Merge string formatting doc fixes from 3.5
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@ -839,7 +839,7 @@ How do I convert a number to a string?
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To convert, e.g., the number 144 to the string '144', use the built-in type
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constructor :func:`str`. If you want a hexadecimal or octal representation, use
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the built-in functions :func:`hex` or :func:`oct`. For fancy formatting, see
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the :ref:`string-formatting` section, e.g. ``"{:04d}".format(144)`` yields
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the :ref:`formatstrings` section, e.g. ``"{:04d}".format(144)`` yields
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``'0144'`` and ``"{:.3f}".format(1.0/3.0)`` yields ``'0.333'``.
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@ -604,7 +604,7 @@ Instance methods:
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.. method:: date.__format__(format)
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Same as :meth:`.date.strftime`. This makes it possible to specify format
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Same as :meth:`.date.strftime`. This makes it possible to specify a format
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string for a :class:`.date` object when using :meth:`str.format`. For a
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complete list of formatting directives, see
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:ref:`strftime-strptime-behavior`.
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@ -1179,7 +1179,7 @@ Instance methods:
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.. method:: datetime.__format__(format)
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Same as :meth:`.datetime.strftime`. This makes it possible to specify format
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Same as :meth:`.datetime.strftime`. This makes it possible to specify a format
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string for a :class:`.datetime` object when using :meth:`str.format`. For a
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complete list of formatting directives, see
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:ref:`strftime-strptime-behavior`.
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@ -1424,7 +1424,7 @@ Instance methods:
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.. method:: time.__format__(format)
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Same as :meth:`.time.strftime`. This makes it possible to specify format string
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Same as :meth:`.time.strftime`. This makes it possible to specify a format string
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for a :class:`.time` object when using :meth:`str.format`. For a
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complete list of formatting directives, see
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:ref:`strftime-strptime-behavior`.
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@ -555,12 +555,12 @@ Some rules:
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3. When another data type is mixed in, the :attr:`value` attribute is *not the
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same* as the enum member itself, although it is equivalent and will compare
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equal.
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4. %-style formatting: `%s` and `%r` call :class:`Enum`'s :meth:`__str__` and
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:meth:`__repr__` respectively; other codes (such as `%i` or `%h` for
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IntEnum) treat the enum member as its mixed-in type.
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5. :meth:`str.__format__` (or :func:`format`) will use the mixed-in
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type's :meth:`__format__`. If the :class:`Enum`'s :func:`str` or
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:func:`repr` is desired use the `!s` or `!r` :class:`str` format codes.
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4. %-style formatting: `%s` and `%r` call the :class:`Enum` class's
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:meth:`__str__` and :meth:`__repr__` respectively; other codes (such as
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`%i` or `%h` for IntEnum) treat the enum member as its mixed-in type.
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5. :meth:`str.format` (or :func:`format`) will use the mixed-in
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type's :meth:`__format__`. If the :class:`Enum` class's :func:`str` or
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:func:`repr` is desired, use the `!s` or `!r` format codes.
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Interesting examples
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@ -197,7 +197,7 @@ are converted to strings. The default implementation uses the internals of the
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the current presentation context (direct and indirect containers for *object*
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that are affecting the presentation) as the keys; if an object needs to be
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presented which is already represented in *context*, the third return value
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should be ``True``. Recursive calls to the :meth:`format` method should add
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should be ``True``. Recursive calls to the :meth:`.format` method should add
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additional entries for containers to this dictionary. The third argument,
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*maxlevels*, gives the requested limit to recursion; this will be ``0`` if there
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is no requested limit. This argument should be passed unmodified to recursive
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@ -1450,7 +1450,7 @@ multiple fragments.
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For more information on the ``str`` class and its methods, see
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:ref:`textseq` and the :ref:`string-methods` section below. To output
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formatted strings, see the :ref:`string-formatting` section. In addition,
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formatted strings, see the :ref:`formatstrings` section. In addition,
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see the :ref:`stringservices` section.
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@ -75,14 +75,14 @@ The constants defined in this module are:
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.. _string-formatting:
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String Formatting
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-----------------
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Custom String Formatting
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------------------------
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The built-in string class provides the ability to do complex variable
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substitutions and value formatting via the :func:`format` method described in
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substitutions and value formatting via the :meth:`~str.format` method described in
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:pep:`3101`. The :class:`Formatter` class in the :mod:`string` module allows
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you to create and customize your own string formatting behaviors using the same
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implementation as the built-in :meth:`format` method.
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implementation as the built-in :meth:`~str.format` method.
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.. class:: Formatter
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@ -91,9 +91,9 @@ implementation as the built-in :meth:`format` method.
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.. method:: format(format_string, *args, **kwargs)
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:meth:`format` is the primary API method. It takes a format string and
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The primary API method. It takes a format string and
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an arbitrary set of positional and keyword arguments.
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:meth:`format` is just a wrapper that calls :meth:`vformat`.
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It is just a wrapper that calls :meth:`vformat`.
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.. deprecated:: 3.5
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Passing a format string as keyword argument *format_string* has been
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@ -267,8 +267,9 @@ Most built-in types support a common formatting mini-language, which is
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described in the next section.
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A *format_spec* field can also include nested replacement fields within it.
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These nested replacement fields can contain only a field name; conversion flags
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and format specifications are not allowed. The replacement fields within the
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These nested replacement fields may contain a field name, conversion flag
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and format specification, but deeper nesting is
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not allowed. The replacement fields within the
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format_spec are substituted before the *format_spec* string is interpreted.
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This allows the formatting of a value to be dynamically specified.
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@ -306,8 +307,10 @@ The general form of a *standard format specifier* is:
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If a valid *align* value is specified, it can be preceded by a *fill*
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character that can be any character and defaults to a space if omitted.
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Note that it is not possible to use ``{`` and ``}`` as *fill* char while
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using the :meth:`str.format` method; this limitation however doesn't
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It is not possible to use a literal curly brace ("``{``" or "``}``") as
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the *fill* character when using the :meth:`str.format`
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method. However, it is possible to insert a curly brace
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with a nested replacement field. This limitation doesn't
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affect the :func:`format` function.
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The meaning of the various alignment options is as follows:
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@ -496,8 +499,8 @@ The available presentation types for floating point and decimal values are:
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Format examples
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^^^^^^^^^^^^^^^
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This section contains examples of the new format syntax and comparison with
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the old ``%``-formatting.
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This section contains examples of the :meth:`str.format` syntax and
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comparison with the old ``%``-formatting.
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In most of the cases the syntax is similar to the old ``%``-formatting, with the
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addition of the ``{}`` and with ``:`` used instead of ``%``.
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@ -620,7 +620,7 @@ Traceback
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*limit* is set, only format the *limit* most recent frames.
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Similar to the :func:`traceback.format_tb` function, except that
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:meth:`format` does not include newlines.
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:meth:`.format` does not include newlines.
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Example::
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@ -82,7 +82,7 @@ howto/pyporting,,::,Programming Language :: Python :: 2
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howto/pyporting,,::,Programming Language :: Python :: 3
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howto/regex,,::,
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howto/regex,,:foo,(?:foo)
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howto/urllib2,,:example,"for example ""joe@password:example.com"""
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howto/urllib2,,:password,"for example ""joe:password@example.com"""
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library/audioop,,:ipos,"# factor = audioop.findfactor(in_test[ipos*2:ipos*2+len(out_test)],"
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library/bisect,32,:hi,all(val >= x for val in a[i:hi])
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library/bisect,42,:hi,all(val > x for val in a[i:hi])
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@ -352,9 +352,8 @@ The built-in function :func:`len` returns the length of a string::
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Strings support a large number of methods for
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basic transformations and searching.
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:ref:`string-formatting`
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Information about string formatting with :meth:`str.format` is described
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here.
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:ref:`formatstrings`
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Information about string formatting with :meth:`str.format`.
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:ref:`old-string-formatting`
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The old formatting operations invoked when strings and Unicode strings are
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