Revision d624f458 gnuradio-core/src/python/gnuradio/gr/qa_hier_block2.py

b/gnuradio-core/src/python/gnuradio/gr/qa_hier_block2.py
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                             gr.io_signature(1, 1, gr.sizeof_char),
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                             gr.io_signature(0, 0, 0))
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        dst = gr.vector_sink_b()
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        tb.connect(gr.vector_source_b([1,]), hb1)
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        tb.connect(src, hb1)
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        hb1.connect(hb1, hb2)
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        hb2.connect(hb2, gr.kludge_copy(gr.sizeof_char), dst)
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        tb.run()

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