616 lines
21 KiB
Python
616 lines
21 KiB
Python
|
"""Append module search paths for third-party packages to sys.path.
|
||
|
|
|
||
|
|
****************************************************************
|
||
|
|
* This module is automatically imported during initialization. *
|
||
|
|
****************************************************************
|
||
|
|
|
||
|
|
This will append site-specific paths to the module search path. On
|
||
|
|
Unix (including Mac OSX), it starts with sys.prefix and
|
||
|
|
sys.exec_prefix (if different) and appends
|
||
|
|
lib/python<version>/site-packages.
|
||
|
|
On other platforms (such as Windows), it tries each of the
|
||
|
|
prefixes directly, as well as with lib/site-packages appended. The
|
||
|
|
resulting directories, if they exist, are appended to sys.path, and
|
||
|
|
also inspected for path configuration files.
|
||
|
|
|
||
|
|
If a file named "pyvenv.cfg" exists one directory above sys.executable,
|
||
|
|
sys.prefix and sys.exec_prefix are set to that directory and
|
||
|
|
it is also checked for site-packages (sys.base_prefix and
|
||
|
|
sys.base_exec_prefix will always be the "real" prefixes of the Python
|
||
|
|
installation). If "pyvenv.cfg" (a bootstrap configuration file) contains
|
||
|
|
the key "include-system-site-packages" set to anything other than "false"
|
||
|
|
(case-insensitive), the system-level prefixes will still also be
|
||
|
|
searched for site-packages; otherwise they won't.
|
||
|
|
|
||
|
|
All of the resulting site-specific directories, if they exist, are
|
||
|
|
appended to sys.path, and also inspected for path configuration
|
||
|
|
files.
|
||
|
|
|
||
|
|
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/python2.5/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/python2.5/site-packages/bar
|
||
|
|
/usr/local/lib/python2.5/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.
|
||
|
|
|
||
|
|
The readline module is also automatically configured to enable
|
||
|
|
completion for systems that support it. This can be overriden in
|
||
|
|
sitecustomize, usercustomize or PYTHONSTARTUP.
|
||
|
|
|
||
|
|
After these operations, 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 sys
|
||
|
|
import os
|
||
|
|
import builtins
|
||
|
|
import _sitebuiltins
|
||
|
|
|
||
|
|
# 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
|
||
|
|
# These values are initialized by the getuserbase() and getusersitepackages()
|
||
|
|
# functions, through the main() function when Python starts.
|
||
|
|
USER_SITE = None
|
||
|
|
USER_BASE = None
|
||
|
|
|
||
|
|
|
||
|
|
def makepath(*paths):
|
||
|
|
dir = os.path.join(*paths)
|
||
|
|
try:
|
||
|
|
dir = os.path.abspath(dir)
|
||
|
|
except OSError:
|
||
|
|
pass
|
||
|
|
return dir, os.path.normcase(dir)
|
||
|
|
|
||
|
|
|
||
|
|
def abs_paths():
|
||
|
|
"""Set all module __file__ and __cached__ attributes to an absolute path"""
|
||
|
|
for m in set(sys.modules.values()):
|
||
|
|
if (getattr(getattr(m, '__loader__', None), '__module__', None) not in
|
||
|
|
('_frozen_importlib', '_frozen_importlib_external')):
|
||
|
|
continue # don't mess with a PEP 302-supplied __file__
|
||
|
|
try:
|
||
|
|
m.__file__ = os.path.abspath(m.__file__)
|
||
|
|
except (AttributeError, OSError):
|
||
|
|
pass
|
||
|
|
try:
|
||
|
|
m.__cached__ = os.path.abspath(m.__cached__)
|
||
|
|
except (AttributeError, OSError):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
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
|
||
|
|
|
||
|
|
|
||
|
|
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):
|
||
|
|
"""Process a .pth file within the site-packages directory:
|
||
|
|
For each line in the file, either combine it with sitedir to a path
|
||
|
|
and add that to known_paths, or execute it if it starts with 'import '.
|
||
|
|
"""
|
||
|
|
if known_paths is None:
|
||
|
|
known_paths = _init_pathinfo()
|
||
|
|
reset = 1
|
||
|
|
else:
|
||
|
|
reset = 0
|
||
|
|
fullname = os.path.join(sitedir, name)
|
||
|
|
try:
|
||
|
|
f = open(fullname, "r")
|
||
|
|
except OSError:
|
||
|
|
return
|
||
|
|
with f:
|
||
|
|
for n, line in enumerate(f):
|
||
|
|
if line.startswith("#"):
|
||
|
|
continue
|
||
|
|
try:
|
||
|
|
if line.startswith(("import ", "import\t")):
|
||
|
|
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)
|
||
|
|
except Exception:
|
||
|
|
print("Error processing line {:d} of {}:\n".format(n+1, fullname),
|
||
|
|
file=sys.stderr)
|
||
|
|
import traceback
|
||
|
|
for record in traceback.format_exception(*sys.exc_info()):
|
||
|
|
for line in record.splitlines():
|
||
|
|
print(' '+line, file=sys.stderr)
|
||
|
|
print("\nRemainder of file ignored", file=sys.stderr)
|
||
|
|
break
|
||
|
|
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
|
||
|
|
known_paths.add(sitedircase)
|
||
|
|
try:
|
||
|
|
names = os.listdir(sitedir)
|
||
|
|
except OSError:
|
||
|
|
return
|
||
|
|
names = [name for name in names if name.endswith(".pth")]
|
||
|
|
for name in sorted(names):
|
||
|
|
addpackage(sitedir, name, known_paths)
|
||
|
|
if reset:
|
||
|
|
known_paths = None
|
||
|
|
return known_paths
|
||
|
|
|
||
|
|
|
||
|
|
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 sys.flags.no_user_site:
|
||
|
|
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 getuserbase():
|
||
|
|
"""Returns the `user base` directory path.
|
||
|
|
|
||
|
|
The `user base` directory can be used to store data. If the global
|
||
|
|
variable ``USER_BASE`` is not initialized yet, this function will also set
|
||
|
|
it.
|
||
|
|
"""
|
||
|
|
global USER_BASE
|
||
|
|
if USER_BASE is not None:
|
||
|
|
return USER_BASE
|
||
|
|
from sysconfig import get_config_var
|
||
|
|
USER_BASE = get_config_var('userbase')
|
||
|
|
return USER_BASE
|
||
|
|
|
||
|
|
def getusersitepackages():
|
||
|
|
"""Returns the user-specific site-packages directory path.
|
||
|
|
|
||
|
|
If the global variable ``USER_SITE`` is not initialized yet, this
|
||
|
|
function will also set it.
|
||
|
|
"""
|
||
|
|
global USER_SITE
|
||
|
|
user_base = getuserbase() # this will also set USER_BASE
|
||
|
|
|
||
|
|
if USER_SITE is not None:
|
||
|
|
return USER_SITE
|
||
|
|
|
||
|
|
from sysconfig import get_path
|
||
|
|
|
||
|
|
if sys.platform == 'darwin':
|
||
|
|
from sysconfig import get_config_var
|
||
|
|
if get_config_var('PYTHONFRAMEWORK'):
|
||
|
|
USER_SITE = get_path('purelib', 'osx_framework_user')
|
||
|
|
return USER_SITE
|
||
|
|
|
||
|
|
USER_SITE = get_path('purelib', '%s_user' % os.name)
|
||
|
|
return USER_SITE
|
||
|
|
|
||
|
|
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.
|
||
|
|
"""
|
||
|
|
# get the per user site-package path
|
||
|
|
# this call will also make sure USER_BASE and USER_SITE are set
|
||
|
|
user_site = getusersitepackages()
|
||
|
|
|
||
|
|
if ENABLE_USER_SITE and os.path.isdir(user_site):
|
||
|
|
addsitedir(user_site, known_paths)
|
||
|
|
return known_paths
|
||
|
|
|
||
|
|
def getsitepackages(prefixes=None):
|
||
|
|
"""Returns a list containing all global site-packages directories.
|
||
|
|
|
||
|
|
For each directory present in ``prefixes`` (or the global ``PREFIXES``),
|
||
|
|
this function will find its `site-packages` subdirectory depending on the
|
||
|
|
system environment, and will return a list of full paths.
|
||
|
|
"""
|
||
|
|
sitepackages = []
|
||
|
|
seen = set()
|
||
|
|
|
||
|
|
if prefixes is None:
|
||
|
|
prefixes = PREFIXES
|
||
|
|
|
||
|
|
for prefix in prefixes:
|
||
|
|
if not prefix or prefix in seen:
|
||
|
|
continue
|
||
|
|
seen.add(prefix)
|
||
|
|
|
||
|
|
if os.sep == '/':
|
||
|
|
sitepackages.append(os.path.join(prefix, "lib",
|
||
|
|
"python" + sys.version[:3],
|
||
|
|
"site-packages"))
|
||
|
|
else:
|
||
|
|
sitepackages.append(prefix)
|
||
|
|
sitepackages.append(os.path.join(prefix, "lib", "site-packages"))
|
||
|
|
if sys.platform == "darwin":
|
||
|
|
# for framework builds *only* we add the standard Apple
|
||
|
|
# locations.
|
||
|
|
from sysconfig import get_config_var
|
||
|
|
framework = get_config_var("PYTHONFRAMEWORK")
|
||
|
|
if framework:
|
||
|
|
sitepackages.append(
|
||
|
|
os.path.join("/Library", framework,
|
||
|
|
sys.version[:3], "site-packages"))
|
||
|
|
return sitepackages
|
||
|
|
|
||
|
|
def addsitepackages(known_paths, prefixes=None):
|
||
|
|
"""Add site-packages to sys.path"""
|
||
|
|
for sitedir in getsitepackages(prefixes):
|
||
|
|
if os.path.isdir(sitedir):
|
||
|
|
addsitedir(sitedir, known_paths)
|
||
|
|
|
||
|
|
return known_paths
|
||
|
|
|
||
|
|
def setquit():
|
||
|
|
"""Define new builtins 'quit' and 'exit'.
|
||
|
|
|
||
|
|
These are objects which make the interpreter exit when called.
|
||
|
|
The repr of each object contains a hint at how it works.
|
||
|
|
|
||
|
|
"""
|
||
|
|
if os.sep == ':':
|
||
|
|
eof = 'Cmd-Q'
|
||
|
|
elif os.sep == '\\':
|
||
|
|
eof = 'Ctrl-Z plus Return'
|
||
|
|
else:
|
||
|
|
eof = 'Ctrl-D (i.e. EOF)'
|
||
|
|
|
||
|
|
builtins.quit = _sitebuiltins.Quitter('quit', eof)
|
||
|
|
builtins.exit = _sitebuiltins.Quitter('exit', eof)
|
||
|
|
|
||
|
|
|
||
|
|
def setcopyright():
|
||
|
|
"""Set 'copyright' and 'credits' in builtins"""
|
||
|
|
builtins.copyright = _sitebuiltins._Printer("copyright", sys.copyright)
|
||
|
|
if sys.platform[:4] == 'java':
|
||
|
|
builtins.credits = _sitebuiltins._Printer(
|
||
|
|
"credits",
|
||
|
|
"Jython is maintained by the Jython developers (www.jython.org).")
|
||
|
|
else:
|
||
|
|
builtins.credits = _sitebuiltins._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.""")
|
||
|
|
files, dirs = [], []
|
||
|
|
# Not all modules are required to have a __file__ attribute. See
|
||
|
|
# PEP 420 for more details.
|
||
|
|
if hasattr(os, '__file__'):
|
||
|
|
here = os.path.dirname(os.__file__)
|
||
|
|
files.extend(["LICENSE.txt", "LICENSE"])
|
||
|
|
dirs.extend([os.path.join(here, os.pardir), here, os.curdir])
|
||
|
|
builtins.license = _sitebuiltins._Printer(
|
||
|
|
"license",
|
||
|
|
"See https://www.python.org/psf/license/",
|
||
|
|
files, dirs)
|
||
|
|
|
||
|
|
|
||
|
|
def sethelper():
|
||
|
|
builtins.help = _sitebuiltins._Helper()
|
||
|
|
|
||
|
|
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 overriden 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 IOError:
|
||
|
|
pass
|
||
|
|
atexit.register(readline.write_history_file, history)
|
||
|
|
|
||
|
|
sys.__interactivehook__ = register_readline
|
||
|
|
|
||
|
|
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 _bootlocale, codecs
|
||
|
|
enc = _bootlocale.getpreferredencoding(False)
|
||
|
|
if enc.startswith('cp'): # "cp***" ?
|
||
|
|
try:
|
||
|
|
codecs.lookup(enc)
|
||
|
|
except LookupError:
|
||
|
|
import encodings
|
||
|
|
encodings._cache[enc] = encodings._unknown
|
||
|
|
encodings.aliases.aliases[enc] = 'mbcs'
|
||
|
|
|
||
|
|
CONFIG_LINE = r'^(?P<key>(\w|[-_])+)\s*=\s*(?P<value>.*)\s*$'
|
||
|
|
|
||
|
|
def venv(known_paths):
|
||
|
|
global PREFIXES, ENABLE_USER_SITE
|
||
|
|
|
||
|
|
env = os.environ
|
||
|
|
if sys.platform == 'darwin' and '__PYVENV_LAUNCHER__' in env:
|
||
|
|
executable = os.environ['__PYVENV_LAUNCHER__']
|
||
|
|
else:
|
||
|
|
executable = sys.executable
|
||
|
|
exe_dir, _ = os.path.split(os.path.abspath(executable))
|
||
|
|
site_prefix = os.path.dirname(exe_dir)
|
||
|
|
sys._home = None
|
||
|
|
conf_basename = 'pyvenv.cfg'
|
||
|
|
candidate_confs = [
|
||
|
|
conffile for conffile in (
|
||
|
|
os.path.join(exe_dir, conf_basename),
|
||
|
|
os.path.join(site_prefix, conf_basename)
|
||
|
|
)
|
||
|
|
if os.path.isfile(conffile)
|
||
|
|
]
|
||
|
|
|
||
|
|
if candidate_confs:
|
||
|
|
import re
|
||
|
|
config_line = re.compile(CONFIG_LINE)
|
||
|
|
virtual_conf = candidate_confs[0]
|
||
|
|
system_site = "true"
|
||
|
|
with open(virtual_conf) as f:
|
||
|
|
for line in f:
|
||
|
|
line = line.strip()
|
||
|
|
m = config_line.match(line)
|
||
|
|
if m:
|
||
|
|
d = m.groupdict()
|
||
|
|
key, value = d['key'].lower(), d['value']
|
||
|
|
if key == 'include-system-site-packages':
|
||
|
|
system_site = value.lower()
|
||
|
|
elif key == 'home':
|
||
|
|
sys._home = value
|
||
|
|
elif key == 'applocal' and value.lower() == 'true':
|
||
|
|
# App-local installs use the exe_dir as prefix,
|
||
|
|
# not one level higher, and do not use system
|
||
|
|
# site packages.
|
||
|
|
site_prefix = exe_dir
|
||
|
|
system_site = 'false'
|
||
|
|
|
||
|
|
sys.prefix = sys.exec_prefix = site_prefix
|
||
|
|
|
||
|
|
# Doing this here ensures venv takes precedence over user-site
|
||
|
|
addsitepackages(known_paths, [sys.prefix])
|
||
|
|
|
||
|
|
# addsitepackages will process site_prefix again if its in PREFIXES,
|
||
|
|
# but that's ok; known_paths will prevent anything being added twice
|
||
|
|
if system_site == "true":
|
||
|
|
PREFIXES.insert(0, sys.prefix)
|
||
|
|
else:
|
||
|
|
PREFIXES = [sys.prefix]
|
||
|
|
ENABLE_USER_SITE = False
|
||
|
|
|
||
|
|
return known_paths
|
||
|
|
|
||
|
|
|
||
|
|
def execsitecustomize():
|
||
|
|
"""Run custom site specific code, if available."""
|
||
|
|
try:
|
||
|
|
import sitecustomize
|
||
|
|
except ImportError:
|
||
|
|
pass
|
||
|
|
except Exception as err:
|
||
|
|
if os.environ.get("PYTHONVERBOSE"):
|
||
|
|
sys.excepthook(*sys.exc_info())
|
||
|
|
else:
|
||
|
|
sys.stderr.write(
|
||
|
|
"Error in sitecustomize; set PYTHONVERBOSE for traceback:\n"
|
||
|
|
"%s: %s\n" %
|
||
|
|
(err.__class__.__name__, err))
|
||
|
|
|
||
|
|
|
||
|
|
def execusercustomize():
|
||
|
|
"""Run custom user specific code, if available."""
|
||
|
|
try:
|
||
|
|
import usercustomize
|
||
|
|
except ImportError:
|
||
|
|
pass
|
||
|
|
except Exception as err:
|
||
|
|
if os.environ.get("PYTHONVERBOSE"):
|
||
|
|
sys.excepthook(*sys.exc_info())
|
||
|
|
else:
|
||
|
|
sys.stderr.write(
|
||
|
|
"Error in usercustomize; set PYTHONVERBOSE for traceback:\n"
|
||
|
|
"%s: %s\n" %
|
||
|
|
(err.__class__.__name__, err))
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
"""Add standard site-specific directories to the module search path.
|
||
|
|
|
||
|
|
This function is called automatically when this module is imported,
|
||
|
|
unless the python interpreter was started with the -S flag.
|
||
|
|
"""
|
||
|
|
global ENABLE_USER_SITE
|
||
|
|
|
||
|
|
abs_paths()
|
||
|
|
known_paths = removeduppaths()
|
||
|
|
known_paths = venv(known_paths)
|
||
|
|
if ENABLE_USER_SITE is None:
|
||
|
|
ENABLE_USER_SITE = check_enableusersite()
|
||
|
|
known_paths = addusersitepackages(known_paths)
|
||
|
|
known_paths = addsitepackages(known_paths)
|
||
|
|
setquit()
|
||
|
|
setcopyright()
|
||
|
|
sethelper()
|
||
|
|
enablerlcompleter()
|
||
|
|
aliasmbcs()
|
||
|
|
execsitecustomize()
|
||
|
|
if ENABLE_USER_SITE:
|
||
|
|
execusercustomize()
|
||
|
|
|
||
|
|
# Prevent edition of sys.path when python was started with -S and
|
||
|
|
# site is imported later.
|
||
|
|
if not sys.flags.no_site:
|
||
|
|
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:
|
||
|
|
user_base = getuserbase()
|
||
|
|
user_site = getusersitepackages()
|
||
|
|
print("sys.path = [")
|
||
|
|
for dir in sys.path:
|
||
|
|
print(" %r," % (dir,))
|
||
|
|
print("]")
|
||
|
|
print("USER_BASE: %r (%s)" % (user_base,
|
||
|
|
"exists" if os.path.isdir(user_base) else "doesn't exist"))
|
||
|
|
print("USER_SITE: %r (%s)" % (user_site,
|
||
|
|
"exists" if os.path.isdir(user_site) else "doesn't exist"))
|
||
|
|
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()
|