lsprofcalltree: use print function

While I was here, some single element tuples have been removed in
favor of the shorter syntax. Some commented lines of code containing
print statements have also been removed because it was unclear what
purpose they served.

mercurial/lsprofcalltree.py

@@ -10,7 +10,7 b' This software may be used and distribute'
 of the GNU General Public License, incorporated herein by reference.
 """
 
-from __future__ import absolute_import
+from __future__ import absolute_import, print_function
 
 def label(code):
     if isinstance(code, str):
@@ -27,7 +27,7 b' class KCacheGrind(object):'
 
     def output(self, out_file):
         self.out_file = out_file
-        print >> out_file, 'events: Ticks'
+        print('events: Ticks', file=out_file)
         self._print_summary()
         for entry in self.data:
             self._entry(entry)
@@ -37,24 +37,23 b' class KCacheGrind(object):'
         for entry in self.data:
             totaltime = int(entry.totaltime * 1000)
             max_cost = max(max_cost, totaltime)
-        print >> self.out_file, 'summary: %d' % (max_cost,)
+        print('summary: %d' % max_cost, file=self.out_file)
 
     def _entry(self, entry):
         out_file = self.out_file
 
         code = entry.code
-        #print >> out_file, 'ob=%s' % (code.co_filename,)
         if isinstance(code, str):
-            print >> out_file, 'fi=~'
+            print('fi=~', file=out_file)
         else:
-            print >> out_file, 'fi=%s' % (code.co_filename,)
-        print >> out_file, 'fn=%s' % (label(code),)
+            print('fi=%s' % code.co_filename, file=out_file)
+        print('fn=%s' % label(code), file=out_file)
 
         inlinetime = int(entry.inlinetime * 1000)
         if isinstance(code, str):
-            print >> out_file, '0 ', inlinetime
+            print('0 ', inlinetime, file=out_file)
         else:
-            print >> out_file, '%d %d' % (code.co_firstlineno, inlinetime)
+            print('%d %d' % (code.co_firstlineno, inlinetime), file=out_file)
 
         # recursive calls are counted in entry.calls
         if entry.calls:
@@ -69,20 +68,19 b' class KCacheGrind(object):'
 
         for subentry in calls:
             self._subentry(lineno, subentry)
-        print >> out_file
+        print(file=out_file)
 
     def _subentry(self, lineno, subentry):
         out_file = self.out_file
         code = subentry.code
-        #print >> out_file, 'cob=%s' % (code.co_filename,)
-        print >> out_file, 'cfn=%s' % (label(code),)
+        print('cfn=%s' % label(code), file=out_file)
         if isinstance(code, str):
-            print >> out_file, 'cfi=~'
-            print >> out_file, 'calls=%d 0' % (subentry.callcount,)
+            print('cfi=~', file=out_file)
+            print('calls=%d 0' % subentry.callcount, file=out_file)
         else:
-            print >> out_file, 'cfi=%s' % (code.co_filename,)
-            print >> out_file, 'calls=%d %d' % (
-                subentry.callcount, code.co_firstlineno)
+            print('cfi=%s' % code.co_filename, file=out_file)
+            print('calls=%d %d' % (
+                subentry.callcount, code.co_firstlineno), file=out_file)
 
         totaltime = int(subentry.totaltime * 1000)
-        print >> out_file, '%d %d' % (lineno, totaltime)
+        print('%d %d' % (lineno, totaltime), file=out_file)

tests/test-check-py3-compat.t

@@ -100,7 +100,6 b''
   i18n/polib.py not using absolute_import
   mercurial/cmdutil.py not using absolute_import
   mercurial/commands.py not using absolute_import
-  mercurial/lsprofcalltree.py requires print_function
   mercurial/mail.py requires print_function
   setup.py not using absolute_import
   tests/filterpyflakes.py requires print_function