[英]Error parsing unicode with HTMLParser
這是我為Python 3.3運行的代碼:
from html.parser import HTMLParser
class TableParser(HTMLParser):
def __init__(self):
HTMLParser.__init__(self)
self.in_table = False
self.in_table_header = False
self.in_table_header_field = False
self.table_fields = []
def handle_starttag(self, tag, attributes):
if tag == 'table':
for name, value in attributes:
if name == 'id' and value == 'data_table':
self.in_table = True
if self.in_table == True:
if tag == 'thead':
self.in_table_header = True
if self.in_table_header == True and tag == 'th':
self.in_table_header_field = True
def handle_endtag(self, tag):
if tag == 'table':
self.in_table = False
if tag == 'thead':
self.in_table_header = False
if tag == 'th':
self.in_table_header_field = False
def handle_data(self, data):
if self.in_table_header_field == True:
self.table_fields.append(data)
parser = TableParser()
parser.feed('<table id="data_table"><thead><tr><th>Company</th><th>Rapport</th><th>Price</th><th>Development 1år</th></thead></table>')
print(parser.table_fields)
這是輸出:
['Company', 'Rapport', 'Price', 'Development 1', 'r']
我期待着:
['Company', 'Rapport', 'Price', 'Development 1år']
還是更好:
['Company', 'Rapport', 'Price', 'Development 1år']
我究竟做錯了什么?
您還需要為HTMLParser.handle_charref()
方法添加一個處理程序:
def handle_charref(self, name):
self.handle_data(self.unescape('&#{};'.format(name)))
使用lxml :
>>> import lxml.html
>>> root = lxml.html.fromstring('<table id="data_table"><thead><tr><th>Company</th><th>Rapport</th><th>Price</th><th>Development 1år</th></thead></table>')
>>> root.xpath('.//thead//th/text()')
['Company', 'Rapport', 'Price', 'Development 1år']
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