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TypeError: 'NoneType' object is not iterable在被拋出之前，我一直在通過運行這段代碼獲得部分收益。但是，在拋出錯誤之前，我通過許多行寫入我的 csv 檔案。我相信這是由于迭代時不存在其中一個欄位名。有誰知道我可以添加什么來跳過這些欄位并繼續下一個專案？
with open("urls.txt",'r') as urllist, open('data.csv','w') as outfile:
writer = csv.DictWriter(outfile, fieldnames=["product_name","product_image","product_desc","product_company","product_country","product_type","product_abv","product_taste"],quoting=csv.QUOTE_ALL)
writer.writeheader()
for url in urllist.read().splitlines():
data = scrape(url)
if data:
for r in data['product']:
writer.writerow(r)
uj5u.com熱心網友回復：
也許嘗試默認產品密鑰？
if data:
for r in data.get('product', []):
# action
uj5u.com熱心網友回復：
嘗試這個：
with open("urls.txt",'r') as urllist, open('data.csv','w') as outfile:
writer = csv.DictWriter(outfile, fieldnames=["product_name","product_image","product_desc","product_company","product_country","product_type","product_abv","product_taste"],quoting=csv.QUOTE_ALL)
writer.writeheader()
for url in urllist.read().splitlines():
if not url:
continue
data = scrape(url)
if data and data['product']:
for r in data['product']:
writer.writerow(r)
uj5u.com熱心網友回復：
with open('urls.txt', 'r') as urllist:
for line in urls.txt:
if len(line) < 1:
pass
或者也許代替len(line)
if line == '':
pass
這對你有用嗎？當我第一次了解到您不一定要在打開的檔案上呼叫讀取函式時，我感到有點無知。除非我把它與 HTML 決議混淆......和 ??BeautifulSoup。
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