[issue8978] "tarfile.ReadError: file could not be opened successfully" if compiled without zlib

[Florent Xicluna]

Florent Xicluna <florent.xicluna at gmail.com> added the comment:

something like :
  raise CompressionError("zlib module is not available")

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8978>
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