Update the code to better reflect recommended style:

Use != instead of <> since <> is documented as "obsolescent".
Use "is" and "is not" when comparing with None or type objects.

Lib/lib-old/Para.py

@@ -28,7 +28,7 @@ class Para:
 	# Each word should be a 7-tuple:
 	# (font, text, width, space, stretch, ascent, descent)
 	def addword(self, d, font, text, space, stretch):
-		if font <> None:
+		if font is not None:
 			d.setfont(font)
 		width = d.textwidth(text)
 		ascent = d.baseline()
@@ -50,7 +50,7 @@ class Para:
 	def getlength(self):
 		total = 0
 		for word in self.words:
-			if type(word) <> Int:
+			if type(word) is not Int:
 				total = total + word[2] + word[3]
 		return total
 	#
@@ -63,7 +63,7 @@ class Para:
 		as, de = 1, 0
 		for i in range(len(self.words)):
 			word = self.words[i]
-			if type(word) == Int: continue
+			if type(word) is Int: continue
 			(fo, te, wi, sp, st, as, de) = word
 			self.words[i] = (fo, te, wi, sp, 0, as, de)
 			total = total + wi + sp
@@ -99,7 +99,7 @@ class Para:
 			j = i
 			while i < n:
 				word = words[i]
-				if type(word) == Int:
+				if type(word) is Int:
 					if word > 0 and width >= avail:
 						break
 					i = i+1
@@ -107,7 +107,7 @@ class Para:
 				fo, te, wi, sp, st, as, de = word
 				if width + wi > avail and width > 0 and wi > 0:
 					break
-				if fo <> None:
+				if fo is not None:
 					lastfont = fo
 					if width == 0:
 						firstfont = fo
@@ -119,7 +119,7 @@ class Para:
 				ascent = max(ascent, as)
 				descent = max(descent, de)
 				i = i+1
-			while i > j and type(words[i-1]) == Int and \
+			while i > j and type(words[i-1]) is Int and \
 				words[i-1] > 0: i = i-1
 			width = width - lsp
 			if i < n:
@@ -152,10 +152,10 @@ class Para:
 			v2 = v + ascent + descent
 			for j in range(i, i+wordcount):
 				word = self.words[j]
-				if type(word) == Int:
+				if type(word) is Int:
 					ok = anchorfunc(self, tuple, word, \
 							h, v)
-					if ok <> None: return ok
+					if ok is not None: return ok
 					continue
 				fo, te, wi, sp, st, as, de = word
 				if extra > 0 and stretch > 0:
@@ -167,7 +167,7 @@ class Para:
 				h2 = h + wi + sp + ex
 				ok = wordfunc(self, tuple, word, h, v, \
 					h2, v2, (j==i), (j==i+wordcount-1))
-				if ok <> None: return ok
+				if ok is not None: return ok
 				h = h2
 			v = v2
 			i = i + wordcount
@@ -177,7 +177,7 @@ class Para:
 	# given by (left, top, right) with an unspecified bottom.
 	# Return the computed bottom of the text.
 	def render(self, d, left, top, right):
-		if self.width <> right-left:
+		if self.width != right-left:
 			self.layout(right-left)
 		self.left = left
 		self.top = top
@@ -193,7 +193,7 @@ class Para:
 		return self.bottom
 	#
 	def _renderword(self, tuple, word, h, v, h2, v2, isfirst, islast):
-		if word[0] <> None: self.d.setfont(word[0])
+		if word[0] is not None: self.d.setfont(word[0])
 		baseline = v + tuple[5]
 		self.d.text((h, baseline - word[5]), word[1])
 		if self.anchorid > 0:
@@ -229,7 +229,7 @@ class Para:
 	def extract(self):
 		text = ''
 		for w in self.words:
-			if type(w) <> Int:
+			if type(w) is not Int:
 				word = w[1]
 				if w[3]: word = word + ' '
 				text = text + word
@@ -254,14 +254,14 @@ class Para:
 	#
 	def _whereisword(self, tuple, word, h1, v1, h2, v2, isfirst, islast):
 		fo, te, wi, sp, st, as, de = word
-		if fo <> None: self.lastfont = fo
+		if fo is not None: self.lastfont = fo
 		h = h1
 		if isfirst: h1 = 0
 		if islast: h2 = 999999
 		if not (v1 <= self.mousev <= v2 and h1 <= self.mouseh <= h2):
 			self.charcount = self.charcount + len(te) + (sp > 0)
 			return
-		if self.lastfont <> None:
+		if self.lastfont is not None:
 			self.d.setfont(self.lastfont)
 		cc = 0
 		for c in te:
@@ -295,7 +295,7 @@ class Para:
 					self.__class__._screenposanchor)
 		finally:
 			self.d = None
-		if ok == None:
+		if ok is None:
 			ascent, descent = self.lines[-1][5:7]
 			ok = self.right, self.bottom - ascent - descent, \
 				self.bottom - descent, self.bottom
@@ -303,7 +303,7 @@ class Para:
 	#
 	def _screenposword(self, tuple, word, h1, v1, h2, v2, isfirst, islast):
 		fo, te, wi, sp, st, as, de = word
-		if fo <> None: self.lastfont = fo
+		if fo is not None: self.lastfont = fo
 		cc = len(te) + (sp > 0)
 		if self.pos > cc:
 			self.pos = self.pos - cc
@@ -324,11 +324,11 @@ class Para:
 	# if pos2 is None, the end is implied.
 	# Undoes its own effect when called again with the same arguments
 	def invert(self, d, pos1, pos2):
-		if pos1 == None:
+		if pos1 is None:
 			pos1 = self.left, self.top, self.top, self.top
 		else:
 			pos1 = self.screenpos(d, pos1)
-		if pos2 == None:
+		if pos2 is None:
 			pos2 = self.right, self.bottom,self.bottom,self.bottom
 		else:
 			pos2 = self.screenpos(d, pos2)

Lib/lib-old/cmp.py

@@ -16,13 +16,13 @@ def cmp(f1, f2, shallow=1):
     Return 1 for identical files, 0 for different.
     Raise exceptions if either file could not be statted, read, etc."""
     s1, s2 = sig(os.stat(f1)), sig(os.stat(f2))
-    if s1[0] <> 8 or s2[0] <> 8:
+    if s1[0] != 8 or s2[0] != 8:
         # Either is a not a plain file -- always report as different
         return 0
     if shallow and s1 == s2:
         # type, size & mtime match -- report same
         return 1
-    if s1[:2] <> s2[:2]: # Types or sizes differ, don't bother
+    if s1[:2] != s2[:2]: # Types or sizes differ, don't bother
         # types or sizes differ -- report different
         return 0
     # same type and size -- look in the cache
@@ -59,5 +59,5 @@ def do_cmp(f1, f2):
     while 1:
         b1 = fp1.read(bufsize)
         b2 = fp2.read(bufsize)
-        if b1 <> b2: return 0
+        if b1 != b2: return 0
         if not b1: return 1

Lib/lib-old/cmpcache.py

@@ -30,7 +30,7 @@ def cmp(f1, f2, shallow=1):
     if shallow and s1 == s2:
         # type, size & mtime match -- report same
         return 1
-    if s1[:2] <> s2[:2]: # Types or sizes differ, don't bother
+    if s1[:2] != s2[:2]: # Types or sizes differ, don't bother
         # types or sizes differ -- report different
         return 0
     # same type and size -- look in the cache
@@ -60,5 +60,5 @@ def do_cmp(f1, f2):
     while 1:
         b1 = fp1.read(bufsize)
         b2 = fp2.read(bufsize)
-        if b1 <> b2: return 0
+        if b1 != b2: return 0
         if not b1: return 1

Lib/lib-old/dircmp.py

@@ -70,7 +70,7 @@ class dircmp:
             if ok:
                 a_type = S_IFMT(a_stat[ST_MODE])
                 b_type = S_IFMT(b_stat[ST_MODE])
-                if a_type <> b_type:
+                if a_type != b_type:
                     self.common_funny.append(x)
                 elif S_ISDIR(a_type):
                     self.common_dirs.append(x)
@@ -189,7 +189,8 @@ def demo():
     import sys
     import getopt
     options, args = getopt.getopt(sys.argv[1:], 'r')
-    if len(args) <> 2: raise getopt.error, 'need exactly two args'
+    if len(args) != 2:
+        raise getopt.error, 'need exactly two args'
     dd = dircmp().new(args[0], args[1])
     dd.run()
     if ('-r', '') in options:

Lib/lib-old/fmt.py

@@ -68,20 +68,20 @@ class SavingBackEnd(NullBackEnd):
 		for i in range(len(self.paralist)):
 			p = self.paralist[i]
 			result = p.whereis(d, h, v)
-			if result <> None:
+			if result is not None:
 				return i, result
 		return None
 	#
 	def roundtowords(self, long1, long2):
 		i, offset = long1
 		text = self.paralist[i].extract()
-		while offset > 0 and text[offset-1] <> ' ': offset = offset-1
+		while offset > 0 and text[offset-1] != ' ': offset = offset-1
 		long1 = i, offset
 		#
 		i, offset = long2
 		text = self.paralist[i].extract()
 		n = len(text)
-		while offset < n-1 and text[offset] <> ' ': offset = offset+1
+		while offset < n-1 and text[offset] != ' ': offset = offset+1
 		long2 = i, offset
 		#
 		return long1, long2
@@ -159,7 +159,7 @@ class BaseFormatter:
 		return Para.Para()
 	#
 	def setfont(self, font):
-		if font == None: return
+		if font is None: return
 		self.font = self.nextfont = font
 		d = self.d
 		d.setfont(font)
@@ -193,7 +193,7 @@ class BaseFormatter:
 		if self.para:
 			self.b.addpara(self.para)
 			self.para = None
-			if self.font <> None:
+			if self.font is not None:
 				self.d.setfont(self.font)
 		self.nospace = 1
 	#
@@ -338,8 +338,8 @@ def finalize(para):
 	para.words.append(('r', '', 0, 0, 0, 0)) # temporary, deleted at end
 	for i in range(len(para.words)):
 		fo, te, wi = para.words[i][:3]
-		if fo <> None: curfont = fo
-		if curfont <> oldfont:
+		if fo is not None: curfont = fo
+		if curfont != oldfont:
 			if closechar.has_key(oldfont):
 				c = closechar[oldfont]
 				j = i-1
@@ -430,7 +430,7 @@ class StdwinBackEnd(SavingBackEnd):
 			pos1 = long1[:3]
 			pos2 = long2[:3]
 			new = pos1, pos2
-		if new <> self.selection:
+		if new != self.selection:
 			d = self.window.begindrawing()
 			if self.selection:
 				self.invert(d, self.selection)
@@ -462,7 +462,7 @@ class StdwinBackEnd(SavingBackEnd):
 	#
 	def search(self, prog):
 		import re, string
-		if type(prog) == type(''):
+		if type(prog) is type(''):
 			prog = re.compile(string.lower(prog))
 		if self.selection:
 			iold = self.selection[0][0]
@@ -551,7 +551,7 @@ class GLFontCache:
 				self.fontcache[fontkey] = \
 					self.fontcache[key] = handle
 		self.fontkey = fontkey
-		if self.fonthandle <> handle:
+		if self.fonthandle != handle:
 			self.fonthandle = handle
 			self.fontinfo = handle.getfontinfo()
 			handle.setfont()
@@ -582,7 +582,7 @@ class GLWriter(GLFontCache):
 	def setfont(self, fontkey):
 		oldhandle = self.fonthandle
 		GLFontCache.setfont(fontkey)
-		if self.fonthandle <> oldhandle:
+		if self.fonthandle != oldhandle:
 			handle.setfont()
 
 
@@ -612,7 +612,7 @@ class GLBackEnd(SavingBackEnd):
 		import gl
 		gl.winset(self.wid)
 		width = gl.getsize()[1]
-		if width <> self.width:
+		if width != self.width:
 			setdocsize = 1
 			self.width = width
 			for p in self.paralist:

Lib/lib-old/grep.py

@@ -73,7 +73,7 @@ def showline(filename, lineno, line, prog):
 		else:
 			prefix = ' ' * len(prefix)
 			for c in line:
-				if c <> '\t': c = ' '
+				if c != '\t': c = ' '
 				prefix = prefix + c
 		if start == end: prefix = prefix + '\\'
 		else: prefix = prefix + '^'*(end-start)

Lib/lib-old/packmail.py

@@ -25,7 +25,7 @@ def pack(outfp, file, name):
 	while 1:
 		line = fp.readline()
 		if not line: break
-		if line[-1:] <> '\n':
+		if line[-1:] != '\n':
 			line = line + '\n'
 		outfp.write('X' + line)
 	outfp.write('!\n')

Lib/lib-old/tb.py

@@ -23,7 +23,7 @@ def browser(tb):
 	ptr = len(tblist)-1
 	tb = tblist[ptr]
 	while 1:
-		if tb <> tblist[ptr]:
+		if tb != tblist[ptr]:
 			tb = tblist[ptr]
 			print `ptr` + ':',
 			printtbheader(tb)
@@ -76,11 +76,11 @@ def browserexec(tb, cmd):
 	except:
 		t, v = sys.exc_info()[:2]
 		print '*** Exception:',
-		if type(t) == type(''):
+		if type(t) is type(''):
 			print t,
 		else:
 			print t.__name__,
-		if v <> None:
+		if v is not None:
 			print ':', v,
 		print
 		print 'Type help to get help.'
@@ -127,24 +127,24 @@ def printsymbols(d):
 		print
 
 def printobject(v, maxlevel):
-	if v == None:
+	if v is None:
 		print 'None',
 	elif type(v) in (type(0), type(0.0)):
 		print v,
-	elif type(v) == type(''):
+	elif type(v) is type(''):
 		if len(v) > 20:
 			print `v[:17] + '...'`,
 		else:
 			print `v`,
-	elif type(v) == type(()):
+	elif type(v) is type(()):
 		print '(',
 		printlist(v, maxlevel)
 		print ')',
-	elif type(v) == type([]):
+	elif type(v) is type([]):
 		print '[',
 		printlist(v, maxlevel)
 		print ']',
-	elif type(v) == type({}):
+	elif type(v) is type({}):
 		print '{',
 		printdict(v, maxlevel)
 		print '}',

Lib/lib-old/zmod.py

@@ -82,13 +82,13 @@ def checkfield(n, p):
 		print inv
 
 def rj(s, width):
-	if type(s) <> type(''): s = `s`
+	if type(s) is not type(''): s = `s`
 	n = len(s)
 	if n >= width: return s
 	return ' '*(width - n) + s
 
 def lj(s, width):
-	if type(s) <> type(''): s = `s`
+	if type(s) is not type(''): s = `s`
 	n = len(s)
 	if n >= width: return s
 	return s + ' '*(width - n)