diff --git a/Lib/plat-irix6/FL.py b/Lib/plat-irix6/FL.py
index f85237b..ae665e3 100644
--- a/Lib/plat-irix6/FL.py
+++ b/Lib/plat-irix6/FL.py
@@ -7,7 +7,7 @@
 _v21 = 1
 ##import fl
 ##try:
-##	_v20 = (fl.get_rgbmode <> None)
+##	_v20 = (fl.get_rgbmode is not None)
 ##except:
 ##	_v20 = 0
 ##del fl
diff --git a/Lib/plat-irix6/cdplayer.py b/Lib/plat-irix6/cdplayer.py
index eeb56ce..278da03 100644
--- a/Lib/plat-irix6/cdplayer.py
+++ b/Lib/plat-irix6/cdplayer.py
@@ -77,7 +77,7 @@
 			line = old.readline()
 			if line == '':
 				break
-			if line[:l] <> s:
+			if line[:l] != s:
 				new.write(line)
 		new.write(self.id + '.title:\t' + self.title + '\n')
 		new.write(self.id + '.artist:\t' + self.artist + '\n')
diff --git a/Lib/plat-irix6/flp.py b/Lib/plat-irix6/flp.py
index 6c6dae5..7d5814a 100644
--- a/Lib/plat-irix6/flp.py
+++ b/Lib/plat-irix6/flp.py
@@ -36,7 +36,7 @@
 #
 def parse_forms(filename):
     forms = checkcache(filename)
-    if forms != None: return forms
+    if forms is not None: return forms
     fp = _open_formfile(filename)
     nforms = _parse_fd_header(fp)
     forms = {}
@@ -168,7 +168,7 @@
     return _open_formfile2(filename)[0]
 
 def _open_formfile2(filename):
-    if filename[-3:] <> '.fd':
+    if filename[-3:] != '.fd':
         filename = filename + '.fd'
     if filename[0] == '/':
         try:
@@ -184,7 +184,7 @@
                 break
             except IOError:
                 fp = None
-    if fp == None:
+    if fp is None:
         raise error, 'Cannot find forms file ' + filename
     return fp, filename
 
@@ -194,7 +194,7 @@
 def _parse_fd_header(file):
     # First read the magic header line
     datum = _parse_1_line(file)
-    if datum <> ('Magic', 12321):
+    if datum != ('Magic', 12321):
         raise error, 'Not a forms definition file'
     # Now skip until we know number of forms
     while 1:
@@ -208,10 +208,10 @@
 #
 def _parse_fd_form(file, name):
     datum = _parse_1_line(file)
-    if datum <> FORMLINE:
+    if datum != FORMLINE:
         raise error, 'Missing === FORM === line'
     form = _parse_object(file)
-    if form.Name == name or name == None:
+    if form.Name == name or name is None:
         objs = []
         for j in range(form.Numberofobjects):
             obj = _parse_object(file)
@@ -316,7 +316,7 @@
             if datum == FORMLINE:
                 file.seek(pos)
             return obj
-        if type(datum) <> type(()) or len(datum) <> 2:
+        if type(datum) is not type(()) or len(datum) != 2:
             raise error, 'Parse error, illegal line in object: '+datum
         obj.add(datum[0], datum[1])
 
@@ -339,7 +339,7 @@
 #
 def merge_full_form(inst, form, (fdata, odatalist)):
     exec 'inst.'+fdata.Name+' = form\n'
-    if odatalist[0].Class <> FL.BOX:
+    if odatalist[0].Class != FL.BOX:
         raise error, 'merge_full_form() expects FL.BOX as first obj'
     for odata in odatalist[1:]:
         create_object_instance(inst, form, odata)
diff --git a/Lib/plat-irix6/jpeg.py b/Lib/plat-irix6/jpeg.py
index 1af6a01..2354f40 100644
--- a/Lib/plat-irix6/jpeg.py
+++ b/Lib/plat-irix6/jpeg.py
@@ -59,7 +59,7 @@
 	return imgdata, width, height, bytesperpixel
 
 def setoption(name, value):
-	if type(value) <> type(0):
+	if type(value) is not type(0):
 		raise TypeError, 'jpeg.setoption: numeric options only'
 	if name == 'forcegrey':
 		name = 'forcegray'
diff --git a/Lib/plat-irix6/panel.py b/Lib/plat-irix6/panel.py
index 629bee5..f8388c6 100644
--- a/Lib/plat-irix6/panel.py
+++ b/Lib/plat-irix6/panel.py
@@ -207,7 +207,7 @@
 	#
 	# Sanity check
 	#
-	if (not descr) or descr[0] <> 'panel':
+	if (not descr) or descr[0] != 'panel':
 		raise panel_error, 'panel description must start with "panel"'
 	#
 	if debug: show_panel('', descr)
diff --git a/Lib/plat-irix6/panelparser.py b/Lib/plat-irix6/panelparser.py
index 1b069fa..ee50971 100644
--- a/Lib/plat-irix6/panelparser.py
+++ b/Lib/plat-irix6/panelparser.py
@@ -71,7 +71,7 @@
 # May raise syntax_error.
 #
 def parse_expr(tokens):
-	if (not tokens) or tokens[0] <> '(':
+	if (not tokens) or tokens[0] != '(':
 		raise syntax_error, 'expected "("'
 	tokens = tokens[1:]
 	expr = []
diff --git a/Lib/plat-irix6/readcd.py b/Lib/plat-irix6/readcd.py
index 403353f..e000d35 100644
--- a/Lib/plat-irix6/readcd.py
+++ b/Lib/plat-irix6/readcd.py
@@ -93,7 +93,7 @@
 				if prog < self.status[5] or prog > self.status[6]:
 					raise Error, 'range error'
 				end = self.pmsf2msf(prog, min, sec, frame)
-			elif l <> 3:
+			elif l != 3:
 				raise Error, 'syntax error'
 		if type(start) == type(0):
 			if start < self.status[5] or start > self.status[6]:
@@ -111,7 +111,7 @@
 				if prog < self.status[5] or prog > self.status[6]:
 					raise Error, 'range error'
 				start = self.pmsf2msf(prog, min, sec, frame)
-			elif l <> 3:
+			elif l != 3:
 				raise Error, 'syntax error'
 		self.list.append((start, end))
 
@@ -127,10 +127,10 @@
 		if self.playing:
 			start, end = self.list[self.listindex]
 			if type(end) == type(0):
-				if cb_type <> CD.PNUM:
+				if cb_type != CD.PNUM:
 					self.parser.setcallback(cb_type, func, arg)
 			else:
-				if cb_type <> CD.ATIME:
+				if cb_type != CD.ATIME:
 					self.parser.setcallback(cb_type, func, arg)
 
 	def removecallback(self, cb_type):
@@ -140,10 +140,10 @@
 		if self.playing:
 			start, end = self.list[self.listindex]
 			if type(end) == type(0):
-				if cb_type <> CD.PNUM:
+				if cb_type != CD.PNUM:
 					self.parser.removecallback(cb_type)
 			else:
-				if cb_type <> CD.ATIME:
+				if cb_type != CD.ATIME:
 					self.parser.removecallback(cb_type)
 
 	def gettrackinfo(self, *arg):
diff --git a/Lib/plat-irix6/torgb.py b/Lib/plat-irix6/torgb.py
index 59e3fbe..7cc3b47 100644
--- a/Lib/plat-irix6/torgb.py
+++ b/Lib/plat-irix6/torgb.py
@@ -60,7 +60,7 @@
 		ret = _torgb(filename, temps)
 	finally:
 		for temp in temps[:]:
-			if temp <> ret:
+			if temp != ret:
 				try:
 					os.unlink(temp)
 				except os.error:
@@ -83,12 +83,12 @@
 		if type(msg) == type(()) and len(msg) == 2 and \
 			type(msg[0]) == type(0) and type(msg[1]) == type(''):
 			msg = msg[1]
-		if type(msg) <> type(''):
+		if type(msg) is not type(''):
 			msg = `msg`
 		raise error, filename + ': ' + msg
 	if ftype == 'rgb':
 		return fname
-	if ftype == None or not table.has_key(ftype):
+	if ftype is None or not table.has_key(ftype):
 		raise error, \
 			filename + ': unsupported image file type ' + `ftype`
 	temp = tempfile.mktemp()