site Namespace Reference

Data Structures
class	_Printer
class	_Helper

Functions
def	makepath
def	addsitedir
def	addpackage

Variables
list	L = []
dictionary	_dirs_in_sys_path = {}
string	s = "build/lib.%s-%.3s"
list	prefixes = [sys.prefix]
list	sitedirs
string	exit = 'Use Cmd-Q to quit.'
tuple	here = os.path.dirname(os.__file__)
string	encoding = "ascii"
tuple	loc = locale.getdefaultlocale()

Detailed Description

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 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.
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.

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/python1.5/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/python1.5/site-packages/bar
  /usr/local/lib/python1.5/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.

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.

Function Documentation

def site.addpackage	(		sitedir,
			name
	)

Definition at line 132 of file site.py.

References makepath(), and aifc.open().

def addpackage(sitedir, name):
    global _dirs_in_sys_path
    if _dirs_in_sys_path is None:
        _init_pathinfo()
        reset = 1
    else:
        reset = 0
    fullname = os.path.join(sitedir, name)
    try:
        f = open(fullname)
    except IOError:
        return
    while 1:
        dir = f.readline()
        if not dir:
            break
        if dir[0] == '#':
            continue
        if dir.startswith("import"):
            exec dir
            continue
        if dir[-1] == '\n':
            dir = dir[:-1]
        dir, dircase = makepath(sitedir, dir)
        if not _dirs_in_sys_path.has_key(dircase) and os.path.exists(dir):
            sys.path.append(dir)
            _dirs_in_sys_path[dircase] = 1
    if reset:
        _dirs_in_sys_path = None