Upgrade to coverage 3.7.1 and have it auto-build itself on first use.

third_party/coverage-3.6/coverage/execfile.py

Index: third_party/coverage-3.6/coverage/execfile.py
diff --git a/third_party/coverage-3.6/coverage/execfile.py b/third_party/coverage-3.6/coverage/execfile.py
deleted file mode 100644
index 587c2d3cd927e8d79b94649ce283fde3050ae3d0..0000000000000000000000000000000000000000
--- a/third_party/coverage-3.6/coverage/execfile.py
+++ /dev/null
@@ -1,138 +0,0 @@
-"""Execute files of Python code."""
-
-import imp, os, sys
-
-from coverage.backward import exec_code_object, open_source
-from coverage.misc import NoSource, ExceptionDuringRun
-
-
-try:
-    # In Py 2.x, the builtins were in __builtin__
-    BUILTINS = sys.modules['__builtin__']
-except KeyError:
-    # In Py 3.x, they're in builtins
-    BUILTINS = sys.modules['builtins']
-
-
-def rsplit1(s, sep):
-    """The same as s.rsplit(sep, 1), but works in 2.3"""
-    parts = s.split(sep)
-    return sep.join(parts[:-1]), parts[-1]
-
-
-def run_python_module(modulename, args):
-    """Run a python module, as though with ``python -m name args...``.
-
-    `modulename` is the name of the module, possibly a dot-separated name.
-    `args` is the argument array to present as sys.argv, including the first
-    element naming the module being executed.
-
-    """
-    openfile = None
-    glo, loc = globals(), locals()
-    try:
-        try:
-            # Search for the module - inside its parent package, if any - using
-            # standard import mechanics.
-            if '.' in modulename:
-                packagename, name = rsplit1(modulename, '.')
-                package = __import__(packagename, glo, loc, ['__path__'])
-                searchpath = package.__path__
-            else:
-                packagename, name = None, modulename
-                searchpath = None  # "top-level search" in imp.find_module()
-            openfile, pathname, _ = imp.find_module(name, searchpath)
-
-            # Complain if this is a magic non-file module.
-            if openfile is None and pathname is None:
-                raise NoSource(
-                    "module does not live in a file: %r" % modulename
-                    )
-
-            # If `modulename` is actually a package, not a mere module, then we
-            # pretend to be Python 2.7 and try running its __main__.py script.
-            if openfile is None:
-                packagename = modulename
-                name = '__main__'
-                package = __import__(packagename, glo, loc, ['__path__'])
-                searchpath = package.__path__
-                openfile, pathname, _ = imp.find_module(name, searchpath)
-        except ImportError:
-            _, err, _ = sys.exc_info()
-            raise NoSource(str(err))
-    finally:
-        if openfile:
-            openfile.close()
-
-    # Finally, hand the file off to run_python_file for execution.
-    args[0] = pathname
-    run_python_file(pathname, args, package=packagename)
-
-
-def run_python_file(filename, args, package=None):
-    """Run a python file as if it were the main program on the command line.
-
-    `filename` is the path to the file to execute, it need not be a .py file.
-    `args` is the argument array to present as sys.argv, including the first
-    element naming the file being executed.  `package` is the name of the
-    enclosing package, if any.
-
-    """
-    # Create a module to serve as __main__
-    old_main_mod = sys.modules['__main__']
-    main_mod = imp.new_module('__main__')
-    sys.modules['__main__'] = main_mod
-    main_mod.__file__ = filename
-    if package:
-        main_mod.__package__ = package
-    main_mod.__builtins__ = BUILTINS
-
-    # Set sys.argv and the first path element properly.
-    old_argv = sys.argv
-    old_path0 = sys.path[0]
-    sys.argv = args
-    if package:
-        sys.path[0] = ''
-    else:
-        sys.path[0] = os.path.abspath(os.path.dirname(filename))
-
-    try:
-        # Open the source file.
-        try:
-            source_file = open_source(filename)
-        except IOError:
-            raise NoSource("No file to run: %r" % filename)
-
-        try:
-            source = source_file.read()
-        finally:
-            source_file.close()
-
-        # We have the source.  `compile` still needs the last line to be clean,
-        # so make sure it is, then compile a code object from it.
-        if not source or source[-1] != '\n':
-            source += '\n'
-        code = compile(source, filename, "exec")
-
-        # Execute the source file.
-        try:
-            exec_code_object(code, main_mod.__dict__)
-        except SystemExit:
-            # The user called sys.exit().  Just pass it along to the upper
-            # layers, where it will be handled.
-            raise
-        except:
-            # Something went wrong while executing the user code.
-            # Get the exc_info, and pack them into an exception that we can
-            # throw up to the outer loop.  We peel two layers off the traceback
-            # so that the coverage.py code doesn't appear in the final printed
-            # traceback.
-            typ, err, tb = sys.exc_info()
-            raise ExceptionDuringRun(typ, err, tb.tb_next.tb_next)
-    finally:
-        # Restore the old __main__
-        sys.modules['__main__'] = old_main_mod
-
-        # Restore the old argv and path
-        sys.argv = old_argv
-        sys.path[0] = old_path0