Python wiki at http://wiki.python.org/moin/HowTo/Sorting.)
The ``any(iter)`` and ``all(iter)`` built-ins look at the truth values of an
-iterable's contents. :func:`any` returns True if any element in the iterable is
-a true value, and :func:`all` returns True if all of the elements are true
+iterable's contents. :func:`any` returns ``True`` if any element in the iterable is
+a true value, and :func:`all` returns ``True`` if all of the elements are true
values:
>>> any([0,1,0])
Return a formatted dump of the tree in *node*. This is mainly useful for
debugging purposes. The returned string will show the names and the values
for fields. This makes the code impossible to evaluate, so if evaluation is
- wanted *annotate_fields* must be set to False. Attributes such as line
+ wanted *annotate_fields* must be set to ``False``. Attributes such as line
numbers and column offsets are not dumped by default. If this is wanted,
*include_attributes* can be set to ``True``.
.. method:: user_line(frame)
This method is called from :meth:`dispatch_line` when either
- :meth:`stop_here` or :meth:`break_here` yields True.
+ :meth:`stop_here` or :meth:`break_here` yields ``True``.
.. method:: user_return(frame, return_value)
This method is called from :meth:`dispatch_return` when :meth:`stop_here`
- yields True.
+ yields ``True``.
.. method:: user_exception(frame, exc_info)
This method is called from :meth:`dispatch_exception` when
- :meth:`stop_here` yields True.
+ :meth:`stop_here` yields ``True``.
.. method:: do_clear(arg)
.. method:: set_quit()
- Set the :attr:`quitting` attribute to True. This raises :exc:`BdbQuit` in
+ Set the :attr:`quitting` attribute to ``True``. This raises :exc:`BdbQuit` in
the next call to one of the :meth:`dispatch_\*` methods.
Netscape and RFC 2965 cookies. By default, RFC 2109 cookies (ie. cookies
received in a :mailheader:`Set-Cookie` header with a version cookie-attribute of
1) are treated according to the RFC 2965 rules. However, if RFC 2965 handling
- is turned off or :attr:`rfc2109_as_netscape` is True, RFC 2109 cookies are
+ is turned off or :attr:`rfc2109_as_netscape` is ``True``, RFC 2109 cookies are
'downgraded' by the :class:`CookieJar` instance to Netscape cookies, by
setting the :attr:`version` attribute of the :class:`Cookie` instance to 0.
:class:`DefaultCookiePolicy` also provides some parameters to allow some
.. attribute:: Cookie.secure
- True if cookie should only be returned over a secure connection.
+ ``True`` if cookie should only be returned over a secure connection.
.. attribute:: Cookie.expires
.. attribute:: Cookie.discard
- True if this is a session cookie.
+ ``True`` if this is a session cookie.
.. attribute:: Cookie.comment
.. attribute:: Cookie.rfc2109
- True if this cookie was received as an RFC 2109 cookie (ie. the cookie
+ ``True`` if this cookie was received as an RFC 2109 cookie (ie. the cookie
arrived in a :mailheader:`Set-Cookie` header, and the value of the Version
cookie-attribute in that header was 1). This attribute is provided because
:mod:`cookielib` may 'downgrade' RFC 2109 cookies to Netscape cookies, in
.. attribute:: Cookie.port_specified
- True if a port or set of ports was explicitly specified by the server (in the
+ ``True`` if a port or set of ports was explicitly specified by the server (in the
:mailheader:`Set-Cookie` / :mailheader:`Set-Cookie2` header).
.. attribute:: Cookie.domain_specified
- True if a domain was explicitly specified by the server.
+ ``True`` if a domain was explicitly specified by the server.
.. attribute:: Cookie.domain_initial_dot
- True if the domain explicitly specified by the server began with a dot
+ ``True`` if the domain explicitly specified by the server began with a dot
(``'.'``).
Cookies may have additional non-standard cookie-attributes. These may be
.. method:: Cookie.is_expired([now=None])
- True if cookie has passed the time at which the server requested it should
+ ``True`` if cookie has passed the time at which the server requested it should
expire. If *now* is given (in seconds since the epoch), return whether the
cookie has expired at the specified time.
.. class:: c_bool
Represent the C :c:type:`bool` datatype (more accurately, :c:type:`_Bool` from
- C99). Its value can be True or False, and the constructor accepts any object
+ C99). Its value can be ``True`` or ``False``, and the constructor accepts any object
that has a truth value.
.. versionadded:: 2.6
Return ``True`` if the message's payload is a list of sub-\
:class:`Message` objects, otherwise return ``False``. When
- :meth:`is_multipart` returns False, the payload should be a string object.
+ :meth:`is_multipart` returns ``False``, the payload should be a string object.
.. method:: set_unixfrom(unixfrom)
.. function:: all(iterable)
- Return True if all elements of the *iterable* are true (or if the iterable
+ Return ``True`` if all elements of the *iterable* are true (or if the iterable
is empty). Equivalent to::
def all(iterable):
.. function:: any(iterable)
- Return True if any element of the *iterable* is true. If the iterable
- is empty, return False. Equivalent to::
+ Return ``True`` if any element of the *iterable* is true. If the iterable
+ is empty, return ``False``. Equivalent to::
def any(iterable):
for element in iterable:
.. function:: is_tracked(obj)
- Returns True if the object is currently tracked by the garbage collector,
- False otherwise. As a general rule, instances of atomic types aren't
+ Returns ``True`` if the object is currently tracked by the garbage collector,
+ ``False`` otherwise. As a general rule, instances of atomic types aren't
tracked and instances of non-atomic types (containers, user-defined
objects...) are. However, some type-specific optimizations can be present
in order to suppress the garbage collector footprint of simple instances
.. method:: readable()
- Return ``True`` if the stream can be read from. If False, :meth:`read`
+ Return ``True`` if the stream can be read from. If ``False``, :meth:`read`
will raise :exc:`IOError`.
.. method:: readline(limit=-1)
:func:`compress` data, selectors (d[0] if s[0]), (d[1] if s[1]), ... ``compress('ABCDEF', [1,0,1,0,1,1]) --> A C E F``
:func:`dropwhile` pred, seq seq[n], seq[n+1], starting when pred fails ``dropwhile(lambda x: x<5, [1,4,6,4,1]) --> 6 4 1``
:func:`groupby` iterable[, keyfunc] sub-iterators grouped by value of keyfunc(v)
-:func:`ifilter` pred, seq elements of seq where pred(elem) is True ``ifilter(lambda x: x%2, range(10)) --> 1 3 5 7 9``
-:func:`ifilterfalse` pred, seq elements of seq where pred(elem) is False ``ifilterfalse(lambda x: x%2, range(10)) --> 0 2 4 6 8``
+:func:`ifilter` pred, seq elements of seq where pred(elem) is true ``ifilter(lambda x: x%2, range(10)) --> 1 3 5 7 9``
+:func:`ifilterfalse` pred, seq elements of seq where pred(elem) is false ``ifilterfalse(lambda x: x%2, range(10)) --> 0 2 4 6 8``
:func:`islice` seq, [start,] stop [, step] elements from seq[start:stop:step] ``islice('ABCDEFG', 2, None) --> C D E F G``
:func:`imap` func, p, q, ... func(p0, q0), func(p1, q1), ... ``imap(pow, (2,3,10), (5,2,3)) --> 32 9 1000``
:func:`starmap` func, seq func(\*seq[0]), func(\*seq[1]), ... ``starmap(pow, [(2,5), (3,2), (10,3)]) --> 32 9 1000``
.. versionadded:: 1.5.2
.. versionchanged:: 2.3
- If :func:`os.stat_float_times` returns True, the result is a floating point
+ If :func:`os.stat_float_times` returns ``True``, the result is a floating point
number.
.. versionadded:: 1.5.2
.. versionchanged:: 2.3
- If :func:`os.stat_float_times` returns True, the result is a floating point
+ If :func:`os.stat_float_times` returns ``True``, the result is a floating point
number.
.. data:: supports_unicode_filenames
- True if arbitrary Unicode strings can be used as file names (within limitations
+ ``True`` if arbitrary Unicode strings can be used as file names (within limitations
imposed by the file system).
.. versionadded:: 2.3
.. function:: enable_callback_tracebacks(flag)
By default you will not get any tracebacks in user-defined functions,
- aggregates, converters, authorizer callbacks etc. If you want to debug them, you
- can call this function with *flag* as True. Afterwards, you will get tracebacks
- from callbacks on ``sys.stderr``. Use :const:`False` to disable the feature
- again.
+ aggregates, converters, authorizer callbacks etc. If you want to debug them,
+ you can call this function with *flag* set to ``True``. Afterwards, you will
+ get tracebacks from callbacks on ``sys.stderr``. Use :const:`False` to
+ disable the feature again.
.. _sqlite3-connection-objects:
.. function:: RAND_status()
- Returns True if the SSL pseudo-random number generator has been seeded with
+ Returns ``True`` if the SSL pseudo-random number generator has been seeded with
'enough' randomness, and False otherwise. You can use :func:`ssl.RAND_egd`
and :func:`ssl.RAND_add` to increase the randomness of the pseudo-random
number generator.
.. method:: isdisjoint(other)
- Return True if the set has no elements in common with *other*. Sets are
+ Return ``True`` if the set has no elements in common with *other*. Sets are
disjoint if and only if their intersection is the empty set.
.. versionadded:: 2.6
For the ``'?'`` format character, the return value is either :const:`True` or
:const:`False`. When packing, the truth value of the argument object is used.
Either 0 or 1 in the native or standard bool representation will be packed, and
-any non-zero value will be True when unpacking.
+any non-zero value will be ``True`` when unpacking.
.. method:: instate(statespec, callback=None, *args, **kw)
- Test the widget's state. If a callback is not specified, returns True
- if the widget state matches *statespec* and False otherwise. If callback
+ Test the widget's state. If a callback is not specified, returns ``True``
+ if the widget state matches *statespec* and ``False`` otherwise. If callback
is specified then it is called with *args* if widget state matches
*statespec*.
.. method:: exists(item)
- Returns True if the specified *item* is present in the tree.
+ Returns ``True`` if the specified *item* is present in the tree.
.. method:: focus([item=None])
Ensure that *item* is visible.
- Sets all of *item*'s ancestors open option to True, and scrolls the
+ Sets all of *item*'s ancestors open option to ``True``, and scrolls the
widget if necessary so that *item* is within the visible portion of
the tree.
Write text - the string representation of *arg* - at the current turtle
position according to *align* ("left", "center" or right") and with the given
- font. If *move* is True, the pen is moved to the bottom-right corner of the
- text. By default, *move* is False.
+ font. If *move* is true, the pen is moved to the bottom-right corner of the
+ text. By default, *move* is ``False``.
>>> turtle.write("Home = ", True, align="center")
>>> turtle.write((0,0), True)
.. function:: isvisible()
- Return True if the Turtle is shown, False if it's hidden.
+ Return ``True`` if the Turtle is shown, ``False`` if it's hidden.
>>> turtle.hideturtle()
>>> turtle.isvisible()
should be the request-host of the request for the page containing the image.
*unverifiable* should indicate whether the request is unverifiable, as defined
- by RFC 2965. It defaults to False. An unverifiable request is one whose URL
+ by RFC 2965. It defaults to ``False``. An unverifiable request is one whose URL
the user did not have the option to approve. For example, if the request is for
an image in an HTML document, and the user had no option to approve the
automatic fetching of the image, this should be true.
.. method:: is_package(fullname)
- Return True if the module specified by *fullname* is a package. Raise
+ Return ``True`` if the module specified by *fullname* is a package. Raise
:exc:`ZipImportError` if the module couldn't be found.
single: True
These represent the truth values False and True. The two objects
- representing the values False and True are the only Boolean objects.
+ representing the values ``False`` and ``True`` are the only Boolean objects.
The Boolean type is a subtype of plain integers, and Boolean values
behave like the values 0 and 1, respectively, in almost all contexts,
the exception being that when converted to a string, the strings
- Issue #19085: Added basic tests for all tkinter widget options.
+Documentation
+-------------
+
+- Issue #19795: Improved markup of True/False constants.
+
Whats' New in Python 2.7.6?
===========================
projects / python / commitdiff