Small changes to adapt to Python 3 on GNURadio 3.8

apps/am_flow_example.py

@@ -14,7 +14,7 @@
             x11 = ctypes.cdll.LoadLibrary('libX11.so')
             x11.XInitThreads()
         except:
-            print "Warning: failed to XInitThreads()"
+            print("Warning: failed to XInitThreads()")
 
 from PyQt4 import Qt
 from gnuradio import analog

apps/cursesgui.py

@@ -89,7 +89,7 @@ def draw_spectrum(self, data):
          # Clear previous contents, draw border, and title
         self.win.clear()
         self.win.border(0)
-        self.win.addnstr(0, self.dims[1]/2-4, "SPECTRUM", 8,
+        self.win.addnstr(0, int(self.dims[1]/2-4), "SPECTRUM", 8,
                          curses.color_pair(4))
 
         # Draw the bars
@@ -191,7 +191,7 @@ def draw_channels(self, gui_tuned_channels):
         # Clear previous contents, draw border, and title
         self.win.clear()
         self.win.border(0)
-        self.win.addnstr(0, self.dims[1]/2-4, "CHANNELS", 8,
+        self.win.addnstr(0, int(self.dims[1]/2-4), "CHANNELS", 8,
                          curses.color_pair(4))
 
         # Limit the displayed channels to no more than two rows
@@ -247,7 +247,7 @@ def draw_channels(self, gui_lockout_channels):
         # Clear previous contents, draw border, and title
         self.win.clear()
         self.win.border(0)
-        self.win.addnstr(0, self.dims[1]/2-3, "LOCKOUT", 7,
+        self.win.addnstr(0, int(self.dims[1]/2-3), "LOCKOUT", 7,
                          curses.color_pair(4))
 
         # Draw the lockout channels
@@ -354,7 +354,7 @@ def draw_rx(self):
         # Clear previous contents, draw border, and title
         self.win.clear()
         self.win.border(0)
-        self.win.addnstr(0, self.dims[1]/2-4, "RECEIVER", 8,
+        self.win.addnstr(0, int(self.dims[1]/2-4), "RECEIVER", 8,
                          curses.color_pair(4))
 
         # Draw the receiver info prefix fields
@@ -380,7 +380,7 @@ def draw_rx(self):
         self.win.addnstr(10, 1, text, 15)
 
         # Draw the receiver info suffix fields
-        if self.freq_entry <> 'None':
+        if self.freq_entry != 'None':
             text = self.freq_entry
         else:
             text = '{:.3f}'.format((self.center_freq)/1E6)
@@ -471,7 +471,7 @@ def proc_keyb_hard(self, keyb):
                 pass
             self.freq_entry = 'None'
             return True
-        elif self.freq_entry <> 'None' and (keyb - 48 in range (10) or keyb == ord('.')):
+        elif self.freq_entry != 'None' and (keyb - 48 in range (10) or keyb == ord('.')):
             # build up frequency from 1-9 and '.'
             self.freq_entry = self.freq_entry + chr(keyb)
             return False

apps/estimate.py

@@ -68,30 +68,30 @@ def main():
     """ Tests the functions in this module"""
 
     # Test avg_freq()
-    print "Testing avg_freq()"
+    print("Testing avg_freq()")
     data = np.array([0, 1, 1, 0])
-    print "Input spectrum data is " + str(data)
+    print("Input spectrum data is " + str(data))
     result = avg_freq(data)
-    print "Average frequency is " + str(result)
+    print("Average frequency is " + str(result))
     if result == 1.5:
-        print "Test Pass"
+        print("Test Pass")
     else:
-        print "Test Fail"
-    print ""
+        print("Test Fail")
+    print("")
 
     # Test channel_estimate()
-    print "Testing channel_estimate()"
+    print("Testing channel_estimate()")
     data = np.array([0, 1, 1, 0, 0, 1, 1, 1])
     threshold = 0.5
-    print "Input spectrum data is " + str(data)
-    print "Threshold is " + str(threshold)
+    print("Input spectrum data is " + str(data))
+    print("Threshold is " + str(threshold))
     result = channel_estimate(data, threshold)
-    print "Channels at " + str(result)
+    print("Channels at " + str(result))
     if result == [1.5, 6.0]:
-        print "Test Pass"
+        print("Test Pass")
     else:
-        print "Test Fail"
-    print ""
+        print("Test Fail")
+    print("")
 
 
 if __name__ == '__main__':

apps/ham2mon.py

@@ -142,13 +142,13 @@ def main(screen):
         PARSER = parser.CLParser()
         if len(PARSER.parser_args) != 0:
             PARSER.print_help() #pylint: disable=maybe-no-member
-            raise SystemExit, 1
+            raise(SystemExit, 1)
         else:
             curses.wrapper(main)
     except KeyboardInterrupt:
         pass
     except RuntimeError:
-        print ""
-        print "RuntimeError: SDR hardware not detected or insufficient USB permissions. Try running as root."
-        print ""
+        print("")
+        print("RuntimeError: SDR hardware not detected or insufficient USB permissions. Try running as root.")
+        print("")
 

apps/nbfm_flow_example.py

@@ -14,7 +14,7 @@
             x11 = ctypes.cdll.LoadLibrary('libX11.so')
             x11.XInitThreads()
         except:
-            print "Warning: failed to XInitThreads()"
+            print("Warning: failed to XInitThreads()")
 
 from PyQt4 import Qt
 from gnuradio import analog

apps/parser.py

@@ -132,24 +132,24 @@ def main():
 
     if len(parser.parser_args) != 0:
         parser.print_help() #pylint: disable=maybe-no-member
-        raise SystemExit, 1
-
-    print "hw_args:             " + parser.hw_args
-    print "num_demod:           " + str(parser.num_demod)
-    print "type_demod:          " + str(parser.type_demod)
-    print "center_freq:         " + str(parser.center_freq)
-    print "ask_samp_rate:       " + str(parser.ask_samp_rate)
-    print "gain_db:             " + str(parser.gain_db)
-    print "if_gain_db:          " + str(parser.if_gain_db)
-    print "bb_gain_db:          " + str(parser.bb_gain_db)
-    print "squelch_db:          " + str(parser.squelch_db)
-    print "volume_db:           " + str(parser.volume_db)
-    print "threshold_db:        " + str(parser.threshold_db)
-    print "record:              " + str(parser.record)
-    print "lockout_file_name:   " + str(parser.lockout_file_name)
-    print "priority_file_name:  " + str(parser.priority_file_name)
-    print "freq_correction:     " + str(parser.freq_correction)
-    print "audio_bps:           " + str(parser.audio_bps)
+        raise(SystemExit, 1)
+
+    print("hw_args:             " + parser.hw_args)
+    print("num_demod:           " + str(parser.num_demod))
+    print("type_demod:          " + str(parser.type_demod))
+    print("center_freq:         " + str(parser.center_freq))
+    print("ask_samp_rate:       " + str(parser.ask_samp_rate))
+    print("gain_db:             " + str(parser.gain_db))
+    print("if_gain_db:          " + str(parser.if_gain_db))
+    print("bb_gain_db:          " + str(parser.bb_gain_db))
+    print("squelch_db:          " + str(parser.squelch_db))
+    print("volume_db:           " + str(parser.volume_db))
+    print("threshold_db:        " + str(parser.threshold_db))
+    print("record:              " + str(parser.record))
+    print("lockout_file_name:   " + str(parser.lockout_file_name))
+    print("priority_file_name:  " + str(parser.priority_file_name))
+    print("freq_correction:     " + str(parser.freq_correction))
+    print("audio_bps:           " + str(parser.audio_bps))
 
 
 if __name__ == '__main__':

apps/receiver.py

@@ -601,14 +601,14 @@ def main():
     center_freq = 144.5E6
     receiver.set_center_freq(center_freq)
     receiver.set_gain(10)
-    print "\n"
-    print "Started %s at %.3f Msps" % (hw_args, receiver.samp_rate/1E6)
-    print "RX at %.3f MHz with %d dB gain" % (receiver.center_freq/1E6,
-                                              receiver.gain_db)
+    print("\n")
+    print("Started %s at %.3f Msps" % (hw_args, receiver.samp_rate/1E6))
+    print("RX at %.3f MHz with %d dB gain" % (receiver.center_freq/1E6,
+                                              receiver.gain_db))
     receiver.set_squelch(-60)
     receiver.set_volume(0)
-    print "%d demods of type %d at %d dB squelch and %d dB volume" % \
-        (num_demod, type_demod, receiver.squelch_db, receiver.volume_db)
+    print("%d demods of type %d at %d dB squelch and %d dB volume" % \
+        (num_demod, type_demod, receiver.squelch_db, receiver.volume_db))
 
     # Create some baseband channels to tune based on 144 MHz center
     channels = np.zeros(num_demod)
@@ -622,9 +622,9 @@ def main():
 
     # Print demodulator info
     for idx, channel in enumerate(channels):
-        print "Tuned demod %d to %.3f MHz" % (idx,
+        print("Tuned demod %d to %.3f MHz" % (idx,
                                               (channel+receiver.center_freq)
-                                              /1E6)
+                                              /1E6))
 
     while 1:
         # No need to go faster than 10 Hz rate of GNU Radio probe
@@ -633,7 +633,7 @@ def main():
 
         # Grab the FFT data and print max value
         spectrum = receiver.probe_signal_vf.level()
-        print "Max spectrum of %.3f" % (np.max(spectrum))
+        print("Max spectrum of %.3f" % (np.max(spectrum)))
 
     # Stop the receiver
     receiver.stop()

apps/scanner.py

@@ -5,7 +5,10 @@
 
 @author: madengr
 """
-import __builtin__
+try:
+    import builtins
+except:
+    import __builtin__
 import receiver as recvr
 import estimate
 import parser as prsr
@@ -348,7 +351,7 @@ def main():
 
     if len(parser.parser_args) != 0:
         parser.print_help() #pylint: disable=maybe-no-member
-        raise SystemExit, 1
+        raise(SystemExit, 1)
 
     # Create scanner object
     ask_samp_rate = parser.ask_samp_rate
@@ -369,14 +372,14 @@ def main():
     scanner.set_gain(parser.gain_db)
     scanner.set_if_gain(parser.if_gain_db)
     scanner.set_bb_gain(parser.bb_gain_db)
-    print "\n"
-    print "Started %s at %.3f Msps" % (hw_args, scanner.samp_rate/1E6)
-    print "RX at %.3f MHz with %d dB gain" % (scanner.center_freq/1E6,
-                                              scanner.gain_db)
+    print("\n")
+    print("Started %s at %.3f Msps" % (hw_args, scanner.samp_rate/1E6))
+    print("RX at %.3f MHz with %d dB gain" % (scanner.center_freq/1E6,
+                                              scanner.gain_db))
     scanner.set_squelch(parser.squelch_db)
     scanner.set_volume(parser.volume_db)
-    print "%d demods of type %d at %d dB squelch and %d dB volume" % \
-        (num_demod, type_demod, scanner.squelch_db, scanner.volume_db)
+    print("%d demods of type %d at %d dB squelch and %d dB volume" % \
+        (num_demod, type_demod, scanner.squelch_db, scanner.volume_db))
 
     # Create this epmty list to allow printing to screen
     old_gui_tuned_channels = []