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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _blockread(self, fname):
 """ Generator yields bsize lines from gdf file. Hidden method. Parameters fname : str Name of gdf-file. Yields ------ list file contents """

        with open(fname, 'rb') as f:
            while True:
                a = []
                for i in range(self.bsize):
                    line = f.readline()
                    if not line: break
                    a.append(line.split())
                if a == []: raise StopIteration
                yield a