Use print as a function for Python 3 [PEP 3105]

Import print_function from the __future__ module
to activate this for Python 2.  This works as far back as Python 2.6.0a2:
   https://docs.python.org/2/library/__future__.html

[PEP 3105] https://www.python.org/dev/peps/pep-3105/

4 files changed, 56 insertions, 52 deletions

diff --git a/tools/debugscripts/kld_deb.py b/tools/debugscripts/kld_deb.py
index 5cf0167..167b3dc 100644
--- a/tools/debugscripts/kld_deb.py
+++ b/tools/debugscripts/kld_deb.py
@@ -26,6 +26,7 @@
 #
 # $FreeBSD$
 
+from __future__ import print_function
 import sys
 import os
 import popen2
@@ -42,7 +43,7 @@ printre = re.compile(r'\$\d+\s+=\s+')
 kld_debug_paths = []
 
 if len(sys.argv[1:]) < 2:
-	print 'Usage: prog <kerncomp> <core> [<paths>]'
+	print('Usage: prog <kerncomp> <core> [<paths>]')
 	sys.exit(1)
 
 #Get the base modules path
@@ -129,7 +130,7 @@ for i in addr[1:]:
 		#Tell our user that we couldn't find it.
 		a = i[1]
 		sys.stderr.write("Can't find module: %s (addr: %d + header)\n" % (i[0], a))
-		print '#add-symbol-file <file>', a, '#add header'
+		print('#add-symbol-file <file>', a, '#add header')
 		continue
 
 	#j = popen2.popen4('objdump --section-headers /boot/kernel/%s | grep "\.text"' % i[0])[0].read().strip().split()
@@ -137,6 +138,6 @@ for i in addr[1:]:
 	j = popen2.popen4('objdump --section-headers "%s" | grep "\.text"' % p)[0].read().strip().split()
 	try:
 		a = int(j[5], 16)
-		print 'add-symbol-file', p, i[1] + a
+		print('add-symbol-file', p, i[1] + a)
 	except IndexError:
 		sys.stderr.write('Bad file: %s, address: %d\n' % (i[0], i[1]))
diff --git a/tools/regression/netinet/ip_id_period/ip_id_period.py b/tools/regression/netinet/ip_id_period/ip_id_period.py
index ba84321..c04f5a4 100644
--- a/tools/regression/netinet/ip_id_period/ip_id_period.py
+++ b/tools/regression/netinet/ip_id_period/ip_id_period.py
@@ -27,6 +27,7 @@
 # code.  It will push 200000 packets, then report back what the min and max
 # periods it saw for different IDs were.
 
+from __future__ import print_function
 import os
 import signal
 import subprocess
diff --git a/tools/sched/schedgraph.py b/tools/sched/schedgraph.py
index 0723dc3..6d8a4b9 100644
--- a/tools/sched/schedgraph.py
+++ b/tools/sched/schedgraph.py
@@ -26,6 +26,7 @@
 #
 # $FreeBSD$
 
+from __future__ import print_function
 import sys
 import re
 import random
@@ -142,7 +143,7 @@ class Colormap:
 			color = self.map[name]
 		except:
 			color = colors[random.randrange(0, len(colors))]
-			print "Picking random color", color, "for", name
+			print("Picking random color", color, "for", name)
 			self.map[name] = color
 			self.table.append((name, color))
 		return (color)
@@ -736,9 +737,9 @@ class StateEvent(Event):
 		color = colormap.lookup(self.name)
 		if (duration < 0):
 			duration = 0
-			print "Unsynchronized timestamp"
-			print self.cpu, self.timestamp
-			print next.cpu, next.timestamp
+			print("Unsynchronized timestamp")
+			print(self.cpu, self.timestamp)
+			print(next.cpu, next.timestamp)
 		delta = duration / canvas.ratio
 		l = canvas.create_rectangle(xpos, ypos,
 		    xpos + delta, ypos - 10, fill=color, width=0,
@@ -762,9 +763,9 @@ class CountEvent(Event):
 		self.duration = duration = next.timestamp - self.timestamp
 		if (duration < 0):
 			duration = 0
-			print "Unsynchronized timestamp"
-			print self.cpu, self.timestamp
-			print next.cpu, next.timestamp
+			print("Unsynchronized timestamp")
+			print(self.cpu, self.timestamp)
+			print(next.cpu, next.timestamp)
 		self.attrs.insert(0, ("count", self.count))
 		self.attrs.insert(1, ("duration", ticks2sec(duration)))
 		delta = duration / canvas.ratio
@@ -941,7 +942,7 @@ class KTRFile:
 		try:
 			ifp = open(file)
 		except:
-			print "Can't open", file
+			print("Can't open", file)
 			sys.exit(1)
 
 		# quoteexp matches a quoted string, no escaping
@@ -989,14 +990,14 @@ class KTRFile:
 				status.startup("Parsing line " + str(lineno))
 			m = ktrre.match(line);
 			if (m == None):
-				print "Can't parse", lineno, line,
+				print("Can't parse", lineno, line, end=' ')
 				continue;
 			(index, cpu, timestamp, group, id, type, dat, dat1, attrstring) = m.groups();
 			if (dat == None):
 				dat = dat1
 			if (self.checkstamp(timestamp) == 0):
-				print "Bad timestamp at", lineno, ":",
-				print cpu, timestamp 
+				print("Bad timestamp at", lineno, ":", end=' ')
+				print(cpu, timestamp) 
 				continue
 			#
 			# Build the table of optional attributes
@@ -1032,7 +1033,7 @@ class KTRFile:
 			args = (dat, cpu, timestamp, attrs)
 			e = self.makeevent(group, id, type, args)
 			if (e == None):
-				print "Unknown type", type, lineno, line,
+				print("Unknown type", type, lineno, line, end=' ')
 
 	def makeevent(self, group, id, type, args):
 		e = None
@@ -1098,9 +1099,9 @@ class KTRFile:
 		if (self.stathz != 0):
 			return (self.timespan() / self.ticks[0]) * int(self.stathz)
 		# Pretend we have a 1ns clock
-		print "WARNING: No clock discovered and no frequency ",
-		print "specified via the command line."
-		print "Using fake 1ghz clock"
+		print("WARNING: No clock discovered and no frequency ", end=' ')
+		print("specified via the command line.")
+		print("Using fake 1ghz clock")
 		return (oneghz);
 
 	def fixup(self):
@@ -1624,7 +1625,7 @@ class SchedGraph(Frame):
 		return self.display.getstate(tag)
 
 if (len(sys.argv) != 2 and len(sys.argv) != 3):
-	print "usage:", sys.argv[0], "<ktr file> [clock freq in ghz]"
+	print("usage:", sys.argv[0], "<ktr file> [clock freq in ghz]")
 	sys.exit(1)
 
 if (len(sys.argv) > 2):
diff --git a/tools/tools/shlib-compat/shlib-compat.py b/tools/tools/shlib-compat/shlib-compat.py
index c0fb2d2..2d970b5 100755
--- a/tools/tools/shlib-compat/shlib-compat.py
+++ b/tools/tools/shlib-compat/shlib-compat.py
@@ -26,6 +26,7 @@
 #
 # $FreeBSD$
 
+from __future__ import print_function
 import os
 import sys
 import re
@@ -78,7 +79,7 @@ class App(object):
 
 def warn(cond, msg):
     if cond:
-        print >> sys.stderr, "WARN: " + msg
+        print("WARN: " + msg, file=sys.stderr)
 
 # {{{ misc
 
@@ -694,12 +695,12 @@ class Shlib(object):
                             (sym.name_ver, self.libfile, sym.offset))
                     continue
                 if Config.verbose >= 3:
-                    print "Parsing symbol %s (%s)" % (sym.name_ver, self.libfile)
+                    print("Parsing symbol %s (%s)" % (sym.name_ver, self.libfile))
                 sym.definition = dwarf.build(raw)
 
     def parse(self):
         if not os.path.isfile(self.libfile):
-            print >> sys.stderr, ("No such file: %s" % self.libfile)
+            print("No such file: %s" % self.libfile, file=sys.stderr)
             sys.exit(1)
         self.parse_objdump()
         self.parse_dwarfdump()
@@ -722,7 +723,7 @@ class Parser(object):
                 self.parser(line)
         err = fd.close()
         if err:
-            print >> sys.stderr, ("Execution failed: %s" % self.proc)
+            print("Execution failed: %s" % self.proc, file=sys.stderr)
             sys.exit(2)
 
     def parse_begin(self, line):
@@ -964,16 +965,16 @@ def common_symbols(origlib, newlib):
     result = []
     verdiff = ListDiff(origlib.versions.keys(), newlib.versions.keys())
     if Config.verbose >= 1:
-        print 'Original versions:   ', list_str(verdiff.orig)
-        print 'New versions:        ', list_str(verdiff.new)
+        print('Original versions:   ', list_str(verdiff.orig))
+        print('New versions:        ', list_str(verdiff.new))
     for vername in verdiff.added:
-        print 'Added version:       ', vername
-        print '    Added symbols:   ', \
-                names_ver_str(vername, newlib.versions[vername].names())
+        print('Added version:       ', vername)
+        print('    Added symbols:   ', \
+                names_ver_str(vername, newlib.versions[vername].names()))
     for vername in verdiff.removed:
-        print 'Removed version:     ', vername
-        print '    Removed symbols: ', \
-                names_ver_str(vername, origlib.versions[vername].names())
+        print('Removed version:     ', vername)
+        print('    Removed symbols: ', \
+                names_ver_str(vername, origlib.versions[vername].names()))
     added = []
     removed = []
     for vername in verdiff.common:
@@ -990,13 +991,13 @@ def common_symbols(origlib, newlib):
             sym = CommonSymbol(origver.symbols[n], newver.symbols[n])
             commonver.append(sym)
     if added:
-        print 'Added symbols:'
+        print('Added symbols:')
         for i in added:
-            print '    ', i
+            print('    ', i)
     if removed:
-        print 'Removed symbols:'
+        print('Removed symbols:')
         for i in removed:
-            print '    ', i
+            print('    ', i)
     return result
 
 def cmp_symbols(commonver):
@@ -1011,27 +1012,27 @@ def cmp_symbols(commonver):
                 App.result_code = 1
             if Config.verbose >= 1 or not match:
                 if missing:
-                    print '%s: missing definition' % \
-                            (sym.origsym.name_ver,)
+                    print('%s: missing definition' % \
+                            (sym.origsym.name_ver,))
                     continue
-                print '%s: definitions %smatch' % \
-                        (sym.origsym.name_ver, "" if match else "mis")
+                print('%s: definitions %smatch' % \
+                        (sym.origsym.name_ver, "" if match else "mis"))
                 if Config.dump or (not match and not Config.no_dump):
                     for x in [(sym.origsym, Config.origfile),
                             (sym.newsym, Config.newfile)]:
                         xsym = x[0]
                         xout = x[1].out
                         if not xsym.definition:
-                            print >> xout, '\n// Definition not found: %s %s' % \
-                                    (xsym.name_ver, xsym.lib.libfile)
+                            print('\n// Definition not found: %s %s' % \
+                                    (xsym.name_ver, xsym.lib.libfile), file=xout)
                             continue
-                        print >> xout, '\n// Definitions mismatch: %s %s' % \
-                                (xsym.name_ver, xsym.lib.libfile)
+                        print('\n// Definitions mismatch: %s %s' % \
+                                (xsym.name_ver, xsym.lib.libfile), file=xout)
                         pp = PrettyPrinter()
                         pp.run(xsym.definition)
                         for i in pp.nested():
-                            print >> xout, i
-                        print >> xout, pp.result()
+                            print(i, file=xout)
+                        print(pp.result(), file=xout)
 
 def dump_symbols(commonver):
     class SymbolDump(object):
@@ -1043,13 +1044,13 @@ def dump_symbols(commonver):
             r = self.pp.run(sym.definition)
             self.res.append('/* %s@%s */ %s' % (sym.name, sym.version, r))
         def finish(self):
-            print >> self.io_conf.out, '\n// Symbol dump: version %s, library %s' % \
-                    (ver.name, self.io_conf.filename)
+            print('\n// Symbol dump: version %s, library %s' % \
+                    (ver.name, self.io_conf.filename), file=self.io_conf.out)
             for i in self.pp.nested():
-                print >> self.io_conf.out, i
-            print >> self.io_conf.out, ''
+                print(i, file=self.io_conf.out)
+            print('', file=self.io_conf.out)
             for i in self.res:
-                print >> self.io_conf.out, i
+                print(i, file=self.io_conf.out)
     for ver in commonver:
         names = sorted(ver.names());
         d_orig = SymbolDump(Config.origfile)
@@ -1150,7 +1151,7 @@ if __name__ == '__main__':
         dump_symbols(commonver)
     cmp_symbols(commonver)
     if Config.verbose >= 4:
-        print Dwarf.cmpcache.stats.show('Cmp')
-        print DwarfdumpParser.tagcache_stats.show('Dwarf tag')
+        print(Dwarf.cmpcache.stats.show('Cmp'))
+        print(DwarfdumpParser.tagcache_stats.show('Dwarf tag'))
 
     sys.exit(App.result_code)