add zsh h()

venv/lib/python2.7/site.py

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+"""Append module search paths for third-party packages to sys.path.
+
+****************************************************************
+* This module is automatically imported during initialization. *
+****************************************************************
+
+In earlier versions of Python (up to 1.5a3), scripts or modules that
+needed to use site-specific modules would place ``import site''
+somewhere near the top of their code.  Because of the automatic
+import, this is no longer necessary (but code that does it still
+works).
+
+This will append site-specific paths to the module search path.  On
+Unix, it starts with sys.prefix and sys.exec_prefix (if different) and
+appends lib/python<version>/site-packages as well as lib/site-python.
+It also supports the Debian convention of
+lib/python<version>/dist-packages.  On other platforms (mainly Mac and
+Windows), it uses just sys.prefix (and sys.exec_prefix, if different,
+but this is unlikely).  The resulting directories, if they exist, are
+appended to sys.path, and also inspected for path configuration files.
+
+FOR DEBIAN, this sys.path is augmented with directories in /usr/local.
+Local addons go into /usr/local/lib/python<version>/site-packages
+(resp. /usr/local/lib/site-python), Debian addons install into
+/usr/{lib,share}/python<version>/dist-packages.
+
+A path configuration file is a file whose name has the form
+<package>.pth; its contents are additional directories (one per line)
+to be added to sys.path.  Non-existing directories (or
+non-directories) are never added to sys.path; no directory is added to
+sys.path more than once.  Blank lines and lines beginning with
+'#' are skipped. Lines starting with 'import' are executed.
+
+For example, suppose sys.prefix and sys.exec_prefix are set to
+/usr/local and there is a directory /usr/local/lib/python2.X/site-packages
+with three subdirectories, foo, bar and spam, and two path
+configuration files, foo.pth and bar.pth.  Assume foo.pth contains the
+following:
+
+  # foo package configuration
+  foo
+  bar
+  bletch
+
+and bar.pth contains:
+
+  # bar package configuration
+  bar
+
+Then the following directories are added to sys.path, in this order:
+
+  /usr/local/lib/python2.X/site-packages/bar
+  /usr/local/lib/python2.X/site-packages/foo
+
+Note that bletch is omitted because it doesn't exist; bar precedes foo
+because bar.pth comes alphabetically before foo.pth; and spam is
+omitted because it is not mentioned in either path configuration file.
+
+After these path manipulations, an attempt is made to import a module
+named sitecustomize, which can perform arbitrary additional
+site-specific customizations.  If this import fails with an
+ImportError exception, it is silently ignored.
+
+"""
+
+import os
+import sys
+
+try:
+    import __builtin__ as builtins
+except ImportError:
+    import builtins
+try:
+    set
+except NameError:
+    from sets import Set as set
+
+# Prefixes for site-packages; add additional prefixes like /usr/local here
+PREFIXES = [sys.prefix, sys.exec_prefix]
+# Enable per user site-packages directory
+# set it to False to disable the feature or True to force the feature
+ENABLE_USER_SITE = None
+# for distutils.commands.install
+USER_SITE = None
+USER_BASE = None
+
+_is_64bit = (getattr(sys, "maxsize", None) or getattr(sys, "maxint")) > 2 ** 32
+_is_pypy = hasattr(sys, "pypy_version_info")
+_is_jython = sys.platform[:4] == "java"
+if _is_jython:
+    ModuleType = type(os)
+
+
+def makepath(*paths):
+    dir = os.path.join(*paths)
+    if _is_jython and (dir == "__classpath__" or dir.startswith("__pyclasspath__")):
+        return dir, dir
+    dir = os.path.abspath(dir)
+    return dir, os.path.normcase(dir)
+
+
+def abs__file__():
+    """Set all module' __file__ attribute to an absolute path"""
+    for m in sys.modules.values():
+        if (_is_jython and not isinstance(m, ModuleType)) or hasattr(m, "__loader__"):
+            # only modules need the abspath in Jython. and don't mess
+            # with a PEP 302-supplied __file__
+            continue
+        f = getattr(m, "__file__", None)
+        if f is None:
+            continue
+        m.__file__ = os.path.abspath(f)
+
+
+def removeduppaths():
+    """ Remove duplicate entries from sys.path along with making them
+    absolute"""
+    # This ensures that the initial path provided by the interpreter contains
+    # only absolute pathnames, even if we're running from the build directory.
+    L = []
+    known_paths = set()
+    for dir in sys.path:
+        # Filter out duplicate paths (on case-insensitive file systems also
+        # if they only differ in case); turn relative paths into absolute
+        # paths.
+        dir, dircase = makepath(dir)
+        if not dircase in known_paths:
+            L.append(dir)
+            known_paths.add(dircase)
+    sys.path[:] = L
+    return known_paths
+
+
+# XXX This should not be part of site.py, since it is needed even when
+# using the -S option for Python.  See http://www.python.org/sf/586680
+def addbuilddir():
+    """Append ./build/lib.<platform> in case we're running in the build dir
+    (especially for Guido :-)"""
+    from distutils.util import get_platform
+
+    s = "build/lib.{}-{:.3}".format(get_platform(), sys.version)
+    if hasattr(sys, "gettotalrefcount"):
+        s += "-pydebug"
+    s = os.path.join(os.path.dirname(sys.path[-1]), s)
+    sys.path.append(s)
+
+
+def _init_pathinfo():
+    """Return a set containing all existing directory entries from sys.path"""
+    d = set()
+    for dir in sys.path:
+        try:
+            if os.path.isdir(dir):
+                dir, dircase = makepath(dir)
+                d.add(dircase)
+        except TypeError:
+            continue
+    return d
+
+
+def addpackage(sitedir, name, known_paths):
+    """Add a new path to known_paths by combining sitedir and 'name' or execute
+    sitedir if it starts with 'import'"""
+    if known_paths is None:
+        _init_pathinfo()
+        reset = 1
+    else:
+        reset = 0
+    fullname = os.path.join(sitedir, name)
+    try:
+        f = open(fullname, "r")
+    except IOError:
+        return
+    try:
+        for line in f:
+            if line.startswith("#"):
+                continue
+            if line.startswith("import"):
+                exec(line)
+                continue
+            line = line.rstrip()
+            dir, dircase = makepath(sitedir, line)
+            if not dircase in known_paths and os.path.exists(dir):
+                sys.path.append(dir)
+                known_paths.add(dircase)
+    finally:
+        f.close()
+    if reset:
+        known_paths = None
+    return known_paths
+
+
+def addsitedir(sitedir, known_paths=None):
+    """Add 'sitedir' argument to sys.path if missing and handle .pth files in
+    'sitedir'"""
+    if known_paths is None:
+        known_paths = _init_pathinfo()
+        reset = 1
+    else:
+        reset = 0
+    sitedir, sitedircase = makepath(sitedir)
+    if not sitedircase in known_paths:
+        sys.path.append(sitedir)  # Add path component
+    try:
+        names = os.listdir(sitedir)
+    except os.error:
+        return
+    names.sort()
+    for name in names:
+        if name.endswith(os.extsep + "pth"):
+            addpackage(sitedir, name, known_paths)
+    if reset:
+        known_paths = None
+    return known_paths
+
+
+def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_prefix):
+    """Add site-packages (and possibly site-python) to sys.path"""
+    prefixes = [os.path.join(sys_prefix, "local"), sys_prefix]
+    if exec_prefix != sys_prefix:
+        prefixes.append(os.path.join(exec_prefix, "local"))
+
+    for prefix in prefixes:
+        if prefix:
+            if sys.platform in ("os2emx", "riscos") or _is_jython:
+                sitedirs = [os.path.join(prefix, "Lib", "site-packages")]
+            elif _is_pypy:
+                sitedirs = [os.path.join(prefix, "site-packages")]
+            elif sys.platform == "darwin" and prefix == sys_prefix:
+
+                if prefix.startswith("/System/Library/Frameworks/"):  # Apple's Python
+
+                    sitedirs = [
+                        os.path.join("/Library/Python", sys.version[:3], "site-packages"),
+                        os.path.join(prefix, "Extras", "lib", "python"),
+                    ]
+
+                else:  # any other Python distros on OSX work this way
+                    sitedirs = [os.path.join(prefix, "lib", "python" + sys.version[:3], "site-packages")]
+
+            elif os.sep == "/":
+                sitedirs = [
+                    os.path.join(prefix, "lib", "python" + sys.version[:3], "site-packages"),
+                    os.path.join(prefix, "lib", "site-python"),
+                    os.path.join(prefix, "python" + sys.version[:3], "lib-dynload"),
+                ]
+                lib64_dir = os.path.join(prefix, "lib64", "python" + sys.version[:3], "site-packages")
+                if os.path.exists(lib64_dir) and os.path.realpath(lib64_dir) not in [
+                    os.path.realpath(p) for p in sitedirs
+                ]:
+                    if _is_64bit:
+                        sitedirs.insert(0, lib64_dir)
+                    else:
+                        sitedirs.append(lib64_dir)
+                try:
+                    # sys.getobjects only available in --with-pydebug build
+                    sys.getobjects
+                    sitedirs.insert(0, os.path.join(sitedirs[0], "debug"))
+                except AttributeError:
+                    pass
+                # Debian-specific dist-packages directories:
+                sitedirs.append(os.path.join(prefix, "local/lib", "python" + sys.version[:3], "dist-packages"))
+                if sys.version[0] == "2":
+                    sitedirs.append(os.path.join(prefix, "lib", "python" + sys.version[:3], "dist-packages"))
+                else:
+                    sitedirs.append(os.path.join(prefix, "lib", "python" + sys.version[0], "dist-packages"))
+                sitedirs.append(os.path.join(prefix, "lib", "dist-python"))
+            else:
+                sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")]
+            if sys.platform == "darwin":
+                # for framework builds *only* we add the standard Apple
+                # locations. Currently only per-user, but /Library and
+                # /Network/Library could be added too
+                if "Python.framework" in prefix:
+                    home = os.environ.get("HOME")
+                    if home:
+                        sitedirs.append(os.path.join(home, "Library", "Python", sys.version[:3], "site-packages"))
+            for sitedir in sitedirs:
+                if os.path.isdir(sitedir):
+                    addsitedir(sitedir, known_paths)
+    return None
+
+
+def check_enableusersite():
+    """Check if user site directory is safe for inclusion
+
+    The function tests for the command line flag (including environment var),
+    process uid/gid equal to effective uid/gid.
+
+    None: Disabled for security reasons
+    False: Disabled by user (command line option)
+    True: Safe and enabled
+    """
+    if hasattr(sys, "flags") and getattr(sys.flags, "no_user_site", False):
+        return False
+
+    if hasattr(os, "getuid") and hasattr(os, "geteuid"):
+        # check process uid == effective uid
+        if os.geteuid() != os.getuid():
+            return None
+    if hasattr(os, "getgid") and hasattr(os, "getegid"):
+        # check process gid == effective gid
+        if os.getegid() != os.getgid():
+            return None
+
+    return True
+
+
+def addusersitepackages(known_paths):
+    """Add a per user site-package to sys.path
+
+    Each user has its own python directory with site-packages in the
+    home directory.
+
+    USER_BASE is the root directory for all Python versions
+
+    USER_SITE is the user specific site-packages directory
+
+    USER_SITE/.. can be used for data.
+    """
+    global USER_BASE, USER_SITE, ENABLE_USER_SITE
+    env_base = os.environ.get("PYTHONUSERBASE", None)
+
+    def joinuser(*args):
+        return os.path.expanduser(os.path.join(*args))
+
+    # if sys.platform in ('os2emx', 'riscos'):
+    #    # Don't know what to put here
+    #    USER_BASE = ''
+    #    USER_SITE = ''
+    if os.name == "nt":
+        base = os.environ.get("APPDATA") or "~"
+        if env_base:
+            USER_BASE = env_base
+        else:
+            USER_BASE = joinuser(base, "Python")
+        USER_SITE = os.path.join(USER_BASE, "Python" + sys.version[0] + sys.version[2], "site-packages")
+    else:
+        if env_base:
+            USER_BASE = env_base
+        else:
+            USER_BASE = joinuser("~", ".local")
+        USER_SITE = os.path.join(USER_BASE, "lib", "python" + sys.version[:3], "site-packages")
+
+    if ENABLE_USER_SITE and os.path.isdir(USER_SITE):
+        addsitedir(USER_SITE, known_paths)
+    if ENABLE_USER_SITE:
+        for dist_libdir in ("lib", "local/lib"):
+            user_site = os.path.join(USER_BASE, dist_libdir, "python" + sys.version[:3], "dist-packages")
+            if os.path.isdir(user_site):
+                addsitedir(user_site, known_paths)
+    return known_paths
+
+
+def setBEGINLIBPATH():
+    """The OS/2 EMX port has optional extension modules that do double duty
+    as DLLs (and must use the .DLL file extension) for other extensions.
+    The library search path needs to be amended so these will be found
+    during module import.  Use BEGINLIBPATH so that these are at the start
+    of the library search path.
+
+    """
+    dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
+    libpath = os.environ["BEGINLIBPATH"].split(";")
+    if libpath[-1]:
+        libpath.append(dllpath)
+    else:
+        libpath[-1] = dllpath
+    os.environ["BEGINLIBPATH"] = ";".join(libpath)
+
+
+def setquit():
+    """Define new built-ins 'quit' and 'exit'.
+    These are simply strings that display a hint on how to exit.
+
+    """
+    if os.sep == ":":
+        eof = "Cmd-Q"
+    elif os.sep == "\\":
+        eof = "Ctrl-Z plus Return"
+    else:
+        eof = "Ctrl-D (i.e. EOF)"
+
+    class Quitter(object):
+        def __init__(self, name):
+            self.name = name
+
+        def __repr__(self):
+            return "Use {}() or {} to exit".format(self.name, eof)
+
+        def __call__(self, code=None):
+            # Shells like IDLE catch the SystemExit, but listen when their
+            # stdin wrapper is closed.
+            try:
+                sys.stdin.close()
+            except:
+                pass
+            raise SystemExit(code)
+
+    builtins.quit = Quitter("quit")
+    builtins.exit = Quitter("exit")
+
+
+class _Printer(object):
+    """interactive prompt objects for printing the license text, a list of
+    contributors and the copyright notice."""
+
+    MAXLINES = 23
+
+    def __init__(self, name, data, files=(), dirs=()):
+        self.__name = name
+        self.__data = data
+        self.__files = files
+        self.__dirs = dirs
+        self.__lines = None
+
+    def __setup(self):
+        if self.__lines:
+            return
+        data = None
+        for dir in self.__dirs:
+            for filename in self.__files:
+                filename = os.path.join(dir, filename)
+                try:
+                    fp = open(filename, "r")
+                    data = fp.read()
+                    fp.close()
+                    break
+                except IOError:
+                    pass
+            if data:
+                break
+        if not data:
+            data = self.__data
+        self.__lines = data.split("\n")
+        self.__linecnt = len(self.__lines)
+
+    def __repr__(self):
+        self.__setup()
+        if len(self.__lines) <= self.MAXLINES:
+            return "\n".join(self.__lines)
+        else:
+            return "Type %s() to see the full %s text" % ((self.__name,) * 2)
+
+    def __call__(self):
+        self.__setup()
+        prompt = "Hit Return for more, or q (and Return) to quit: "
+        lineno = 0
+        while 1:
+            try:
+                for i in range(lineno, lineno + self.MAXLINES):
+                    print(self.__lines[i])
+            except IndexError:
+                break
+            else:
+                lineno += self.MAXLINES
+                key = None
+                while key is None:
+                    try:
+                        key = raw_input(prompt)
+                    except NameError:
+                        key = input(prompt)
+                    if key not in ("", "q"):
+                        key = None
+                if key == "q":
+                    break
+
+
+def setcopyright():
+    """Set 'copyright' and 'credits' in __builtin__"""
+    builtins.copyright = _Printer("copyright", sys.copyright)
+    if _is_jython:
+        builtins.credits = _Printer("credits", "Jython is maintained by the Jython developers (www.jython.org).")
+    elif _is_pypy:
+        builtins.credits = _Printer("credits", "PyPy is maintained by the PyPy developers: http://pypy.org/")
+    else:
+        builtins.credits = _Printer(
+            "credits",
+            """\
+    Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
+    for supporting Python development.  See www.python.org for more information.""",
+        )
+    here = os.path.dirname(os.__file__)
+    builtins.license = _Printer(
+        "license",
+        "See https://www.python.org/psf/license/",
+        ["LICENSE.txt", "LICENSE"],
+        [os.path.join(here, os.pardir), here, os.curdir],
+    )
+
+
+class _Helper(object):
+    """Define the built-in 'help'.
+    This is a wrapper around pydoc.help (with a twist).
+
+    """
+
+    def __repr__(self):
+        return "Type help() for interactive help, " "or help(object) for help about object."
+
+    def __call__(self, *args, **kwds):
+        import pydoc
+
+        return pydoc.help(*args, **kwds)
+
+
+def sethelper():
+    builtins.help = _Helper()
+
+
+def aliasmbcs():
+    """On Windows, some default encodings are not provided by Python,
+    while they are always available as "mbcs" in each locale. Make
+    them usable by aliasing to "mbcs" in such a case."""
+    if sys.platform == "win32":
+        import locale, codecs
+
+        enc = locale.getdefaultlocale()[1]
+        if enc.startswith("cp"):  # "cp***" ?
+            try:
+                codecs.lookup(enc)
+            except LookupError:
+                import encodings
+
+                encodings._cache[enc] = encodings._unknown
+                encodings.aliases.aliases[enc] = "mbcs"
+
+
+def setencoding():
+    """Set the string encoding used by the Unicode implementation.  The
+    default is 'ascii', but if you're willing to experiment, you can
+    change this."""
+    encoding = "ascii"  # Default value set by _PyUnicode_Init()
+    if 0:
+        # Enable to support locale aware default string encodings.
+        import locale
+
+        loc = locale.getdefaultlocale()
+        if loc[1]:
+            encoding = loc[1]
+    if 0:
+        # Enable to switch off string to Unicode coercion and implicit
+        # Unicode to string conversion.
+        encoding = "undefined"
+    if encoding != "ascii":
+        # On Non-Unicode builds this will raise an AttributeError...
+        sys.setdefaultencoding(encoding)  # Needs Python Unicode build !
+
+
+def execsitecustomize():
+    """Run custom site specific code, if available."""
+    try:
+        import sitecustomize
+    except ImportError:
+        pass
+
+
+def virtual_install_main_packages():
+    f = open(os.path.join(os.path.dirname(__file__), "orig-prefix.txt"))
+    sys.real_prefix = f.read().strip()
+    f.close()
+    pos = 2
+    hardcoded_relative_dirs = []
+    if sys.path[0] == "":
+        pos += 1
+    if _is_jython:
+        paths = [os.path.join(sys.real_prefix, "Lib")]
+    elif _is_pypy:
+        if sys.version_info > (3, 2):
+            cpyver = "%d" % sys.version_info[0]
+        elif sys.pypy_version_info >= (1, 5):
+            cpyver = "%d.%d" % sys.version_info[:2]
+        else:
+            cpyver = "%d.%d.%d" % sys.version_info[:3]
+        paths = [os.path.join(sys.real_prefix, "lib_pypy"), os.path.join(sys.real_prefix, "lib-python", cpyver)]
+        if sys.pypy_version_info < (1, 9):
+            paths.insert(1, os.path.join(sys.real_prefix, "lib-python", "modified-%s" % cpyver))
+        hardcoded_relative_dirs = paths[:]  # for the special 'darwin' case below
+        #
+        # This is hardcoded in the Python executable, but relative to sys.prefix:
+        for path in paths[:]:
+            plat_path = os.path.join(path, "plat-%s" % sys.platform)
+            if os.path.exists(plat_path):
+                paths.append(plat_path)
+    elif sys.platform == "win32":
+        paths = [os.path.join(sys.real_prefix, "Lib"), os.path.join(sys.real_prefix, "DLLs")]
+    else:
+        paths = [os.path.join(sys.real_prefix, "lib", "python" + sys.version[:3])]
+        hardcoded_relative_dirs = paths[:]  # for the special 'darwin' case below
+        lib64_path = os.path.join(sys.real_prefix, "lib64", "python" + sys.version[:3])
+        if os.path.exists(lib64_path):
+            if _is_64bit:
+                paths.insert(0, lib64_path)
+            else:
+                paths.append(lib64_path)
+        # This is hardcoded in the Python executable, but relative to
+        # sys.prefix.  Debian change: we need to add the multiarch triplet
+        # here, which is where the real stuff lives.  As per PEP 421, in
+        # Python 3.3+, this lives in sys.implementation, while in Python 2.7
+        # it lives in sys.
+        try:
+            arch = getattr(sys, "implementation", sys)._multiarch
+        except AttributeError:
+            # This is a non-multiarch aware Python.  Fallback to the old way.
+            arch = sys.platform
+        plat_path = os.path.join(sys.real_prefix, "lib", "python" + sys.version[:3], "plat-%s" % arch)
+        if os.path.exists(plat_path):
+            paths.append(plat_path)
+    # This is hardcoded in the Python executable, but
+    # relative to sys.prefix, so we have to fix up:
+    for path in list(paths):
+        tk_dir = os.path.join(path, "lib-tk")
+        if os.path.exists(tk_dir):
+            paths.append(tk_dir)
+
+    # These are hardcoded in the Apple's Python executable,
+    # but relative to sys.prefix, so we have to fix them up:
+    if sys.platform == "darwin":
+        hardcoded_paths = [
+            os.path.join(relative_dir, module)
+            for relative_dir in hardcoded_relative_dirs
+            for module in ("plat-darwin", "plat-mac", "plat-mac/lib-scriptpackages")
+        ]
+
+        for path in hardcoded_paths:
+            if os.path.exists(path):
+                paths.append(path)
+
+    sys.path.extend(paths)
+
+
+def force_global_eggs_after_local_site_packages():
+    """
+    Force easy_installed eggs in the global environment to get placed
+    in sys.path after all packages inside the virtualenv.  This
+    maintains the "least surprise" result that packages in the
+    virtualenv always mask global packages, never the other way
+    around.
+
+    """
+    egginsert = getattr(sys, "__egginsert", 0)
+    for i, path in enumerate(sys.path):
+        if i > egginsert and path.startswith(sys.prefix):
+            egginsert = i
+    sys.__egginsert = egginsert + 1
+
+
+def virtual_addsitepackages(known_paths):
+    force_global_eggs_after_local_site_packages()
+    return addsitepackages(known_paths, sys_prefix=sys.real_prefix)
+
+
+def fixclasspath():
+    """Adjust the special classpath sys.path entries for Jython. These
+    entries should follow the base virtualenv lib directories.
+    """
+    paths = []
+    classpaths = []
+    for path in sys.path:
+        if path == "__classpath__" or path.startswith("__pyclasspath__"):
+            classpaths.append(path)
+        else:
+            paths.append(path)
+    sys.path = paths
+    sys.path.extend(classpaths)
+
+
+def execusercustomize():
+    """Run custom user specific code, if available."""
+    try:
+        import usercustomize
+    except ImportError:
+        pass
+
+
+def enablerlcompleter():
+    """Enable default readline configuration on interactive prompts, by
+    registering a sys.__interactivehook__.
+    If the readline module can be imported, the hook will set the Tab key
+    as completion key and register ~/.python_history as history file.
+    This can be overridden in the sitecustomize or usercustomize module,
+    or in a PYTHONSTARTUP file.
+    """
+
+    def register_readline():
+        import atexit
+
+        try:
+            import readline
+            import rlcompleter
+        except ImportError:
+            return
+
+        # Reading the initialization (config) file may not be enough to set a
+        # completion key, so we set one first and then read the file.
+        readline_doc = getattr(readline, "__doc__", "")
+        if readline_doc is not None and "libedit" in readline_doc:
+            readline.parse_and_bind("bind ^I rl_complete")
+        else:
+            readline.parse_and_bind("tab: complete")
+
+        try:
+            readline.read_init_file()
+        except OSError:
+            # An OSError here could have many causes, but the most likely one
+            # is that there's no .inputrc file (or .editrc file in the case of
+            # Mac OS X + libedit) in the expected location.  In that case, we
+            # want to ignore the exception.
+            pass
+
+        if readline.get_current_history_length() == 0:
+            # If no history was loaded, default to .python_history.
+            # The guard is necessary to avoid doubling history size at
+            # each interpreter exit when readline was already configured
+            # through a PYTHONSTARTUP hook, see:
+            # http://bugs.python.org/issue5845#msg198636
+            history = os.path.join(os.path.expanduser("~"), ".python_history")
+            try:
+                readline.read_history_file(history)
+            except OSError:
+                pass
+
+            def write_history():
+                try:
+                    readline.write_history_file(history)
+                except (FileNotFoundError, PermissionError):
+                    # home directory does not exist or is not writable
+                    # https://bugs.python.org/issue19891
+                    pass
+
+            atexit.register(write_history)
+
+    sys.__interactivehook__ = register_readline
+
+
+if _is_pypy:
+
+    def import_builtin_stuff():
+        """PyPy specific: some built-in modules should be pre-imported because
+        some programs expect them to be in sys.modules on startup. This is ported
+        from PyPy's site.py.
+        """
+        import encodings
+
+        if "exceptions" in sys.builtin_module_names:
+            import exceptions
+
+        if "zipimport" in sys.builtin_module_names:
+            import zipimport
+
+
+def main():
+    global ENABLE_USER_SITE
+    virtual_install_main_packages()
+    if _is_pypy:
+        import_builtin_stuff()
+    abs__file__()
+    paths_in_sys = removeduppaths()
+    if os.name == "posix" and sys.path and os.path.basename(sys.path[-1]) == "Modules":
+        addbuilddir()
+    if _is_jython:
+        fixclasspath()
+    GLOBAL_SITE_PACKAGES = not os.path.exists(os.path.join(os.path.dirname(__file__), "no-global-site-packages.txt"))
+    if not GLOBAL_SITE_PACKAGES:
+        ENABLE_USER_SITE = False
+    if ENABLE_USER_SITE is None:
+        ENABLE_USER_SITE = check_enableusersite()
+    paths_in_sys = addsitepackages(paths_in_sys)
+    paths_in_sys = addusersitepackages(paths_in_sys)
+    if GLOBAL_SITE_PACKAGES:
+        paths_in_sys = virtual_addsitepackages(paths_in_sys)
+    if sys.platform == "os2emx":
+        setBEGINLIBPATH()
+    setquit()
+    setcopyright()
+    sethelper()
+    if sys.version_info[0] == 3:
+        enablerlcompleter()
+    aliasmbcs()
+    setencoding()
+    execsitecustomize()
+    if ENABLE_USER_SITE:
+        execusercustomize()
+    # Remove sys.setdefaultencoding() so that users cannot change the
+    # encoding after initialization.  The test for presence is needed when
+    # this module is run as a script, because this code is executed twice.
+    if hasattr(sys, "setdefaultencoding"):
+        del sys.setdefaultencoding
+
+
+main()
+
+
+def _script():
+    help = """\
+    %s [--user-base] [--user-site]
+
+    Without arguments print some useful information
+    With arguments print the value of USER_BASE and/or USER_SITE separated
+    by '%s'.
+
+    Exit codes with --user-base or --user-site:
+      0 - user site directory is enabled
+      1 - user site directory is disabled by user
+      2 - uses site directory is disabled by super user
+          or for security reasons
+     >2 - unknown error
+    """
+    args = sys.argv[1:]
+    if not args:
+        print("sys.path = [")
+        for dir in sys.path:
+            print("    {!r},".format(dir))
+        print("]")
+
+        def exists(path):
+            if os.path.isdir(path):
+                return "exists"
+            else:
+                return "doesn't exist"
+
+        print("USER_BASE: {!r} ({})".format(USER_BASE, exists(USER_BASE)))
+        print("USER_SITE: {!r} ({})".format(USER_SITE, exists(USER_SITE)))
+        print("ENABLE_USER_SITE: %r" % ENABLE_USER_SITE)
+        sys.exit(0)
+
+    buffer = []
+    if "--user-base" in args:
+        buffer.append(USER_BASE)
+    if "--user-site" in args:
+        buffer.append(USER_SITE)
+
+    if buffer:
+        print(os.pathsep.join(buffer))
+        if ENABLE_USER_SITE:
+            sys.exit(0)
+        elif ENABLE_USER_SITE is False:
+            sys.exit(1)
+        elif ENABLE_USER_SITE is None:
+            sys.exit(2)
+        else:
+            sys.exit(3)
+    else:
+        import textwrap
+
+        print(textwrap.dedent(help % (sys.argv[0], os.pathsep)))
+        sys.exit(10)
+
+
+if __name__ == "__main__":
+    _script()