantAttributes'][0]['label'].replace(" m","").replace(",",".")))))
product_reviews['reviews'][x]['size']= str(int(100*float(product_reviews['reviews'][x]['variantAttributes'][1]['label'].replace(" m","").replace(",","."))))+ 'x' + str(int(100*float(product_reviews['reviews'][x]['variantAttributes'][0]['label'].replace(" m","").replace(",","."))))
product_reviews['reviews'][x]['url'] = link %i
product_reviews['reviews'][x]['ean'] = product_id['defaultAttributes'][0]['values'][0]['text']
product_reviews['reviews'][x]['TotalReviewperParent'] = product_reviews['totalReviews']
df = pd.DataFrame(product_reviews['reviews'])
df.to_excel( r'C:\new\str(i).xlsx', index=False)
但是,当我运行此代码时,它会返回错误:
第 24 行,在 product_reviews['reviews'][x]['variantAttributes'].append(str(int(100*float(product_reviews['reviews'][x]['variantAttributes'][1]['label'].replace( " m","").replace(",","."))))))
IndexError: 列表索引超出范围
当我为 1 个 url 运行第二个循环时,它运行良好,但是当我将第二个循环放入第一个循环时,它返回错误。它的解决方案是什么?我的代码看起来很猴子。你知道如何改进我的代码以使其更短吗?
【问题讨论】:
【参考方案1】:请在以后尝试创建Minimal, Reproducible Example。我们无权访问您的“ids.xlsx”,因此我们无法验证问题是出在您列表中的特定 ID 上还是一般问题。
获取一个随机 id,338661983
,并使用以下代码:
import requests
link = 'https://www.real.de/product/%s/'
url_attributes = 'https://www.real.de/pdp-test/api/v1/%s/product-attributes/?offset=0&limit=500'
url_reviews = 'https://www.real.de/pdp-test/api/v1/%s/product-reviews/?offset=0&limit=500'
ids = [338661983]
for i in ids:
product_id = requests.get(url_attributes % i).json()
product_reviews = requests.get(url_reviews % i).json()
for review in product_reviews['reviews']:
print(review)
break
我得到以下输出:
'reviewId': 1119427, 'title': 'Klasse!', 'date': '11.11.2020', 'rating': 5, 'isVerifiedPurchase': True, 'text': 'Originale Switch, schnelle Lieferung. Alles Top ', 'variantAttributes': [], 'author': 'hm-1511917085', 'datePublished': '2020-11-11T20:09:41+01:00'
请注意,variantAttributes
是一个空列表。
您收到 IndexError 是因为您尝试在该空列表的位置 1 获取元素:
review['variantAttributes'][1]['label'].replace(" m","").replace(",",".")
【讨论】:
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