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我正在尝试使用PyZ3950django 应用程序连接到数据库以检索数据。这个模块很旧，它一直适用于 Python 2，但我找不到适用于 Python 3 的工作版本。

https://github.com/danizen/PyZ3950 github 上的 repo 设法移植应用程序使用2to3.py和一些手动更改，但是虽然这个库安装得很好，PyZ3950.asn1.EncodingError: Bad type to bytes_write但当我尝试Connection从zoom.

这是完整的追溯：

Python 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:21:23) [MSC v.1916 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.        
>>> from PyZ3950 import zoom
>>> conn = zoom.Connection ('z3950.loc.gov', 7090)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\zoom.py", line 276, in __init__
    self.connect()
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\zoom.py", line 301, in connect
    self._cli = z3950.Client (self.host, self.port,
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\z3950.py", line 510, in __init__
    self.initresp = self.transact (
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\z3950.py", line 529, in transact
    b = self.encode_ctx.encode (APDU, to_send)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 622, in encode
    spec.encode (self, data)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 1192, in encode
    ctyp.encode (ctx, val)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 858, in encode
    self.typ.encode (ctx, val)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 796, in encode
    self.encode_val (ctx, val)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 1504, in encode_val
    typ.encode (ctx, v)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 858, in encode
    self.typ.encode (ctx, val)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 796, in encode
    self.encode_val (ctx, val)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 1089, in encode_val
    ctx.bytes_write (val)
  File "D:\Downloads\Applications\PyZ3950-danizen\PyZ3950-master\PyZ3950\asn1.py", line 633, in bytes_write
    raise EncodingError("Bad type to bytes_write")
PyZ3950.asn1.EncodingError: Bad type to bytes_write
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1 回答 1

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虽然我不能具体回答你的问题，但我已经尝试更新 PyZ3959 代码，从 Dan Davis 的工作开始：https ://github.com/danizen/PyZ3950 。

我没有尝试让代码与 Python 2 和 3 兼容，而是专注于让它与 Python 3.7 一起工作。代码可以在这里找到：https ://github.com/heaphey/PyZ3950

我没有以系统的方式对其进行测试（正如我相信 Dan 所做的那样），但它运行良好，可以从 OCLC 等获取 MARC 记录。

于 2021-09-20T04:30:03.083 回答