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      O_APPEND (in module os)
O_ASYNC (in module os)
O_BINARY (in module os)
O_CLOEXEC (in module os)
O_CREAT (in module os)
O_DIRECT (in module os)
O_DIRECTORY (in module os)
O_DSYNC (in module os)
O_EVTONLY (in module os)
O_EXCL (in module os)
O_EXLOCK (in module os)
O_FSYNC (in module os)
O_NDELAY (in module os)
O_NOATIME (in module os)
O_NOCTTY (in module os)
O_NOFOLLOW (in module os)
O_NOFOLLOW_ANY (in module os)
O_NOINHERIT (in module os)
O_NONBLOCK (in module os)
O_PATH (in module os)
O_RANDOM (in module os)
O_RDONLY (in module os)
O_RDWR (in module os)
O_RSYNC (in module os)
O_SEQUENTIAL (in module os)
O_SHLOCK (in module os)
O_SHORT_LIVED (in module os)
O_SYMLINK (in module os)
O_SYNC (in module os)
O_TEMPORARY (in module os)
O_TEXT (in module os)
O_TMPFILE (in module os)
O_TRUNC (in module os)
O_WRONLY (in module os)
obj (memoryview attribute)
object, [1]
      
        asynchronous-generator
Boolean, [1]
built-in function, [1]
built-in method, [1]
bytearray, [1], [2], [3]
bytes, [1], [2]
callable, [1]
Capsule
class, [1], [2]
class instance, [1], [2]
code, [1], [2], [3]
complex
complex number, [1]
deallocation
dictionary, [1], [2], [3], [4], [5], [6], [7]
Ellipsis
file, [1]
finalization
floating point, [1], [2]
frame
frozenset, [1]
function, [1], [2], [3], [4], [5]
generator, [1], [2]
GenericAlias
immutable, [1], [2]
immutable sequence
instance, [1], [2]
instancemethod
integer, [1], [2]
io.StringIO
list, [1], [2], [3], [4], [5], [6], [7], [8]
long integer
mapping, [1], [2], [3], [4], [5]
memoryview, [1]
method, [1], [2], [3], [4], [5]
module, [1], [2]
mutable, [1], [2]
mutable sequence
None, [1], [2]
NotImplemented
numeric, [1], [2], [3], [4]
range
sequence, [1], [2], [3], [4], [5], [6], [7], [8]
set, [1], [2], [3]
set type
slice
socket
string, [1], [2]
traceback, [1], [2], [3], [4]
tuple, [1], [2], [3], [4], [5], [6]
type, [1], [2]
Union
user-defined function, [1], [2]
user-defined method
object (built-in class)
      object.__match_args__ (built-in variable)
object.__slots__ (built-in variable)
object_filenames() (distutils.ccompiler.CCompiler method)
    objects
      objobjargproc (C type)
objobjproc (C type)
obufcount() (ossaudiodev.oss_audio_device method)
obuffree() (ossaudiodev.oss_audio_device method)
    oct()
      
    octal
      octal literal
octdigits (in module string)
offset (SyntaxError attribute)
      offset_data (tarfile.TarInfo attribute)
OK (in module curses)
      ok_command() (tkinter.filedialog.LoadFileDialog method)
      ok_event() (tkinter.filedialog.FileDialog method)
OKCANCEL (in module tkinter.messagebox)
old_value (contextvars.Token attribute)
OleDLL (class in ctypes)
on_motion() (tkinter.dnd.DndHandler method)
on_release() (tkinter.dnd.DndHandler method)
onclick() (in module turtle)
ondrag() (in module turtle)
onecmd() (cmd.Cmd method)
onkey() (in module turtle)
onkeypress() (in module turtle)
onkeyrelease() (in module turtle)
onrelease() (in module turtle)
onscreenclick() (in module turtle)
ontimer() (in module turtle)
OP (in module token)
OP_ALL (in module ssl)
OP_CIPHER_SERVER_PREFERENCE (in module ssl)
OP_ENABLE_MIDDLEBOX_COMPAT (in module ssl)
OP_IGNORE_UNEXPECTED_EOF (in module ssl)
OP_NO_COMPRESSION (in module ssl)
OP_NO_RENEGOTIATION (in module ssl)
OP_NO_SSLv2 (in module ssl)
OP_NO_SSLv3 (in module ssl)
OP_NO_TICKET (in module ssl)
OP_NO_TLSv1 (in module ssl)
OP_NO_TLSv1_1 (in module ssl)
OP_NO_TLSv1_2 (in module ssl)
OP_NO_TLSv1_3 (in module ssl)
OP_SINGLE_DH_USE (in module ssl)
OP_SINGLE_ECDH_USE (in module ssl)
    open
      Open (class in tkinter.filedialog)
    open()
      open() (distutils.text_file.TextFile method)
      open_binary() (in module importlib.resources)
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      open_code() (in module io)
open_connection() (in module asyncio)
open_flags (in module dbm.gnu)
open_new() (in module webbrowser)
      open_new_tab() (in module webbrowser)
      open_osfhandle() (in module msvcrt)
open_resource() (importlib.resources.abc.ResourceReader method)
open_text() (in module importlib.resources)
open_unix_connection() (in module asyncio)
open_unknown() (urllib.request.URLopener method)
open_urlresource() (in module test.support)
OpenDatabase() (in module msilib)
OpenerDirector (class in urllib.request)
OpenKey() (in module winreg)
OpenKeyEx() (in module winreg)
openlog() (in module syslog)
openmixer() (in module ossaudiodev)
openpty() (in module os)
      
    OpenSSL
      OPENSSL_VERSION (in module ssl)
OPENSSL_VERSION_INFO (in module ssl)
OPENSSL_VERSION_NUMBER (in module ssl)
OpenView() (msilib.Database method)
    operation
      OperationalError
    operations
      
    operations on
      
    operator
      
        !=, [1]
% (percent), [1]
& (ampersand), [1]
* (asterisk), [1]
**, [1]
+ (plus), [1], [2]
- (minus), [1], [2]
/ (slash), [1]
//, [1]
< (less), [1]
<<, [1]
<=, [1]
==, [1]
> (greater), [1]
>=, [1]
>>, [1]
@ (at)
^ (caret), [1]
| (vertical bar), [1]
~ (tilde), [1]
and, [1], [2]
comparison
in, [1], [2]
is, [1]
is not, [1]
module
not, [1]
not in, [1], [2]
or, [1], [2]
overloading
precedence
ternary
operator (2to3 fixer)
operators
opmap (in module dis)
opname (in module dis)
OPT
optim_args_from_interpreter_flags() (in module test.support)
optimize (sys.flags attribute)
optimize() (in module pickletools)
OPTIMIZED_BYTECODE_SUFFIXES (in module importlib.machinery)
Option (class in optparse)
Optional (in module typing)
OptionConflictError
OptionError
OptionGroup (class in optparse)
OptionMenu (class in tkinter.tix)
OptionParser (class in optparse)
Options (class in ssl)
options (doctest.Example attribute)
      options() (configparser.ConfigParser method)
OptionValueError
optionxform() (configparser.ConfigParser method)
    optparse
      
    or
      Or (class in ast)
or_() (in module operator)
    ord
      
    ord()
      
    order
      ordered_attributes (xml.parsers.expat.xmlparser attribute)
OrderedDict (class in collections)
      orig_argv (in module sys)
origin (importlib.machinery.ModuleSpec attribute)
origin_req_host (urllib.request.Request attribute)
origin_server (wsgiref.handlers.BaseHandler attribute)
    os
      
    os.path
      os_environ (wsgiref.handlers.BaseHandler attribute)
OSError
    ossaudiodev
      OSSAudioError
    outfile
      output
      output (subprocess.CalledProcessError attribute)
      output() (http.cookies.BaseCookie method)
      output_charset (email.charset.Charset attribute)
output_codec (email.charset.Charset attribute)
output_difference() (doctest.OutputChecker method)
OutputChecker (class in doctest)
OutputString() (http.cookies.Morsel method)
OutsideDestinationError
over() (nntplib.NNTP method)
Overflow (class in decimal)
OverflowError
      overlap() (statistics.NormalDist method)
overlaps() (ipaddress.IPv4Network method)
      overlay() (curses.window method)
overload() (in module typing)
    overloading
      overwrite() (curses.window method)
owner() (pathlib.Path method)
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