diff --git a/Lib/cProfile.py b/Lib/cProfile.py
index 5d04341..3e924ba 100755
--- a/Lib/cProfile.py
+++ b/Lib/cProfile.py
@@ -36,7 +36,7 @@
             result = prof.print_stats(sort)
     return result
 
-def runctx(statement, globals, locals, filename=None):
+def runctx(statement, globals, locals, filename=None, sort=-1):
     """Run statement under profiler, supplying your own globals and locals,
     optionally saving results in filename.
 
@@ -53,7 +53,7 @@
         if filename is not None:
             prof.dump_stats(filename)
         else:
-            result = prof.print_stats()
+            result = prof.print_stats(sort)
     return result
 
 # Backwards compatibility.
@@ -169,7 +169,8 @@
     parser.add_option('-o', '--outfile', dest="outfile",
         help="Save stats to <outfile>", default=None)
     parser.add_option('-s', '--sort', dest="sort",
-        help="Sort order when printing to stdout, based on pstats.Stats class", default=-1)
+        help="Sort order when printing to stdout, based on pstats.Stats class",
+        default=-1)
 
     if not sys.argv[1:]:
         parser.print_usage()
@@ -178,14 +179,18 @@
     (options, args) = parser.parse_args()
     sys.argv[:] = args
 
-    if (len(sys.argv) > 0):
-        sys.path.insert(0, os.path.dirname(sys.argv[0]))
-        fp = open(sys.argv[0])
-        try:
-            script = fp.read()
-        finally:
-            fp.close()
-        run('exec(%r)' % script, options.outfile, options.sort)
+    if len(args) > 0:
+        progname = args[0]
+        sys.path.insert(0, os.path.dirname(progname))
+        with open(progname, 'rb') as fp:
+            code = compile(fp.read(), progname, 'exec')
+        globs = {
+            '__file__': progname,
+            '__name__': '__main__',
+            '__package__': None,
+            '__cached__': None,
+        }
+        runctx(code, globs, None, options.outfile, options.sort)
     else:
         parser.print_usage()
     return parser
diff --git a/Lib/curses/wrapper.py b/Lib/curses/wrapper.py
index 9f1d867..3cdaa82 100644
--- a/Lib/curses/wrapper.py
+++ b/Lib/curses/wrapper.py
@@ -17,10 +17,9 @@
     wrapper().
     """
 
-    res = None
     try:
         # Initialize curses
-        stdscr=curses.initscr()
+        stdscr = curses.initscr()
 
         # Turn off echoing of keys, and enter cbreak mode,
         # where no buffering is performed on keyboard input
diff --git a/Lib/distutils/command/bdist_msi.py b/Lib/distutils/command/bdist_msi.py
index c4be47b..8a458d8 100644
--- a/Lib/distutils/command/bdist_msi.py
+++ b/Lib/distutils/command/bdist_msi.py
@@ -148,7 +148,7 @@
             if not self.skip_build and self.distribution.has_ext_modules()\
                and self.target_version != short_version:
                 raise DistutilsOptionError(
-                      "target version can only be %s, or the '--skip_build'"
+                      "target version can only be %s, or the '--skip-build'"
                       " option must be specified" % (short_version,))
         else:
             self.versions = list(self.all_versions)
diff --git a/Lib/distutils/command/bdist_wininst.py b/Lib/distutils/command/bdist_wininst.py
index d6d01c6..3aa1dac 100644
--- a/Lib/distutils/command/bdist_wininst.py
+++ b/Lib/distutils/command/bdist_wininst.py
@@ -89,7 +89,7 @@
             short_version = get_python_version()
             if self.target_version and self.target_version != short_version:
                 raise DistutilsOptionError(
-                      "target version can only be %s, or the '--skip_build'" \
+                      "target version can only be %s, or the '--skip-build'" \
                       " option must be specified" % (short_version,))
             self.target_version = short_version
 
diff --git a/Lib/json/__init__.py b/Lib/json/__init__.py
index 6a18518..5d8cb19 100644
--- a/Lib/json/__init__.py
+++ b/Lib/json/__init__.py
@@ -125,14 +125,12 @@
     ``.write()``-supporting file-like object).
 
     If ``skipkeys`` is true then ``dict`` keys that are not basic types
-    (``str``, ``unicode``, ``int``, ``float``, ``bool``, ``None``) will be
-    skipped instead of raising a ``TypeError``.
+    (``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped
+    instead of raising a ``TypeError``.
 
-    If ``ensure_ascii`` is false, then the some chunks written to ``fp``
-    may be ``unicode`` instances, subject to normal Python ``str`` to
-    ``unicode`` coercion rules. Unless ``fp.write()`` explicitly
-    understands ``unicode`` (as in ``codecs.getwriter()``) this is likely
-    to cause an error.
+    If ``ensure_ascii`` is false, then the strings written to ``fp`` can
+    contain non-ASCII characters if they appear in strings contained in
+    ``obj``. Otherwise, all such characters are escaped in JSON strings.
 
     If ``check_circular`` is false, then the circular reference check
     for container types will be skipped and a circular reference will
@@ -185,12 +183,12 @@
     """Serialize ``obj`` to a JSON formatted ``str``.
 
     If ``skipkeys`` is false then ``dict`` keys that are not basic types
-    (``str``, ``unicode``, ``int``, ``float``, ``bool``, ``None``) will be
-    skipped instead of raising a ``TypeError``.
+    (``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped
+    instead of raising a ``TypeError``.
 
-    If ``ensure_ascii`` is false, then the return value will be a
-    ``unicode`` instance subject to normal Python ``str`` to ``unicode``
-    coercion rules instead of being escaped to an ASCII ``str``.
+    If ``ensure_ascii`` is false, then the return value can contain non-ASCII
+    characters if they appear in strings contained in ``obj``. Otherwise, all
+    such characters are escaped in JSON strings.
 
     If ``check_circular`` is false, then the circular reference check
     for container types will be skipped and a circular reference will
diff --git a/Lib/json/decoder.py b/Lib/json/decoder.py
index 475b390..3e7405b 100644
--- a/Lib/json/decoder.py
+++ b/Lib/json/decoder.py
@@ -263,9 +263,9 @@
     +---------------+-------------------+
     | array         | list              |
     +---------------+-------------------+
-    | string        | unicode           |
+    | string        | str               |
     +---------------+-------------------+
-    | number (int)  | int, long         |
+    | number (int)  | int               |
     +---------------+-------------------+
     | number (real) | float             |
     +---------------+-------------------+
@@ -318,8 +318,8 @@
 
 
     def decode(self, s, _w=WHITESPACE.match):
-        """Return the Python representation of ``s`` (a ``str`` or ``unicode``
-        instance containing a JSON document)
+        """Return the Python representation of ``s`` (a ``str`` instance
+        containing a JSON document).
 
         """
         obj, end = self.raw_decode(s, idx=_w(s, 0).end())
@@ -329,8 +329,8 @@
         return obj
 
     def raw_decode(self, s, idx=0):
-        """Decode a JSON document from ``s`` (a ``str`` or ``unicode``
-        beginning with a JSON document) and return a 2-tuple of the Python
+        """Decode a JSON document from ``s`` (a ``str`` beginning with
+        a JSON document) and return a 2-tuple of the Python
         representation and the index in ``s`` where the document ended.
 
         This can be used to decode a JSON document from a string that may
diff --git a/Lib/json/encoder.py b/Lib/json/encoder.py
index d068e72..1335985 100644
--- a/Lib/json/encoder.py
+++ b/Lib/json/encoder.py
@@ -77,9 +77,9 @@
     +-------------------+---------------+
     | list, tuple       | array         |
     +-------------------+---------------+
-    | str, unicode      | string        |
+    | str               | string        |
     +-------------------+---------------+
-    | int, long, float  | number        |
+    | int, float        | number        |
     +-------------------+---------------+
     | True              | true          |
     +-------------------+---------------+
@@ -102,12 +102,12 @@
         """Constructor for JSONEncoder, with sensible defaults.
 
         If skipkeys is false, then it is a TypeError to attempt
-        encoding of keys that are not str, int, long, float or None.  If
+        encoding of keys that are not str, int, float or None.  If
         skipkeys is True, such items are simply skipped.
 
         If ensure_ascii is true, the output is guaranteed to be str
-        objects with all incoming unicode characters escaped.  If
-        ensure_ascii is false, the output will be unicode object.
+        objects with all incoming non-ASCII characters escaped.  If
+        ensure_ascii is false, the output can contain non-ASCII characters.
 
         If check_circular is true, then lists, dicts, and custom encoded
         objects will be checked for circular references during encoding to
diff --git a/Lib/profile.py b/Lib/profile.py
index 2a96ba8..3b239d1 100755
--- a/Lib/profile.py
+++ b/Lib/profile.py
@@ -75,7 +75,7 @@
     else:
         return prof.print_stats(sort)
 
-def runctx(statement, globals, locals, filename=None):
+def runctx(statement, globals, locals, filename=None, sort=-1):
     """Run statement under profiler, supplying your own globals and locals,
     optionally saving results in filename.
 
@@ -90,7 +90,7 @@
     if filename is not None:
         prof.dump_stats(filename)
     else:
-        return prof.print_stats()
+        return prof.print_stats(sort)
 
 # Backwards compatibility.
 def help():
@@ -598,20 +598,28 @@
     parser.add_option('-o', '--outfile', dest="outfile",
         help="Save stats to <outfile>", default=None)
     parser.add_option('-s', '--sort', dest="sort",
-        help="Sort order when printing to stdout, based on pstats.Stats class", default=-1)
+        help="Sort order when printing to stdout, based on pstats.Stats class",
+        default=-1)
 
     if not sys.argv[1:]:
         parser.print_usage()
         sys.exit(2)
 
     (options, args) = parser.parse_args()
+    sys.argv[:] = args
 
-    if (len(args) > 0):
-        sys.argv[:] = args
-        sys.path.insert(0, os.path.dirname(sys.argv[0]))
-        with open(sys.argv[0], 'rb') as fp:
-            script = fp.read()
-        run('exec(%r)' % script, options.outfile, options.sort)
+    if len(args) > 0:
+        progname = args[0]
+        sys.path.insert(0, os.path.dirname(progname))
+        with open(progname, 'rb') as fp:
+            code = compile(fp.read(), progname, 'exec')
+        globs = {
+            '__file__': progname,
+            '__name__': '__main__',
+            '__package__': None,
+            '__cached__': None,
+        }
+        runctx(code, globs, None, options.outfile, options.sort)
     else:
         parser.print_usage()
     return parser
diff --git a/Lib/pstats.py b/Lib/pstats.py
index d856245..81d9d0d 100644
--- a/Lib/pstats.py
+++ b/Lib/pstats.py
@@ -5,7 +5,7 @@
 # Based on prior profile module by Sjoerd Mullender...
 #   which was hacked somewhat by: Guido van Rossum
 #
-# see profile.doc and profile.py for more info.
+# see profile.py for more info.
 
 # Copyright 1994, by InfoSeek Corporation, all rights reserved.
 # Written by James Roskind
@@ -65,7 +65,7 @@
     minor key of 'the name of the function'.  Look at the two tables in
     sort_stats() and get_sort_arg_defs(self) for more examples.
 
-    All methods return self,  so you can string together commands like:
+    All methods return self, so you can string together commands like:
         Stats('foo', 'goo').strip_dirs().sort_stats('calls').\
                             print_stats(5).print_callers(5)
     """
@@ -149,7 +149,7 @@
         if not arg_list: return self
         if len(arg_list) > 1: self.add(*arg_list[1:])
         other = arg_list[0]
-        if type(self) != type(other) or self.__class__ != other.__class__:
+        if type(self) != type(other):
             other = Stats(other)
         self.files += other.files
         self.total_calls += other.total_calls
@@ -217,12 +217,12 @@
         if not field:
             self.fcn_list = 0
             return self
-        if len(field) == 1 and type(field[0]) == type(1):
+        if len(field) == 1 and isinstance(field[0], int):
             # Be compatible with old profiler
             field = [ {-1: "stdname",
-                      0:"calls",
-                      1:"time",
-                      2: "cumulative" }  [ field[0] ] ]
+                       0:  "calls",
+                       1:  "time",
+                       2:  "cumulative"}[field[0]] ]
 
         sort_arg_defs = self.get_sort_arg_defs()
         sort_tuple = ()
@@ -299,48 +299,53 @@
 
     def eval_print_amount(self, sel, list, msg):
         new_list = list
-        if type(sel) == type(""):
+        if isinstance(sel, str):
+            try:
+                rex = re.compile(sel)
+            except re.error:
+                msg += "   <Invalid regular expression %r>\n" % sel
+                return new_list, msg
             new_list = []
             for func in list:
-                if re.search(sel, func_std_string(func)):
+                if rex.search(func_std_string(func)):
                     new_list.append(func)
         else:
             count = len(list)
-            if type(sel) == type(1.0) and 0.0 <= sel < 1.0:
+            if isinstance(sel, float) and 0.0 <= sel < 1.0:
                 count = int(count * sel + .5)
                 new_list = list[:count]
-            elif type(sel) == type(1) and 0 <= sel < count:
+            elif isinstance(sel, int) and 0 <= sel < count:
                 count = sel
                 new_list = list[:count]
         if len(list) != len(new_list):
-            msg = msg + "   List reduced from %r to %r due to restriction <%r>\n" % (
-                         len(list), len(new_list), sel)
+            msg += "   List reduced from %r to %r due to restriction <%r>\n" % (
+                len(list), len(new_list), sel)
 
         return new_list, msg
 
     def get_print_list(self, sel_list):
         width = self.max_name_len
         if self.fcn_list:
-            list = self.fcn_list[:]
+            stat_list = self.fcn_list[:]
             msg = "   Ordered by: " + self.sort_type + '\n'
         else:
-            list = self.stats.keys()
+            stat_list = list(self.stats.keys())
             msg = "   Random listing order was used\n"
 
         for selection in sel_list:
-            list, msg = self.eval_print_amount(selection, list, msg)
+            stat_list, msg = self.eval_print_amount(selection, stat_list, msg)
 
-        count = len(list)
+        count = len(stat_list)
 
-        if not list:
-            return 0, list
+        if not stat_list:
+            return 0, stat_list
         print(msg, file=self.stream)
         if count < len(self.stats):
             width = 0
-            for func in list:
+            for func in stat_list:
                 if  len(func_std_string(func)) > width:
                     width = len(func_std_string(func))
-        return width+2, list
+        return width+2, stat_list
 
     def print_stats(self, *amount):
         for filename in self.files:
@@ -561,12 +566,10 @@
         def __init__(self, profile=None):
             cmd.Cmd.__init__(self)
             self.prompt = "% "
+            self.stats = None
+            self.stream = sys.stdout
             if profile is not None:
-                self.stats = Stats(profile)
-                self.stream = self.stats.stream
-            else:
-                self.stats = None
-                self.stream = sys.stdout
+                self.do_read(profile)
 
         def generic(self, fn, line):
             args = line.split()
diff --git a/Lib/trace.py b/Lib/trace.py
index 7260d3e..5a77662 100644
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -487,8 +487,8 @@
         import __main__
         dict = __main__.__dict__
         if not self.donothing:
-            sys.settrace(self.globaltrace)
             threading.settrace(self.globaltrace)
+            sys.settrace(self.globaltrace)
         try:
             exec(cmd, dict, dict)
         finally:
@@ -500,8 +500,8 @@
         if globals is None: globals = {}
         if locals is None: locals = {}
         if not self.donothing:
-            sys.settrace(self.globaltrace)
             threading.settrace(self.globaltrace)
+            sys.settrace(self.globaltrace)
         try:
             exec(cmd, globals, locals)
         finally:
@@ -616,7 +616,7 @@
                 print('%.2f' % (time.time() - self.start_time), end=' ')
             bname = os.path.basename(filename)
             print("%s(%d): %s" % (bname, lineno,
-                                  linecache.getline(filename, lineno)), end=' ')
+                                  linecache.getline(filename, lineno)), end='')
         return self.localtrace
 
     def localtrace_trace(self, frame, why, arg):
@@ -629,7 +629,7 @@
                 print('%.2f' % (time.time() - self.start_time), end=' ')
             bname = os.path.basename(filename)
             print("%s(%d): %s" % (bname, lineno,
-                                  linecache.getline(filename, lineno)), end=' ')
+                                  linecache.getline(filename, lineno)), end='')
         return self.localtrace
 
     def localtrace_count(self, frame, why, arg):