HTMLParser 有默认参数convert_charrefs，需要手工设成False，否则样例代码的 handle_entityref 方法不会起作用：
HTMLParser
convert_charrefs
False
handle_entityref
If convert_charrefs is True (the default), all character references (except the ones in script/style elements) are automatically converted to the corresponding Unicode characters. 摘自 Python 官方文档
If convert_charrefs is True (the default), all character references (except the ones in script/style elements) are automatically converted to the corresponding Unicode characters.
True
script
style
摘自 Python 官方文档
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遥望君山
HTMLParser有默认参数convert_charrefs，需要手工设成False，否则样例代码的handle_entityref方法不会起作用：