Update trace.py from 3.14.3 (#7327)

* Update `trace.py` from 3.14.3

* Mark failing tests

Lib/test/test_trace.py

@@ -1,7 +1,7 @@
 import os
 from pickle import dump
 import sys
-from test.support import captured_stdout, requires_resource, requires_gil_enabled
+from test.support import captured_stdout, requires_resource
 from test.support.os_helper import (TESTFN, rmtree, unlink)
 from test.support.script_helper import assert_python_ok, assert_python_failure
 import textwrap
@@ -307,9 +307,9 @@ class TestFuncs(unittest.TestCase):
         }
         self.assertEqual(self.tracer.results().calledfuncs, expected)
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'pre-existing trace function throws off measurements')
-    @requires_gil_enabled("gh-117783: immortalization of types affects traced method names")
     def test_inst_method_calling(self):
         obj = TracedClass(20)
         self.tracer.runfunc(obj.inst_method_calling, 1)
@@ -341,9 +341,9 @@ class TestCallers(unittest.TestCase):
         self.tracer = Trace(count=0, trace=0, countcallers=1)
         self.filemod = my_file_and_modname()
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON
     @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
                      'pre-existing trace function throws off measurements')
-    @requires_gil_enabled("gh-117783: immortalization of types affects traced method names")
     def test_loop_caller_importing(self):
         self.tracer.runfunc(traced_func_importing_caller, 1)
 
@@ -424,7 +424,7 @@ class TestCoverage(unittest.TestCase):
         coverage = {}
         for line in stdout:
             lines, cov, module = line.split()[:3]
-            coverage[module] = (int(lines), int(cov[:-1]))
+            coverage[module] = (float(lines), float(cov[:-1]))
         # XXX This is needed to run regrtest.py as a script
         modname = trace._fullmodname(sys.modules[modname].__file__)
         self.assertIn(modname, coverage)
@@ -568,7 +568,7 @@ class TestCommandLine(unittest.TestCase):
         stdout = stdout.decode()
         self.assertEqual(status, 0)
         self.assertIn('lines   cov%   module   (path)', stdout)
-        self.assertIn(f'6   100%   {modulename}   ({filename})', stdout)
+        self.assertIn(f'6   100.0%   {modulename}   ({filename})', stdout)
 
     def test_run_as_module(self):
         assert_python_ok('-m', 'trace', '-l', '--module', 'timeit', '-n', '1')

Lib/trace.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 # portions copyright 2001, Autonomous Zones Industries, Inc., all rights...
 # err...  reserved and offered to the public under the terms of the
 # Python 2.2 license.
@@ -281,14 +279,13 @@ class CoverageResults:
             n_hits, n_lines = self.write_results_file(coverpath, source,
                                                       lnotab, count, encoding)
             if summary and n_lines:
-                percent = int(100 * n_hits / n_lines)
-                sums[modulename] = n_lines, percent, modulename, filename
+                sums[modulename] = n_lines, n_hits, modulename, filename
 
         if summary and sums:
             print("lines   cov%   module   (path)")
             for m in sorted(sums):
-                n_lines, percent, modulename, filename = sums[m]
-                print("%5d   %3d%%   %s   (%s)" % sums[m])
+                n_lines, n_hits, modulename, filename = sums[m]
+                print(f"{n_lines:5d}   {n_hits/n_lines:.1%}   {modulename}   ({filename})")
 
         if self.outfile:
             # try and store counts and module info into self.outfile
@@ -402,7 +399,7 @@ class Trace:
         @param countfuncs true iff it should just output a list of
                      (filename, modulename, funcname,) for functions
                      that were called at least once;  This overrides
-                     `count' and `trace'
+                     'count' and 'trace'
         @param ignoremods a list of the names of modules to ignore
         @param ignoredirs a list of the names of directories to ignore
                      all of the (recursive) contents of
@@ -534,7 +531,7 @@ class Trace:
     def globaltrace_lt(self, frame, why, arg):
         """Handler for call events.
 
-        If the code block being entered is to be ignored, returns `None',
+        If the code block being entered is to be ignored, returns 'None',
         else returns self.localtrace.
         """
         if why == 'call':
@@ -607,7 +604,7 @@ class Trace:
 def main():
     import argparse
 
-    parser = argparse.ArgumentParser()
+    parser = argparse.ArgumentParser(color=True)
     parser.add_argument('--version', action='version', version='trace 2.0')
 
     grp = parser.add_argument_group('Main options',