On Thu, Sep 30, 2010 at 4:34 PM, 王铖 <[email protected]> wrote:
> Hi, everyone, > > When I ran a python program, I met such a question, can you holp me to > point out where the problem is? > > The problem is as follows: > > Traceback (most recent call last): > File "MainFrame.py", line 106, in OnDBPSK_Demodulate > objDemod = DBPSKDemod.dbpsk_demod(fg) > File "/home/cwang/prj/ufl/source_code/Receiver/DBPSKDemod.py", line 153, > in __init__ > gr.hier_block2.__init__(self, self._fg, self.pre_scaler, self.unpack) > #changed from block to block2, cwang 9.29 > File "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/hier_block2.py", > line 42, in __init__ > self._hb = hier_block2_swig(name, input_signature, output_signature) > File > "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/gnuradio_swig_py_runtime.py", > line 1015, in hier_block2_swig > return _gnuradio_swig_py_runtime.hier_block2_swig(*args, **kwargs) > TypeError: in method 'hier_block2_swig', argument 1 of type 'std::string > const' > > > Thanks. > > Cheng > > From: self._hb = hier_block2_swig(name, input_signature, output_signature), you're supposed to pass an argument "name" to the hier_block2 constructor, so the error is telling you that you're using the wrong type (i.e., not a string like it's expecting). From: gr.hier_block2.__init__(self, self._fg, self.pre_scaler, self.unpack), you're passing a flow graph as the argument instead of a name. The comment suggests you just changed "block" to "block2", but there were more changes than just the cosmetic name change, so you'll need to look into how to use the hier_block2. Tom
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