【Python】处理UnicodeDecodeError: ‘gbk’ codec can’t decode byte 0xa2 in position…
編碼格式問題
Traceback (most recent call last):
??File “D:/PyCharm/text_processing/解析并清洗HTML.py”, line 6, in <module>
????lines = f.readlines()
UnicodeDecodeError: ‘gbk’ codec can’t decode byte 0xa2 in position 216: illegal multibyte sequence
遇到此情況，就是編碼格式的問題了，我們應該設置編碼格式為UTF-8：
with open(‘test.html’, ‘r’, encoding=‘UTF-8’) as f:
bs4.FeatureNotFound
Traceback (most recent call last):
??File “D:/PyCharm/text_processing/解析并清洗HTML.py”, line 11, in <module>
soup = BeautifulSoup(string, “lxml”)
??File “D:\PyCharm\text_processing\venv\lib\site-packages\bs4\__init__.py”, line 228, in __init__
????% “,”.join(features))
bs4.FeatureNotFound: Couldn’t find a tree builder with the features you requested: lxml. Do you need to install a parser library?
這個問題的產生原因是缺少lxml庫，可以pip一下：pip3 install lxml
測試代碼
from bs4 importstring = ""with open('test.html', 'r', encoding='UTF-8') as f:lines = f.readlines()for i in lines:string = '%s %s' % (string, i)# 解析HTML soup = BeautifulSoup(string, "lxml")# 查找id為"b_id"的div標簽，并查看文本 print(soup.find("div", {"id": "b_id"}).text) <!DOCTYPE html> <html lang="ch"> <head><meta charset="UTF-8"><title>測試頁面</title> </head> <body><div id="a_id"><div id="b_id"><div id="c_id">大碗寬面，真香！</div></div></div> </body> </html> 大碗寬面，真香！ <!DOCTYPE html> <html lang="ch"> <head><meta charset="UTF-8"><title>測試頁面</title> </head> <body><div id="a_id"><div id="b_id"><div id="c_id">大碗寬面，真香！</div></div></div> </body> </html> 大碗寬面，真香！ <!DOCTYPE html> <html lang="ch"> <head><meta charset="UTF-8"><title>測試頁面</title> </head> <body><div id="a_id"><div id="b_id"><div id="c_id">大碗寬面，真香！</div></div></div> </body> </html> 大碗寬面，真香！可見這東西與文檔格式有關，它會關注到空白字符，和瀏覽器解析顯示不同。
總結
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