A patch to fix issue #4 with pyxid (https://github.com/cedrus-opensource/pyxid/issues/4).

internal.py.patch

--- pyxid/pyxid/internal.py.orig        2013-04-10 11:17:28.540172465 -0400
+++ pyxid/pyxid/internal.py     2013-06-06 11:18:56.113084268 -0400
@@ -126,7 +126,7 @@
 
 
     def check_for_keypress(self):
-        response = self.read(6)
+        response = self.read(self.__bytes_in_buffer % 6 if (self.__bytes_in_buffer % 6) else 6)
 
         response_found = NO_KEY_DETECTED
         if len(response) > 0:
@@ -138,9 +138,10 @@
 
     def xid_input_found(self):
         input_found = NO_KEY_DETECTED
+        input_error = False
 
         if self.__bytes_in_buffer >= 6:
-            last_byte_index = self.__bytes_in_buffer - self.__xid_packet_size
+            last_byte_index = (self.__bytes_in_buffer // 6) * 6 - self.__xid_packet_size
 
             i = 0
             while i <= last_byte_index:
@@ -150,6 +151,7 @@
                                                    last_byte_index:
                                                    last_byte_index+6])
                 except Exception:
+                    input_error = True
                     i += 1
                     continue
 
@@ -178,6 +180,10 @@
 
                 i += 1
 
+        if input_error:
+            self.__response_buffer = ''
+            self.__bytes_in_buffer = 0
+
         return input_found