python - 运行时错误 : maximum recursion depth exceeded when parsing HTML

Question

我有一个测试程序，我试图从每个 HTML 标记中提取所有文本。在我重写 __init__ 函数之前，它似乎一直有效。

我得到错误:

 File "./html.py", line 9, in __init__
    TransParser.__init__(self)
  File "./html.py", line 9, in __init__
    TransParser.__init__(self)
  File "./html.py", line 9, in __init__
    TransParser.__init__(self)
  File "./html.py", line 9, in __init__
    TransParser.__init__(self)
RuntimeError: maximum recursion depth exceeded

程序在这里:

from HTMLParser import HTMLParser

trans = {
'History': 'History TRANSLATED',
'Acknowledgements': 'Acknowledgements TRANSLATED'
}

inputHTML = """<table border="0" cellspacing="0" cellpadding="0">
    <tbody>
      <tr>
        <td class="section-title"><a href="/about%20/history">History</a>        </td>

        <td class="section-title"><a href="/about/team">Project Team</a></td>

        <td class="section-title"><a href="/about/data">Contributors of data</a></td>

        <td class="section-title"><a href=
        "/about/acknowledgements">Acknowledgements</a></td>

        <td class="section-title"><a href="/about/origins">African Origins
        Project</a></td>

        <td class="section-title"><a href="/about/contacts">Contact us</a></td>
      </tr>
    </tbody>
  </table>

  <table border="0" cellspacing="0" cellpadding="0">
    <tbody>
      <tr>
        <td class="section-desc">A brief account of the origins of a single multi-source
        dataset of the trans-Atlantic slave trade and its realization first as a CD-ROM
        published by Cambridge University Press in 1999 and now, in an expanded version,
        on the Voyages website.</td>

        <td class="section-desc">Names of the principal investigators, of members of the
        project development team, and of individuals serving on the steering committee
        and advisory board.</td>

        <td class="section-desc">Names of scholars and researchers whose findings on the
       trans-Atlantic slave trade have been incorporated into the Voyages Database.</td>

        <td class="section-desc">Major sponsors and institutional partners of the Voyages
        website, as well as other organizations and individuals who have assisted the
        work of the project team.</td>

        <td class="section-desc">A scholar-public collaborative project using audio
        recordings of names in African Names Database to trace the geographic origins of
         Africans transported in the transatlantic slave trade.</td>

        <td class="section-desc">Members of the Voyages editorial board and the email
         address for contacting the website.</td>
      </tr>
     </tbody>
  </table>"""


class TransParser(HTMLParser):
    def __init__(self):
        TransParser.__init__(self)
        self.trans_data = self.rawdata

    def handle_data(self, data):
         data = data.strip()
        if data:
            section = trans.get(data, data)
            #self.trans_data = self.trans_data.replace(data, section)

parser = TransParser()
parser.feed(inputHTML)

Answer 1

class TransParser(HTMLParser):
    def __init__(self):
        TransParser.__init__(self)
        #         ^^^ You are calling the same constructor recursively.

修复:

class TransParser(HTMLParser):
    def __init__(self):
        HTMLParser.__init__(self)
        ..
        ..