kdev-python-21.12.3/documentation_files/sys.py

#!/usr/bin/env python2.7
# -*- coding: utf-8 -*-
""":synopsis: Access system-specific parameters and functions.


This module provides access to some variables used or maintained by the
interpreter and to functions that interact strongly with the interpreter. It is
always available.


"""
"""
The list of command line arguments passed to a Python script. ``argv[0]`` is the
script name (it is operating system dependent whether this is a full pathname or
not).  If the command was executed using the :option:`-c` command line option to
the interpreter, ``argv[0]`` is set to the string ``'-c'``.  If no script name
was passed to the Python interpreter, ``argv[0]`` is the empty string.

To loop over the standard input, or the list of files given on the
command line, see the :mod:`fileinput` module.


"""
argv = [str()]
"""
An indicator of the native byte order.  This will have the value ``'big'`` on
big-endian (most-significant byte first) platforms, and ``'little'`` on
little-endian (least-significant byte first) platforms.

"""
byteorder = str()
"""
A triple (repo, branch, version) representing the Subversion information of the
Python interpreter. *repo* is the name of the repository, ``'CPython'``.
*branch* is a string of one of the forms ``'trunk'``, ``'branches/name'`` or
``'tags/name'``. *version* is the output of ``svnversion``, if the interpreter
was built from a Subversion checkout; it contains the revision number (range)
and possibly a trailing 'M' if there were local modifications. If the tree was
exported (or svnversion was not available), it is the revision of
``Include/patchlevel.h`` if the branch is a tag. Otherwise, it is ``None``.

"""
subversion = (str(), str(), str())
"""
A tuple of strings giving the names of all modules that are compiled into this
Python interpreter.  (This information is not available in any other way ---
``modules.keys()`` only lists the imported modules.)


"""
builtin_module_names = (str())
"""
A string containing the copyright pertaining to the Python interpreter.


"""
copyright = str()
"""
Integer specifying the handle of the Python DLL. Availability: Windows.


"""
dllhandle = int()
"""__excepthook__

These objects contain the original values of ``displayhook`` and ``excepthook``
at the start of the program.  They are saved so that ``displayhook`` and
``excepthook`` can be restored in case they happen to get replaced with broken
objects.


"""
__displayhook__ = None
exc_value = None
exc_traceback = None
exc_type = None
"""
A string giving the site-specific directory prefix where the platform-dependent
Python files are installed; by default, this is also ``'/usr/local'``.  This can
be set at build time with the ``--exec-prefix`` argument to the
:program:`configure` script.  Specifically, all configuration files (e.g. the
:file:`pyconfig.h` header file) are installed in the directory ``exec_prefix +
'/lib/pythonversion/config'``, and shared library modules are installed in
``exec_prefix + '/lib/pythonversion/lib-dynload'``, where *version* is equal to
``version[:3]``.


"""
exec_prefix = str()
"""
A string giving the name of the executable binary for the Python interpreter, on
systems where this makes sense.


"""
executable = str()
"""
This value is not actually defined by the module, but can be set by the user (or
by a program) to specify a clean-up action at program exit.  When set, it should
be a parameterless function.  This function will be called when the interpreter
exits.  Only one function may be installed in this way; to allow multiple
functions which will be called at termination, use the :mod:`atexit` module.

"""
exitfunc = lambda: None
"""
The struct sequence *flags* exposes the status of command line flags. The
attributes are read only.

============================= ===================================
attribute                     flag
============================= ===================================
:const:`debug`                :option:`-d`
:const:`py3k_warning`         :option:`-3`
:const:`division_warning`     :option:`-Q`
:const:`division_new`         :option:`-Qnew <-Q>`
:const:`inspect`              :option:`-i`
:const:`interactive`          :option:`-i`
:const:`optimize`             :option:`-O` or :option:`-OO`
:const:`dont_write_bytecode`  :option:`-B`
:const:`no_user_site`         :option:`-s`
:const:`no_site`              :option:`-S`
:const:`ignore_environment`   :option:`-E`
:const:`tabcheck`             :option:`-t` or :option:`-tt <-t>`
:const:`verbose`              :option:`-v`
:const:`unicode`              :option:`-U`
:const:`bytes_warning`        :option:`-b`
============================= ===================================

"""
flags = None
"""
A structseq holding information about the float type. It contains low level
information about the precision and internal representation.  The values
correspond to the various floating-point constants defined in the standard
header file :file:`float.h` for the 'C' programming language; see section
5.2.4.2.2 of the 1999 ISO/IEC C standard [C99]_, 'Characteristics of
floating types', for details.

+---------------------+----------------+--------------------------------------------------+
| attribute           | float.h macro  | explanation                                      |
+=====================+================+==================================================+
| :const:`epsilon`    | DBL_EPSILON    | difference between 1 and the least value greater |
|                     |                | than 1 that is representable as a float          |
+---------------------+----------------+--------------------------------------------------+
| :const:`dig`        | DBL_DIG        | maximum number of decimal digits that can be     |
|                     |                | faithfully represented in a float;  see below    |
+---------------------+----------------+--------------------------------------------------+
| :const:`mant_dig`   | DBL_MANT_DIG   | float precision: the number of base-``radix``    |
|                     |                | digits in the significand of a float             |
+---------------------+----------------+--------------------------------------------------+
| :const:`max`        | DBL_MAX        | maximum representable finite float               |
+---------------------+----------------+--------------------------------------------------+
| :const:`max_exp`    | DBL_MAX_EXP    | maximum integer e such that ``radix**(e-1)`` is  |
|                     |                | a representable finite float                     |
+---------------------+----------------+--------------------------------------------------+
| :const:`max_10_exp` | DBL_MAX_10_EXP | maximum integer e such that ``10**e`` is in the  |
|                     |                | range of representable finite floats             |
+---------------------+----------------+--------------------------------------------------+
| :const:`min`        | DBL_MIN        | minimum positive normalized float                |
+---------------------+----------------+--------------------------------------------------+
| :const:`min_exp`    | DBL_MIN_EXP    | minimum integer e such that ``radix**(e-1)`` is  |
|                     |                | a normalized float                               |
+---------------------+----------------+--------------------------------------------------+
| :const:`min_10_exp` | DBL_MIN_10_EXP | minimum integer e such that ``10**e`` is a       |
|                     |                | normalized float                                 |
+---------------------+----------------+--------------------------------------------------+
| :const:`radix`      | FLT_RADIX      | radix of exponent representation                 |
+---------------------+----------------+--------------------------------------------------+
| :const:`rounds`     | FLT_ROUNDS     | constant representing rounding mode              |
|                     |                | used for arithmetic operations                   |
+---------------------+----------------+--------------------------------------------------+

The attribute :attr:`sys.float_info.dig` needs further explanation.  If
``s`` is any string representing a decimal number with at most
:attr:`sys.float_info.dig` significant digits, then converting ``s`` to a
float and back again will recover a string representing the same decimal
value::

>>> import sys
>>> sys.float_info.dig
15
>>> s = '3.14159265358979'    # decimal string with 15 significant digits
>>> format(float(s), '.15g')  # convert to float and back -> same value
'3.14159265358979'

But for strings with more than :attr:`sys.float_info.dig` significant digits,
this isn't always true::

>>> s = '9876543211234567'    # 16 significant digits is too many!
>>> format(float(s), '.16g')  # conversion changes value
'9876543211234568'

"""
float_info = None
"""
A string indicating how the :func:`repr` function behaves for
floats.  If the string has value ``'short'`` then for a finite
float ``x``, ``repr(x)`` aims to produce a short string with the
property that ``float(repr(x)) == x``.  This is the usual behaviour
in Python 2.7 and later.  Otherwise, ``float_repr_style`` has value
``'legacy'`` and ``repr(x)`` behaves in the same way as it did in
versions of Python prior to 2.7.

"""
float_repr_style = str()
"""
The version number encoded as a single integer.  This is guaranteed to increase
with each version, including proper support for non-production releases.  For
example, to test that the Python interpreter is at least version 1.5.2, use::

if sys.hexversion >= 0x010502F0:
# use some advanced feature
more
else:
# use an alternative implementation or warn the user
more

This is called ``hexversion`` since it only really looks meaningful when viewed
as the result of passing it to the built-in :func:`hex` function.  The
``version_info`` value may be used for a more human-friendly encoding of the
same information.

The ``hexversion`` is a 32-bit number with the following layout:

+-------------------------+------------------------------------------------+
| Bits (big endian order) | Meaning                                        |
+=========================+================================================+
| :const:`1-8`            |  ``PY_MAJOR_VERSION``  (the ``2`` in           |
|                         |  ``2.1.0a3``)                                  |
+-------------------------+------------------------------------------------+
| :const:`9-16`           |  ``PY_MINOR_VERSION``  (the ``1`` in           |
|                         |  ``2.1.0a3``)                                  |
+-------------------------+------------------------------------------------+
| :const:`17-24`          |  ``PY_MICRO_VERSION``  (the ``0`` in           |
|                         |  ``2.1.0a3``)                                  |
+-------------------------+------------------------------------------------+
| :const:`25-28`          |  ``PY_RELEASE_LEVEL``  (``0xA`` for alpha,     |
|                         |  ``0xB`` for beta, ``0xC`` for release         |
|                         |  candidate and ``0xF`` for final)              |
+-------------------------+------------------------------------------------+
| :const:`29-32`          |  ``PY_RELEASE_SERIAL``  (the ``3`` in          |
|                         |  ``2.1.0a3``, zero for final releases)         |
+-------------------------+------------------------------------------------+

Thus ``2.1.0a3`` is hexversion ``0x020100a3``.

"""
hexversion = str()
"""
A struct sequence that holds information about Python's
internal representation of integers.  The attributes are read only.

+-------------------------+----------------------------------------------+
| Attribute               | Explanation                                  |
+=========================+==============================================+
| :const:`bits_per_digit` | number of bits held in each digit.  Python   |
|                         | integers are stored internally in base       |
|                         | ``2**long_info.bits_per_digit``              |
+-------------------------+----------------------------------------------+
| :const:`sizeof_digit`   | size in bytes of the C type used to          |
|                         | represent a digit                            |
+-------------------------+----------------------------------------------+

"""
long_info = None
"""
These three variables are not always defined; they are set when an exception is
not handled and the interpreter prints an error message and a stack traceback.
Their intended use is to allow an interactive user to import a debugger module
and engage in post-mortem debugging without having to re-execute the command
that caused the error.  (Typical use is ``import pdb; pdb.pm()`` to enter the
post-mortem debugger; see chapter :ref:`debugger` for
more information.)

The meaning of the variables is the same as that of the return values from
:func:`exc_info` above.  (Since there is only one interactive thread,
thread-safety is not a concern for these variables, unlike for ``exc_type``
etc.)


"""
last_traceback = None
last_value = None
last_type = None
"""
The largest positive integer supported by Python's regular integer type.  This
is at least 2\*\*31-1.  The largest negative integer is ``-maxint-1`` --- the
asymmetry results from the use of 2's complement binary arithmetic.

"""
maxint = int()
"""
The largest positive integer supported by the platform's Py_ssize_t type,
and thus the maximum size lists, strings, dicts, and many other containers
can have.

"""
maxsize = int()
"""
An integer giving the largest supported code point for a Unicode character.  The
value of this depends on the configuration option that specifies whether Unicode
characters are stored as UCS-2 or UCS-4.


"""
maxunicode = int()
"""
A list of :term:`finder` objects that have their :meth:`find_module`
methods called to see if one of the objects can find the module to be
imported. The :meth:`find_module` method is called at least with the
absolute name of the module being imported. If the module to be imported is
contained in package then the parent package's :attr:`__path__` attribute
is passed in as a second argument. The method returns :keyword:`None` if
the module cannot be found, else returns a :term:`loader`.

:data:`sys.meta_path` is searched before any implicit default finders or
:data:`sys.path`.

See :pep:`302` for the original specification.


"""
meta_path = [None]
modules = None
path = [str()]
"""
A list of callables that take a path argument to try to create a
:term:`finder` for the path. If a finder can be created, it is to be
returned by the callable, else raise :exc:`ImportError`.

Originally specified in :pep:`302`.


"""
path_hooks = [lambda: None]
"""
A dictionary acting as a cache for :term:`finder` objects. The keys are
paths that have been passed to :data:`sys.path_hooks` and the values are
the finders that are found. If a path is a valid file system path but no
explicit finder is found on :data:`sys.path_hooks` then :keyword:`None` is
stored to represent the implicit default finder should be used. If the path
is not an existing path then :class:`imp.NullImporter` is set.

Originally specified in :pep:`302`.


"""
path_importer_cache = None
"""
This string contains a platform identifier that can be used to append
platform-specific components to :data:`sys.path`, for instance.

For Unix systems, this is the lowercased OS name as returned by ``uname -s``
with the first part of the version as returned by ``uname -r`` appended,
e.g. ``'sunos5'`` or ``'linux2'``, *at the time when Python was built*.
For other systems, the values are:

================ ===========================
System           :data:`platform` value
================ ===========================
Windows          ``'win32'``
Windows/Cygwin   ``'cygwin'``
Mac OS X         ``'darwin'``
OS/2             ``'os2'``
OS/2 EMX         ``'os2emx'``
RiscOS           ``'riscos'``
AtheOS           ``'atheos'``
================ ===========================


"""
platform = str()
"""
A string giving the site-specific directory prefix where the platform
independent Python files are installed; by default, this is the string
``'/usr/local'``.  This can be set at build time with the ``--prefix``
argument to the :program:`configure` script.  The main collection of Python
library modules is installed in the directory ``prefix + '/lib/pythonversion'``
while the platform independent header files (all except :file:`pyconfig.h`) are
stored in ``prefix + '/include/pythonversion'``, where *version* is equal to
``version[:3]``.


"""
prefix = str()
ps2 = None
ps1 = None
"""
Bool containing the status of the Python 3.0 warning flag. It's ``True``
when Python is started with the -3 option.  (This should be considered
read-only; setting it to a different value doesn't have an effect on
Python 3.0 warnings.)

"""
py3kwarning = False
"""
If this is true, Python won't try to write ``.pyc`` or ``.pyo`` files on the
import of source modules.  This value is initially set to ``True`` or ``False``
depending on the ``-B`` command line option and the ``PYTHONDONTWRITEBYTECODE``
environment variable, but you can set it yourself to control bytecode file
generation.

"""
dont_write_bytecode = False
"""
File objects corresponding to the interpreter's standard input, output and error
streams.  ``stdin`` is used for all interpreter input except for scripts but
including calls to :func:`input` and :func:`raw_input`.  ``stdout`` is used for
the output of :keyword:`print` and :term:`expression` statements and for the
prompts of :func:`input` and :func:`raw_input`. The interpreter's own prompts
and (almost all of) its error messages go to ``stderr``.  ``stdout`` and
``stderr`` needn't be built-in file objects: any object is acceptable as long
as it has a :meth:`write` method that takes a string argument.  (Changing these
objects doesn't affect the standard I/O streams of processes executed by
:func:`os.popen`, :func:`os.system` or the :func:`exec\*` family of functions in
the :mod:`os` module.)


"""
stdin = open("stdin", "rw")
"""
File objects corresponding to the interpreter's standard input, output and error
streams.  ``stdin`` is used for all interpreter input except for scripts but
including calls to :func:`input` and :func:`raw_input`.  ``stdout`` is used for
the output of :keyword:`print` and :term:`expression` statements and for the
prompts of :func:`input` and :func:`raw_input`. The interpreter's own prompts
and (almost all of) its error messages go to ``stderr``.  ``stdout`` and
``stderr`` needn't be built-in file objects: any object is acceptable as long
as it has a :meth:`write` method that takes a string argument.  (Changing these
objects doesn't affect the standard I/O streams of processes executed by
:func:`os.popen`, :func:`os.system` or the :func:`exec\*` family of functions in
the :mod:`os` module.)


"""
stdout = open("stdout", "rw")
"""
File objects corresponding to the interpreter's standard input, output and error
streams.  ``stdin`` is used for all interpreter input except for scripts but
including calls to :func:`input` and :func:`raw_input`.  ``stdout`` is used for
the output of :keyword:`print` and :term:`expression` statements and for the
prompts of :func:`input` and :func:`raw_input`. The interpreter's own prompts
and (almost all of) its error messages go to ``stderr``.  ``stdout`` and
``stderr`` needn't be built-in file objects: any object is acceptable as long
as it has a :meth:`write` method that takes a string argument.  (Changing these
objects doesn't affect the standard I/O streams of processes executed by
:func:`os.popen`, :func:`os.system` or the :func:`exec\*` family of functions in
the :mod:`os` module.)


"""
stderr = open("stderr", "rw")
"""
These objects contain the original values of ``stdin``, ``stderr`` and
``stdout`` at the start of the program.  They are used during finalization,
and could be useful to print to the actual standard stream no matter if the
``sys.std*`` object has been redirected.

It can also be used to restore the actual files to known working file objects
in case they have been overwritten with a broken object.  However, the
preferred way to do this is to explicitly save the previous stream before
replacing it, and restore the saved object.


"""
__stdout__ = stdout
__stderr__ = stderr
__stdin__ = stdin
"""
When this variable is set to an integer value, it determines the maximum number
of levels of traceback information printed when an unhandled exception occurs.
The default is ``1000``.  When set to ``0`` or less, all traceback information
is suppressed and only the exception type and value are printed.


"""
tracebacklimit = 1000
"""
A string containing the version number of the Python interpreter plus additional
information on the build number and compiler used.  This string is displayed
when the interactive interpreter is started.  Do not extract version information
out of it, rather, use :data:`version_info` and the functions provided by the
:mod:`platform` module.


"""
version = str()
"""
The C API version for this interpreter.  Programmers may find this useful when
debugging version conflicts between Python and extension modules.

"""
api_version = str()
"""
A tuple containing the five components of the version number: *major*, *minor*,
*micro*, *releaselevel*, and *serial*.  All values except *releaselevel* are
integers; the release level is ``'alpha'``, ``'beta'``, ``'candidate'``, or
``'final'``.  The ``version_info`` value corresponding to the Python version 2.0
is ``(2, 0, 0, 'final', 0)``.  The components can also be accessed by name,
so ``sys.version_info[0]`` is equivalent to ``sys.version_info.major``
and so on.

"""
version_info = (3, 5, 0, 0, 0)
"""
This is an implementation detail of the warnings framework; do not modify this
value.  Refer to the :mod:`warnings` module for more information on the warnings
framework.


"""
warnoptions = None
"""
The version number used to form registry keys on Windows platforms. This is
stored as string resource 1000 in the Python DLL.  The value is normally the
first three characters of :const:`version`.  It is provided in the :mod:`sys`
module for informational purposes; modifying this value has no effect on the
registry keys used by Python. Availability: Windows.

"""
winver = str()
def call_tracing(func,args):
	"""
	Call ``func(*args)``, while tracing is enabled.  The tracing state is saved,
	and restored afterwards.  This is intended to be called from a debugger from
	a checkpoint, to recursively debug some other code.


	"""
	pass

def _clear_type_cache():
	"""
	Clear the internal type cache. The type cache is used to speed up attribute
	and method lookups. Use the function *only* to drop unnecessary references
	during reference leak debugging.

	This function should be used for internal and specialized purposes only.

	"""
	pass

def _current_frames():
	"""
	Return a dictionary mapping each thread's identifier to the topmost stack frame
	currently active in that thread at the time the function is called. Note that
	functions in the :mod:`traceback` module can build the call stack given such a
	frame.

	This is most useful for debugging deadlock:  this function does not require the
	deadlocked threads' cooperation, and such threads' call stacks are frozen for as
	long as they remain deadlocked.  The frame returned for a non-deadlocked thread
	may bear no relationship to that thread's current activity by the time calling
	code examines the frame.

	This function should be used for internal and specialized purposes only.

	"""
	dict()

def displayhook(value):
	"""
	If *value* is not ``None``, this function prints it to ``sys.stdout``, and saves
	it in ``__builtin__._``.

	``sys.displayhook`` is called on the result of evaluating an :term:`expression`
	entered in an interactive Python session.  The display of these values can be
	customized by assigning another one-argument function to ``sys.displayhook``.


	"""
	pass

def excepthook(type,value,traceback):
	"""
	This function prints out a given traceback and exception to ``sys.stderr``.

	When an exception is raised and uncaught, the interpreter calls
	``sys.excepthook`` with three arguments, the exception class, exception
	instance, and a traceback object.  In an interactive session this happens just
	before control is returned to the prompt; in a Python program this happens just
	before the program exits.  The handling of such top-level exceptions can be
	customized by assigning another three-argument function to ``sys.excepthook``.


	"""
	pass

def exc_info():
	"""
	This function returns a tuple of three values that give information about the
	exception that is currently being handled.  The information returned is specific
	both to the current thread and to the current stack frame.  If the current stack
	frame is not handling an exception, the information is taken from the calling
	stack frame, or its caller, and so on until a stack frame is found that is
	handling an exception.  Here, "handling an exception" is defined as "executing
	or having executed an except clause."  For any stack frame, only information
	about the most recently handled exception is accessible.

	"""
	return tuple()

def exc_clear():
	"""
	This function clears all information relating to the current or last exception
	that occurred in the current thread.  After calling this function,
	:func:`exc_info` will return three ``None`` values until another exception is
	raised in the current thread or the execution stack returns to a frame where
	another exception is being handled.

	This function is only needed in only a few obscure situations.  These include
	logging and error handling systems that report information on the last or
	current exception.  This function can also be used to try to free resources and
	trigger object finalization, though no guarantee is made as to what objects will
	be freed, if any.

	"""
	pass

def exit(arg: int):
	"""
	Exit from Python.  This is implemented by raising the :exc:`SystemExit`
	exception, so cleanup actions specified by finally clauses of :keyword:`try`
	statements are honored, and it is possible to intercept the exit attempt at
	an outer level.

	The optional argument *arg* can be an integer giving the exit status
	(defaulting to zero), or another type of object.  If it is an integer, zero
	is considered "successful termination" and any nonzero value is considered
	"abnormal termination" by shells and the like.  Most systems require it to be
	in the range 0-127, and produce undefined results otherwise.  Some systems
	have a convention for assigning specific meanings to specific exit codes, but
	these are generally underdeveloped; Unix programs generally use 2 for command
	line syntax errors and 1 for all other kind of errors.  If another type of
	object is passed, ``None`` is equivalent to passing zero, and any other
	object is printed to :data:`stderr` and results in an exit code of 1.  In
	particular, ``sys.exit("some error message")`` is a quick way to exit a
	program when an error occurs.

	Since :func:`exit` ultimately "only" raises an exception, it will only exit
	the process when called from the main thread, and the exception is not
	intercepted.


	"""
	pass

def getcheckinterval():
	"""
	Return the interpreter's "check interval"; see :func:`setcheckinterval`.

	"""
	return int()

def getdefaultencoding():
	"""
	Return the name of the current default string encoding used by the Unicode
	implementation.

	"""
	return str()

def getdlopenflags():
	"""
	Return the current value of the flags that are used for :cfunc:`dlopen` calls.
	The flag constants are defined in the :mod:`dl` and :mod:`DLFCN` modules.
	Availability: Unix.

	"""
	return str()

def getfilesystemencoding():
	"""
	Return the name of the encoding used to convert Unicode filenames into system
	file names, or ``None`` if the system default encoding is used. The result value
	depends on the operating system:

	* On Mac OS X, the encoding is ``'utf-8'``.

	* On Unix, the encoding is the user's preference according to the result of
	nl_langinfo(CODESET), or ``None`` if the ``nl_langinfo(CODESET)``
	failed.

	* On Windows NT+, file names are Unicode natively, so no conversion is
	performed. :func:`getfilesystemencoding` still returns ``'mbcs'``, as
	this is the encoding that applications should use when they explicitly
	want to convert Unicode strings to byte strings that are equivalent when
	used as file names.

	* On Windows 9x, the encoding is ``'mbcs'``.

	"""
	return "utf-8"

def getrefcount(object):
	"""
	Return the reference count of the *object*.  The count returned is generally one
	higher than you might expect, because it includes the (temporary) reference as
	an argument to :func:`getrefcount`.


	"""
	return 0

def getrecursionlimit():
	"""
	Return the current value of the recursion limit, the maximum depth of the Python
	interpreter stack.  This limit prevents infinite recursion from causing an
	overflow of the C stack and crashing Python.  It can be set by
	:func:`setrecursionlimit`.


	"""
	return 1000

def getsizeof(object,default):
	"""
	Return the size of an object in bytes. The object can be any type of
	object. All built-in objects will return correct results, but this
	does not have to hold true for third-party extensions as it is implementation
	specific.

	If given, *default* will be returned if the object does not provide means to
	retrieve the size.  Otherwise a :exc:`TypeError` will be raised.

	:func:`getsizeof` calls the object's ``__sizeof__`` method and adds an
	additional garbage collector overhead if the object is managed by the garbage
	collector.

	"""
	return 0

def _getframe(depth: int):
	"""
	Return a frame object from the call stack.  If optional integer *depth* is
	given, return the frame object that many calls below the top of the stack.  If
	that is deeper than the call stack, :exc:`ValueError` is raised.  The default
	for *depth* is zero, returning the frame at the top of the call stack.

	"""
	pass

def getprofile():
	pass

def gettrace():
	pass

def getwindowsversion():
	"""
	Return a named tuple describing the Windows version
	currently running.  The named elements are *major*, *minor*,
	*build*, *platform*, *service_pack*, *service_pack_minor*,
	*service_pack_major*, *suite_mask*, and *product_type*.
	*service_pack* contains a string while all other values are
	integers. The components can also be accessed by name, so
	``sys.getwindowsversion()[0]`` is equivalent to
	``sys.getwindowsversion().major``. For compatibility with prior
	versions, only the first 5 elements are retrievable by indexing.

	*platform* may be one of the following values:

	+-----------------------------------------+-------------------------+
	| Constant                                | Platform                |
	+=========================================+=========================+
	| :const:`0 (VER_PLATFORM_WIN32s)`        | Win32s on Windows 3.1   |
	+-----------------------------------------+-------------------------+
	| :const:`1 (VER_PLATFORM_WIN32_WINDOWS)` | Windows 95/98/ME        |
	+-----------------------------------------+-------------------------+
	| :const:`2 (VER_PLATFORM_WIN32_NT)`      | Windows NT/2000/XP/x64  |
	+-----------------------------------------+-------------------------+
	| :const:`3 (VER_PLATFORM_WIN32_CE)`      | Windows CE              |
	+-----------------------------------------+-------------------------+

	*product_type* may be one of the following values:

	+---------------------------------------+---------------------------------+
	| Constant                              | Meaning                         |
	+=======================================+=================================+
	| :const:`1 (VER_NT_WORKSTATION)`       | The system is a workstation.    |
	+---------------------------------------+---------------------------------+
	| :const:`2 (VER_NT_DOMAIN_CONTROLLER)` | The system is a domain          |
	|                                       | controller.                     |
	+---------------------------------------+---------------------------------+
	| :const:`3 (VER_NT_SERVER)`            | The system is a server, but not |
	|                                       | a domain controller.            |
	+---------------------------------------+---------------------------------+


	This function wraps the Win32 :cfunc:`GetVersionEx` function; see the
	Microsoft documentation on :cfunc:`OSVERSIONINFOEX` for more information
	about these fields.

	Availability: Windows.

	"""
	return (0, 0)

def setcheckinterval(interval: int):
	"""
	Set the interpreter's "check interval".  This integer value determines how often
	the interpreter checks for periodic things such as thread switches and signal
	handlers.  The default is ``100``, meaning the check is performed every 100
	Python virtual instructions. Setting it to a larger value may increase
	performance for programs using threads.  Setting it to a value ``<=`` 0 checks
	every virtual instruction, maximizing responsiveness as well as overhead.


	"""
	pass

def setdefaultencoding(name):
	"""
	Set the current default string encoding used by the Unicode implementation.  If
	*name* does not match any available encoding, :exc:`LookupError` is raised.
	This function is only intended to be used by the :mod:`site` module
	implementation and, where needed, by :mod:`sitecustomize`.  Once used by the
	:mod:`site` module, it is removed from the :mod:`sys` module's namespace.

	.. mod:`site` is not imported if the :option:`-S` option is passed
	to the interpreter, in which case this function will remain available.

	"""
	pass

def setdlopenflags(n):
	"""
	Set the flags used by the interpreter for :cfunc:`dlopen` calls, such as when
	the interpreter loads extension modules.  Among other things, this will enable a
	lazy resolving of symbols when importing a module, if called as
	``sys.setdlopenflags(0)``.  To share symbols across extension modules, call as
	``sys.setdlopenflags(dl.RTLD_NOW | dl.RTLD_GLOBAL)``.  Symbolic names for the
	flag modules can be either found in the :mod:`dl` module, or in the :mod:`DLFCN`
	module. If :mod:`DLFCN` is not available, it can be generated from
	:file:`/usr/include/dlfcn.h` using the :program:`h2py` script. Availability:
	Unix.

	"""
	pass

def setprofile(profilefunc):
	pass

def setrecursionlimit(limit):
	"""
	Set the maximum depth of the Python interpreter stack to *limit*.  This limit
	prevents infinite recursion from causing an overflow of the C stack and crashing
	Python.

	The highest possible limit is platform-dependent.  A user may need to set the
	limit higher when she has a program that requires deep recursion and a platform
	that supports a higher limit.  This should be done with care, because a too-high
	limit can lead to a crash.


	"""
	pass

def settrace(tracefunc):
	"""
	"""
	pass

def settscdump(on_flag):
	"""
	Activate dumping of VM measurements using the Pentium timestamp counter, if
	*on_flag* is true. Deactivate these dumps if *on_flag* is off. The function is
	available only if Python was compiled with ``--with-tsc``. To understand
	the output of this dump, read :file:`Python/ceval.c` in the Python sources.

	"""
	pass