Update for Python3

pty-gpib-emulator/python/PTY_Interface.py

@@ -58,7 +58,7 @@ class Interface:
         while (self.running):
             tty_in = os.read(self.m, readLen)
             for tty_out in self.handleInput(tty_in):
-                os.write(self.m, tty_out)
+                os.write(self.m, tty_out.encode())
 
 
 ##%% handleInput(tty_in)
@@ -67,7 +67,7 @@ class Interface:
 ## address. That device must handle the command via dev.handleCMD(cmd, args)
 ##
     def handleInput(self, tty_in):
-        tty_in = tty_in.strip()
+        tty_in = tty_in.strip().decode()
 
         if tty_in != "" and self.addr in self.devices:
             dev = self.devices[self.addr]
@@ -83,5 +83,5 @@ class Interface:
 ##
     def addDevice(self, dev, addr):
         self.devices[addr] = dev
-        
+
 

pty-gpib-emulator/python/enumerate_interfaces.py

@@ -0,0 +1,36 @@
+# Use those functions to enumerate all interfaces available on the system using Python.
+# found on <http://code.activestate.com/recipes/439093/#c1>
+
+import socket
+import fcntl
+import struct
+import array
+
+def all_interfaces():
+    max_possible = 128  # arbitrary. raise if needed.
+    bytes = max_possible * 32
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    names = array.array('B', '\0' * bytes)
+    outbytes = struct.unpack('iL', fcntl.ioctl(
+        s.fileno(),
+        0x8912,  # SIOCGIFCONF
+        struct.pack('iL', bytes, names.buffer_info()[0])
+    ))[0]
+    namestr = names.tostring()
+    lst = []
+    for i in range(0, outbytes, 40):
+        name = namestr[i:i+16].split('\0', 1)[0]
+        ip   = namestr[i+20:i+24]
+        lst.append((name, ip))
+    return lst
+
+def format_ip(addr):
+    return str(ord(addr[0])) + '.' + \
+           str(ord(addr[1])) + '.' + \
+           str(ord(addr[2])) + '.' + \
+           str(ord(addr[3]))
+
+
+ifs = all_interfaces()
+for i in ifs:
+    print "%12s   %s" % (i[0], format_ip(i[1]))