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我试图通过将响应解析为announce 请求来从我的跟踪器中获取种子的对等列表。这是我已经走了多远：

import sys,binascii,urllib.parse,urllib.request
from bcode import bdecode

def announce(inputurl):
    with urllib.request.urlopen(inputurl) as url:
        print(url.read())
        decoded = bdecode(url.read())
        print(decoded)

infohash = sys.argv[1] # Read info hash from command line

encoded_infohash = urllib.parse.quote(binascii.a2b_hex(infohash)) # Encode inf_hash
announce_url = "http://my_tracker_ip:6969/announce?info_hash=" + encoded_infohash
announce(announce_url)

当我为示例种子的 info_hash 运行它时，这会产生以下错误：

b'd8:completei1e10:downloadedi2e10:incompletei3e8:intervali1698e12:min intervali849e5:peers24:\x89?GZ\xc4\x0f\xb8K\xd5r\xc4\x0f\xc0\xa8\x00\t\x00\x00\xc0\xa8\x00\x01\xe8\x8ce'
Traceback (most recent call last):
  File "announce.py", line 15, in <module>
    announce(announce_url)
  File "announce.py", line 7, in announce
    decoded = bdecode(url.read())
  File "/usr/lib/python3.4/site-packages/bcode.py", line 55, in bdecode
    if input[0] == 'i':
IndexError: index out of range

我不确定我哪里出错了。我正在使用 Python 3.4.3

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