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

third_party/coverage-3.6/coverage/__init__.py

-"""Code coverage measurement for Python.
-
-Ned Batchelder
-http://nedbatchelder.com/code/coverage
-
-"""
-
-from coverage.version import __version__, __url__
-
-from coverage.control import coverage, process_startup
-from coverage.data import CoverageData
-from coverage.cmdline import main, CoverageScript
-from coverage.misc import CoverageException
-
-# Module-level functions.  The original API to this module was based on
-# functions defined directly in the module, with a singleton of the coverage()
-# class.  That design hampered programmability, so the current api uses
-# explicitly-created coverage objects.  But for backward compatibility, here we
-# define the top-level functions to create the singleton when they are first
-# called.
-
-# Singleton object for use with module-level functions.  The singleton is
-# created as needed when one of the module-level functions is called.
-_the_coverage = None
-
-def _singleton_method(name):
-    """Return a function to the `name` method on a singleton `coverage` object.
-
-    The singleton object is created the first time one of these functions is
-    called.
-
-    """
-    # Disable pylint msg W0612, because a bunch of variables look unused, but
-    # they're accessed via locals().
-    # pylint: disable=W0612
-
-    def wrapper(*args, **kwargs):
-        """Singleton wrapper around a coverage method."""
-        global _the_coverage
-        if not _the_coverage:
-            _the_coverage = coverage(auto_data=True)
-        return getattr(_the_coverage, name)(*args, **kwargs)
-
-    import inspect
-    meth = getattr(coverage, name)
-    args, varargs, kw, defaults = inspect.getargspec(meth)
-    argspec = inspect.formatargspec(args[1:], varargs, kw, defaults)
-    docstring = meth.__doc__
-    wrapper.__doc__ = ("""\
-        A first-use-singleton wrapper around coverage.%(name)s.
-
-        This wrapper is provided for backward compatibility with legacy code.
-        New code should use coverage.%(name)s directly.
-
-        %(name)s%(argspec)s:
-
-        %(docstring)s
-        """ % locals()
-        )
-
-    return wrapper
-
-
-# Define the module-level functions.
-use_cache = _singleton_method('use_cache')
-start =     _singleton_method('start')
-stop =      _singleton_method('stop')
-erase =     _singleton_method('erase')
-exclude =   _singleton_method('exclude')
-analysis =  _singleton_method('analysis')
-analysis2 = _singleton_method('analysis2')
-report =    _singleton_method('report')
-annotate =  _singleton_method('annotate')
-
-
-# On Windows, we encode and decode deep enough that something goes wrong and
-# the encodings.utf_8 module is loaded and then unloaded, I don't know why.
-# Adding a reference here prevents it from being unloaded.  Yuk.
-import encodings.utf_8
-
-# Because of the "from coverage.control import fooey" lines at the top of the
-# file, there's an entry for coverage.coverage in sys.modules, mapped to None.
-# This makes some inspection tools (like pydoc) unable to find the class
-# coverage.coverage.  So remove that entry.
-import sys
-try:
-    del sys.modules['coverage.coverage']
-except KeyError:
-    pass
-
-
-# COPYRIGHT AND LICENSE
-#
-# Copyright 2001 Gareth Rees.  All rights reserved.
-# Copyright 2004-2012 Ned Batchelder.  All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-#
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the
-#    distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
-# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
-# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-# DAMAGE.