Python sys.path() Examples

def test_find(self):
        iv = self.intervals
        path = sys.path[:]
        sys.path = sys.path[2:]
        ## import random
        random = __import__("random")
        sys.path = path
        for t in range(25):
            start = random.randint(0, self.max - 10000)
            end  = start + random.randint(100, 10000)

            results = iv.find(start, end)
            for feat in results:
                self.assertTrue(
                        (feat.end >= start and feat.end <= end)
                            or
                        (feat.start <= end and feat.start >= start)
                        ) 

def cachedir(self):
        """Path to workflow's cache directory.

        The cache directory is a subdirectory of Alfred's own cache directory
        in ``~/Library/Caches``. The full path is:

        ``~/Library/Caches/com.runningwithcrayons.Alfred-X/Workflow Data/<bundle id>``

        ``Alfred-X`` may be ``Alfred-2`` or ``Alfred-3``.

        :returns: full path to workflow's cache directory
        :rtype: ``unicode``

        """
        if self.alfred_env.get('workflow_cache'):
            dirpath = self.alfred_env.get('workflow_cache')

        else:
            dirpath = self._default_cachedir

        return self._create(dirpath) 

def cache_data(self, name, data):
        """Save ``data`` to cache under ``name``.

        If ``data`` is ``None``, the corresponding cache file will be
        deleted.

        :param name: name of datastore
        :param data: data to store. This may be any object supported by
                the cache serializer

        """
        serializer = manager.serializer(self.cache_serializer)

        cache_path = self.cachefile('%s.%s' % (name, self.cache_serializer))

        if data is None:
            if os.path.exists(cache_path):
                os.unlink(cache_path)
                self.logger.debug('deleted cache file: %s', cache_path)
            return

        with atomic_writer(cache_path, 'wb') as file_obj:
            serializer.dump(data, file_obj)

        self.logger.debug('cached data: %s', cache_path) 

def _delete_directory_contents(self, dirpath, filter_func):
        """Delete all files in a directory.

        :param dirpath: path to directory to clear
        :type dirpath: ``unicode`` or ``str``
        :param filter_func function to determine whether a file shall be
            deleted or not.
        :type filter_func ``callable``

        """
        if os.path.exists(dirpath):
            for filename in os.listdir(dirpath):
                if not filter_func(filename):
                    continue
                path = os.path.join(dirpath, filename)
                if os.path.isdir(path):
                    shutil.rmtree(path)
                else:
                    os.unlink(path)
                self.logger.debug('deleted : %r', path) 

def test_discover_with_modules_that_fail_to_import(self):
        loader = unittest.TestLoader()

        listdir = os.listdir
        os.listdir = lambda _: ['test_this_does_not_exist.py']
        isfile = os.path.isfile
        os.path.isfile = lambda _: True
        orig_sys_path = sys.path[:]
        def restore():
            os.path.isfile = isfile
            os.listdir = listdir
            sys.path[:] = orig_sys_path
        self.addCleanup(restore)

        suite = loader.discover('.')
        self.assertIn(os.getcwd(), sys.path)
        self.assertEqual(suite.countTestCases(), 1)
        test = list(list(suite)[0])[0] # extract test from suite

        with self.assertRaises(ImportError):
            test.test_this_does_not_exist() 

def _getuserbase():
    env_base = os.environ.get("PYTHONUSERBASE", None)
    def joinuser(*args):
        return os.path.expanduser(os.path.join(*args))

    # what about 'os2emx', 'riscos' ?
    if os.name == "nt":
        base = os.environ.get("APPDATA") or "~"
        return env_base if env_base else joinuser(base, "Python")

    if sys.platform == "darwin":
        framework = get_config_var("PYTHONFRAMEWORK")
        if framework:
            return env_base if env_base else \
                               joinuser("~", "Library", framework, "%d.%d"
                                            % (sys.version_info[:2]))

    return env_base if env_base else joinuser("~", ".local") 

def importfile(path):
    """Import a Python source file or compiled file given its path."""
    magic = imp.get_magic()
    file = open(path, 'r')
    if file.read(len(magic)) == magic:
        kind = imp.PY_COMPILED
    else:
        kind = imp.PY_SOURCE
    file.close()
    filename = os.path.basename(path)
    name, ext = os.path.splitext(filename)
    file = open(path, 'r')
    try:
        module = imp.load_module(name, file, path, (ext, 'r', kind))
    except:
        raise ErrorDuringImport(path, sys.exc_info())
    file.close()
    return module 

def locate(path, forceload=0):
    """Locate an object by name or dotted path, importing as necessary."""
    parts = [part for part in split(path, '.') if part]
    module, n = None, 0
    while n < len(parts):
        nextmodule = safeimport(join(parts[:n+1], '.'), forceload)
        if nextmodule: module, n = nextmodule, n + 1
        else: break
    if module:
        object = module
    else:
        object = __builtin__
    for part in parts[n:]:
        try:
            object = getattr(object, part)
        except AttributeError:
            return None
    return object

# --------------------------------------- interactive interpreter interface 

def __init__(self, directive, name, indent=u''):
        # Monkey path the Method and Function documenters
        sphinx_app.add_autodocumenter(OutlineMethodDocumenter)
        sphinx_app.add_autodocumenter(OutlineFunctionDocumenter)
        autodoc.ModuleDocumenter.__init__(self, directive, name, indent) 

def read(*parts):
    """
    Build an absolute path from *parts* and and return the contents of the
    resulting file.  Assume UTF-8 encoding.
    """
    with codecs.open(os.path.join(HERE, *parts), "rb", "utf-8") as f:
        return f.read() 

def __init__(self, filepath, defaults=None):
        """Create new :class:`Settings` object."""
        super(Settings, self).__init__()
        self._filepath = filepath
        self._nosave = False
        self._original = {}
        if os.path.exists(self._filepath):
            self._load()
        elif defaults:
            for key, val in defaults.items():
                self[key] = val
            self.save()  # save default settings 

def _default_cachedir(self):
        """Alfred 2's default cache directory."""
        return os.path.join(
            os.path.expanduser(
                '~/Library/Caches/com.runningwithcrayons.Alfred-2/'
                'Workflow Data/'),
            self.bundleid) 

def _default_datadir(self):
        """Alfred 2's default data directory."""
        return os.path.join(os.path.expanduser(
            '~/Library/Application Support/Alfred 2/Workflow Data/'),
            self.bundleid) 

def workflowdir(self):
        """Path to workflow's root directory (where ``info.plist`` is).

        :returns: full path to workflow root directory
        :rtype: ``unicode``

        """
        if not self._workflowdir:
            # Try the working directory first, then the directory
            # the library is in. CWD will be the workflow root if
            # a workflow is being run in Alfred
            candidates = [
                os.path.abspath(os.getcwdu()),
                os.path.dirname(os.path.abspath(os.path.dirname(__file__)))]

            # climb the directory tree until we find `info.plist`
            for dirpath in candidates:

                # Ensure directory path is Unicode
                dirpath = self.decode(dirpath)

                while True:
                    if os.path.exists(os.path.join(dirpath, 'info.plist')):
                        self._workflowdir = dirpath
                        break

                    elif dirpath == '/':
                        # no `info.plist` found
                        break

                    # Check the parent directory
                    dirpath = os.path.dirname(dirpath)

                # No need to check other candidates
                if self._workflowdir:
                    break

            if not self._workflowdir:
                raise IOError("'info.plist' not found in directory tree")

        return self._workflowdir 

def cachefile(self, filename):
        """Path to ``filename`` in workflow's cache directory.

        Return absolute path to ``filename`` within your workflow's
        :attr:`cache directory <Workflow.cachedir>`.

        :param filename: basename of file
        :type filename: ``unicode``
        :returns: full path to file within cache directory
        :rtype: ``unicode``

        """
        return os.path.join(self.cachedir, filename) 

def datafile(self, filename):
        """Path to ``filename`` in workflow's data directory.

        Return absolute path to ``filename`` within your workflow's
        :attr:`data directory <Workflow.datadir>`.

        :param filename: basename of file
        :type filename: ``unicode``
        :returns: full path to file within data directory
        :rtype: ``unicode``

        """
        return os.path.join(self.datadir, filename) 

def workflowfile(self, filename):
        """Return full path to ``filename`` in workflow's root directory.

        :param filename: basename of file
        :type filename: ``unicode``
        :returns: full path to file within data directory
        :rtype: ``unicode``

        """
        return os.path.join(self.workflowdir, filename) 

def settings_path(self):
        """Path to settings file within workflow's data directory.

        :returns: path to ``settings.json`` file
        :rtype: ``unicode``

        """
        if not self._settings_path:
            self._settings_path = self.datafile('settings.json')
        return self._settings_path 

def cached_data(self, name, data_func=None, max_age=60):
        """Return cached data if younger than ``max_age`` seconds.

        Retrieve data from cache or re-generate and re-cache data if
        stale/non-existant. If ``max_age`` is 0, return cached data no
        matter how old.

        :param name: name of datastore
        :param data_func: function to (re-)generate data.
        :type data_func: ``callable``
        :param max_age: maximum age of cached data in seconds
        :type max_age: ``int``
        :returns: cached data, return value of ``data_func`` or ``None``
            if ``data_func`` is not set

        """
        serializer = manager.serializer(self.cache_serializer)

        cache_path = self.cachefile('%s.%s' % (name, self.cache_serializer))
        age = self.cached_data_age(name)

        if (age < max_age or max_age == 0) and os.path.exists(cache_path):

            with open(cache_path, 'rb') as file_obj:
                self.logger.debug('loading cached data: %s', cache_path)
                return serializer.load(file_obj)

        if not data_func:
            return None

        data = data_func()
        self.cache_data(name, data)

        return data 

def cached_data_age(self, name):
        """Return age in seconds of cache `name` or 0 if cache doesn't exist.

        :param name: name of datastore
        :type name: ``unicode``
        :returns: age of datastore in seconds
        :rtype: ``int``

        """
        cache_path = self.cachefile('%s.%s' % (name, self.cache_serializer))

        if not os.path.exists(cache_path):
            return 0

        return time.time() - os.stat(cache_path).st_mtime 

def start_update(self):
        """Check for update and download and install new workflow file.

        .. versionadded:: 1.9

        See :ref:`guide-updates` in the :ref:`user-manual` for detailed
        information on how to enable your workflow to update itself.

        :returns: ``True`` if an update is available and will be
            installed, else ``False``

        """
        import update

        github_slug = self._update_settings['github_slug']
        # version = self._update_settings['version']
        version = str(self.version)

        if not update.check_update(github_slug, version, self.prereleases):
            return False

        from background import run_in_background

        # update.py is adjacent to this file
        update_script = os.path.join(os.path.dirname(__file__),
                                     b'update.py')

        cmd = ['/usr/bin/python', update_script, 'install', github_slug,
               version]

        if self.prereleases:
            cmd.append('--prereleases')

        self.logger.debug('downloading update ...')
        run_in_background('__workflow_update_install', cmd)

        return True

    ####################################################################
    # Keychain password storage methods
    #################################################################### 

def clear_settings(self):
        """Delete workflow's :attr:`settings_path`."""
        if os.path.exists(self.settings_path):
            os.unlink(self.settings_path)
            self.logger.debug('deleted : %r', self.settings_path) 

def decode(self, text, encoding=None, normalization=None):
        """Return ``text`` as normalised unicode.

        If ``encoding`` and/or ``normalization`` is ``None``, the
        ``input_encoding``and ``normalization`` parameters passed to
        :class:`Workflow` are used.

        :param text: string
        :type text: encoded or Unicode string. If ``text`` is already a
            Unicode string, it will only be normalised.
        :param encoding: The text encoding to use to decode ``text`` to
            Unicode.
        :type encoding: ``unicode`` or ``None``
        :param normalization: The nomalisation form to apply to ``text``.
        :type normalization: ``unicode`` or ``None``
        :returns: decoded and normalised ``unicode``

        :class:`Workflow` uses "NFC" normalisation by default. This is the
        standard for Python and will work well with data from the web (via
        :mod:`~workflow.web` or :mod:`json`).

        macOS, on the other hand, uses "NFD" normalisation (nearly), so data
        coming from the system (e.g. via :mod:`subprocess` or
        :func:`os.listdir`/:mod:`os.path`) may not match. You should either
        normalise this data, too, or change the default normalisation used by
        :class:`Workflow`.

        """
        encoding = encoding or self._input_encoding
        normalization = normalization or self._normalizsation
        if not isinstance(text, unicode):
            text = unicode(text, encoding)
        return unicodedata.normalize(normalization, text) 

def _create(self, dirpath):
        """Create directory `dirpath` if it doesn't exist.

        :param dirpath: path to directory
        :type dirpath: ``unicode``
        :returns: ``dirpath`` argument
        :rtype: ``unicode``

        """
        if not os.path.exists(dirpath):
            os.makedirs(dirpath)
        return dirpath 

def wrap_module(module, parent=None):
    """Wrap `module` into corresponding module from Pyblish X

    Arguments:
        module (str): Name of module, e.g. "pyblish"

    """

    library_dir = os.path.join(__file__,
                               "..",
                               "..",
                               "lib",
                               "pyblish",
                               "modules",
                               parent or module)
    library_dir = os.path.realpath(library_dir)

    assert os.path.isdir(library_dir), library_dir

    if library_dir not in sys.path:
        sys.path.insert(0, library_dir)

    module = module.replace("-", "_")
    mod = __import__(module)
    sys.modules[module] = mod
    reload(mod) 

def install_dependencies():
    """Add PyQt5 to PYTHONPATH"""
    pyqt_path = os.path.join(repository_dir, "lib", "python-qt5")
    assert os.path.isdir(pyqt_path)

    if pyqt_path not in os.environ.get("PYTHONPATH", ""):
        var = pyqt_path + os.pathsep + os.environ.get("PYTHONPATH", "")
        os.environ["PYTHONPATH"] = var

    if pyqt_path not in sys.path:
        sys.path.insert(0, pyqt_path) 

def install_path():
    """Add Python 2.7 to PATH"""
    python_path = os.path.join(repository_dir, "lib", "Python27")
    assert os.path.isdir(python_path)
    if python_path not in os.environ.get("PATH", ""):
        var = python_path + os.pathsep + os.environ.get("PATH", "")
        os.environ["PATH"] = var 

def __load(self, event=None):
        while 1:
            idir, ifile = os.path.split(self.__sb.colordb().filename())
            file = tkFileDialog.askopenfilename(
                filetypes=[('Text files', '*.txt'),
                           ('All files', '*'),
                           ],
                initialdir=idir,
                initialfile=ifile)
            if not file:
                # cancel button
                return
            try:
                colordb = ColorDB.get_colordb(file)
            except IOError:
                tkMessageBox.showerror('Read error', '''\
Could not open file for reading:
%s''' % file)
                continue
            if colordb is None:
                tkMessageBox.showerror('Unrecognized color file type', '''\
Unrecognized color file type in file:
%s''' % file)
                continue
            break
        self.__sb.set_colordb(colordb) 

def __init__(self, master, quitfunc):
        from Main import docstring
        self.__root = root = Toplevel(master, class_='Pynche')
        root.protocol('WM_DELETE_WINDOW', self.__withdraw)
        root.title('Pynche Help Window')
        root.iconname('Pynche Help Window')
        root.bind('<Alt-q>', quitfunc)
        root.bind('<Alt-Q>', quitfunc)
        root.bind('<Alt-w>', self.__withdraw)
        root.bind('<Alt-W>', self.__withdraw)

        # more elaborate help is available in the README file
        readmefile = os.path.join(sys.path[0], 'README')
        try:
            fp = None
            try:
                fp = open(readmefile)
                contents = fp.read()
                # wax the last page, it contains Emacs cruft
                i = contents.rfind('\f')
                if i > 0:
                    contents = contents[:i].rstrip()
            finally:
                if fp:
                    fp.close()
        except IOError:
            sys.stderr.write("Couldn't open Pynche's README, "
                             'using docstring instead.\n')
            contents = docstring()

        self.__text = text = Text(root, relief=SUNKEN,
                                  width=80, height=24)
        self.__text.focus_set()
        text.insert(0.0, contents)
        scrollbar = Scrollbar(root)
        scrollbar.pack(fill=Y, side=RIGHT)
        text.pack(fill=BOTH, expand=YES)
        text.configure(yscrollcommand=(scrollbar, 'set'))
        scrollbar.configure(command=(text, 'yview')) 

def _get_directory_containing_module(self, module_name):
        module = sys.modules[module_name]
        full_path = os.path.abspath(module.__file__)

        if os.path.basename(full_path).lower().startswith('__init__.py'):
            return os.path.dirname(os.path.dirname(full_path))
        else:
            # here we have been given a module rather than a package - so
            # all we can do is search the *same* directory the module is in
            # should an exception be raised instead
            return os.path.dirname(full_path) 

def _get_name_from_path(self, path):
        path = os.path.splitext(os.path.normpath(path))[0]

        _relpath = os.path.relpath(path, self._top_level_dir)
        assert not os.path.isabs(_relpath), "Path must be within the project"
        assert not _relpath.startswith('..'), "Path must be within the project"

        name = _relpath.replace(os.path.sep, '.')
        return name 

def _match_path(self, path, full_path, pattern):
        # override this method to use alternative matching strategy
        return fnmatch(path, pattern) 

def setup_module_clash(self):
        class Module(object):
            __file__ = 'bar/foo.py'
        sys.modules['foo'] = Module
        full_path = os.path.abspath('foo')
        original_listdir = os.listdir
        original_isfile = os.path.isfile
        original_isdir = os.path.isdir

        def cleanup():
            os.listdir = original_listdir
            os.path.isfile = original_isfile
            os.path.isdir = original_isdir
            del sys.modules['foo']
            if full_path in sys.path:
                sys.path.remove(full_path)
        self.addCleanup(cleanup)

        def listdir(_):
            return ['foo.py']
        def isfile(_):
            return True
        def isdir(_):
            return True
        os.listdir = listdir
        os.path.isfile = isfile
        os.path.isdir = isdir
        return full_path 

def test_detect_module_clash(self):
        full_path = self.setup_module_clash()
        loader = unittest.TestLoader()

        mod_dir = os.path.abspath('bar')
        expected_dir = os.path.abspath('foo')
        msg = re.escape(r"'foo' module incorrectly imported from %r. Expected %r. "
                "Is this module globally installed?" % (mod_dir, expected_dir))
        self.assertRaisesRegexp(
            ImportError, '^%s$' % msg, loader.discover,
            start_dir='foo', pattern='foo.py'
        )
        self.assertEqual(sys.path[0], full_path) 

def test_discovery_from_dotted_path(self):
        loader = unittest.TestLoader()

        tests = [self]
        expectedPath = os.path.abspath(os.path.dirname(unittest.test.__file__))

        self.wasRun = False
        def _find_tests(start_dir, pattern):
            self.wasRun = True
            self.assertEqual(start_dir, expectedPath)
            return tests
        loader._find_tests = _find_tests
        suite = loader.discover('unittest.test')
        self.assertTrue(self.wasRun)
        self.assertEqual(suite._tests, tests) 

def testImport(self):
        # 'import' dotted_as_names
        import sys
        import time, sys
        # 'from' dotted_name 'import' ('*' | '(' import_as_names ')' | import_as_names)
        from time import time
        from time import (time)
        # not testable inside a function, but already done at top of the module
        # from sys import *
        from sys import path, argv
        from sys import (path, argv)
        from sys import (path, argv,) 

def testSelectors(self):
        ### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
        ### subscript: expr | [expr] ':' [expr]

        import sys, time
        c = sys.path[0]
        x = time.time()
        x = sys.modules['time'].time()
        a = '01234'
        c = a[0]
        c = a[-1]
        s = a[0:5]
        s = a[:5]
        s = a[0:]
        s = a[:]
        s = a[-5:]
        s = a[:-1]
        s = a[-4:-3]
        # A rough test of SF bug 1333982.  http://python.org/sf/1333982
        # The testing here is fairly incomplete.
        # Test cases should include: commas with 1 and 2 colons
        d = {}
        d[1] = 1
        d[1,] = 2
        d[1,2] = 3
        d[1,2,3] = 4
        L = list(d)
        L.sort(key=lambda x: x if isinstance(x, tuple) else ())
        self.assertEquals(str(L), '[1, (1,), (1, 2), (1, 2, 3)]') 

def testImport(self):
        # 'import' dotted_as_names
        import sys
        import time, sys
        # 'from' dotted_name 'import' ('*' | '(' import_as_names ')' | import_as_names)
        from time import time
        from time import (time)
        # not testable inside a function, but already done at top of the module
        # from sys import *
        from sys import path, argv
        from sys import (path, argv)
        from sys import (path, argv,) 

def testSelectors(self):
        ### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
        ### subscript: expr | [expr] ':' [expr]

        import sys, time
        c = sys.path[0]
        x = time.time()
        x = sys.modules['time'].time()
        a = '01234'
        c = a[0]
        c = a[-1]
        s = a[0:5]
        s = a[:5]
        s = a[0:]
        s = a[:]
        s = a[-5:]
        s = a[:-1]
        s = a[-4:-3]
        # A rough test of SF bug 1333982.  http://python.org/sf/1333982
        # The testing here is fairly incomplete.
        # Test cases should include: commas with 1 and 2 colons
        d = {}
        d[1] = 1
        d[1,] = 2
        d[1,2] = 3
        d[1,2,3] = 4
        L = list(d)
        L.sort()
        self.assertEquals(str(L), '[1, (1,), (1, 2), (1, 2, 3)]') 

def __init__(self, modules = None, dirs = None):
        self._mods = modules or []
        self._dirs = dirs or []

        self._dirs = map(os.path.normpath, self._dirs)
        self._ignore = { '<string>': 1 } 

def modname(path):
    """Return a plausible module name for the patch."""

    base = os.path.basename(path)
    filename, ext = os.path.splitext(base)
    return filename 

def fullmodname(path):
    """Return a plausible module name for the path."""

    # If the file 'path' is part of a package, then the filename isn't
    # enough to uniquely identify it.  Try to do the right thing by
    # looking in sys.path for the longest matching prefix.  We'll
    # assume that the rest is the package name.

    comparepath = os.path.normcase(path)
    longest = ""
    for dir in sys.path:
        dir = os.path.normcase(dir)
        if comparepath.startswith(dir) and comparepath[len(dir)] == os.sep:
            if len(dir) > len(longest):
                longest = dir

    if longest:
        base = path[len(longest) + 1:]
    else:
        base = path
    # the drive letter is never part of the module name
    drive, base = os.path.splitdrive(base)
    base = base.replace(os.sep, ".")
    if os.altsep:
        base = base.replace(os.altsep, ".")
    filename, ext = os.path.splitext(base)
    return filename.lstrip(".") 

def write_results_file(self, path, lines, lnotab, lines_hit):
        """Return a coverage results file in path."""

        try:
            outfile = open(path, "w")
        except IOError, err:
            print >> sys.stderr, ("trace: Could not open %r for writing: %s"
                                  "- skipping" % (path, err))
            return 0, 0 

def localtrace_trace(self, frame, why, arg):
        if why == "line":
            # record the file name and line number of every trace
            filename = frame.f_code.co_filename
            lineno = frame.f_lineno

            if self.start_time:
                print '%.2f' % (time.time() - self.start_time),
            bname = os.path.basename(filename)
            print "%s(%d): %s" % (bname, lineno,
                                  linecache.getline(filename, lineno)),
        return self.localtrace 

def AddPackagePath(packagename, path):
    paths = packagePathMap.get(packagename, [])
    paths.append(path)
    packagePathMap[packagename] = paths 

def __init__(self, name, file=None, path=None):
        self.__name__ = name
        self.__file__ = file
        self.__path__ = path
        self.__code__ = None
        # The set of global names that are assigned to in the module.
        # This includes those names imported through starimports of
        # Python modules.
        self.globalnames = {}
        # The set of starimports this module did that could not be
        # resolved, ie. a starimport from a non-Python module.
        self.starimports = {} 

def __init__(self, path=None, debug=0, excludes=[], replace_paths=[]):
        if path is None:
            path = sys.path
        self.path = path
        self.modules = {}
        self.badmodules = {}
        self.debug = debug
        self.indent = 0
        self.excludes = excludes
        self.replace_paths = replace_paths
        self.processed_paths = []   # Used in debugging only 

def load_file(self, pathname):
        dir, name = os.path.split(pathname)
        name, ext = os.path.splitext(name)
        fp = open(pathname, READ_MODE)
        stuff = (ext, "r", imp.PY_SOURCE)
        self.load_module(name, fp, pathname, stuff) 

def replace_paths_in_code(self, co):
        new_filename = original_filename = os.path.normpath(co.co_filename)
        for f, r in self.replace_paths:
            if original_filename.startswith(f):
                new_filename = r + original_filename[len(f):]
                break

        if self.debug and original_filename not in self.processed_paths:
            if new_filename != original_filename:
                self.msgout(2, "co_filename %r changed to %r" \
                                    % (original_filename,new_filename,))
            else:
                self.msgout(2, "co_filename %r remains unchanged" \
                                    % (original_filename,))
            self.processed_paths.append(original_filename)

        consts = list(co.co_consts)
        for i in range(len(consts)):
            if isinstance(consts[i], type(co)):
                consts[i] = self.replace_paths_in_code(consts[i])

        return types.CodeType(co.co_argcount, co.co_nlocals, co.co_stacksize,
                         co.co_flags, co.co_code, tuple(consts), co.co_names,
                         co.co_varnames, new_filename, co.co_name,
                         co.co_firstlineno, co.co_lnotab,
                         co.co_freevars, co.co_cellvars) 

def _safe_realpath(path):
    try:
        return realpath(path)
    except OSError:
        return path