#2762: remove 2.x remnants and patch up some new documentation.

This commit is contained in:
Georg Brandl 2008-05-05 21:42:51 +00:00
parent 7694100e4b
commit e06de8b3cc
6 changed files with 33 additions and 53 deletions

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@ -209,15 +209,15 @@ are always available. They are listed here in alphabetical order.
case, expression statements that evaluate to something else than
``None`` will be printed).
The optional arguments *flags* and *dont_inherit* (which are new in Python 2.2)
control which future statements (see :pep:`236`) affect the compilation of
*source*. If neither is present (or both are zero) the code is compiled with
those future statements that are in effect in the code that is calling compile.
If the *flags* argument is given and *dont_inherit* is not (or is zero) then the
The optional arguments *flags* and *dont_inherit* control which future
statements (see :pep:`236`) affect the compilation of *source*. If neither
is present (or both are zero) the code is compiled with those future
statements that are in effect in the code that is calling compile. If the
*flags* argument is given and *dont_inherit* is not (or is zero) then the
future statements specified by the *flags* argument are used in addition to
those that would be used anyway. If *dont_inherit* is a non-zero integer then
the *flags* argument is it -- the future statements in effect around the call to
compile are ignored.
the *flags* argument is it -- the future statements in effect around the call
to compile are ignored.
Future statements are specified by bits which can be bitwise ORed together to
specify multiple statements. The bitfield required to specify a given feature
@ -813,19 +813,14 @@ are always available. They are listed here in alphabetical order.
modulo *z* (computed more efficiently than ``pow(x, y) % z``). The two-argument
form ``pow(x, y)`` is equivalent to using the power operator: ``x**y``.
The arguments must have numeric types. With mixed operand types, the coercion
rules for binary arithmetic operators apply. For :class:`int` operands, the
result has the same type as the operands (after coercion) unless the second
argument is negative; in that case, all arguments are converted to float and a
float result is delivered. For example, ``10**2`` returns ``100``, but
``10**-2`` returns ``0.01``. (This last feature was added in Python 2.2. In
Python 2.1 and before, if both arguments were of integer types and the second
argument was negative, an exception was raised.) If the second argument is
negative, the third argument must be omitted. If *z* is present, *x* and *y*
must be of integer types, and *y* must be non-negative. (This restriction was
added in Python 2.2. In Python 2.1 and before, floating 3-argument ``pow()``
returned platform-dependent results depending on floating-point rounding
accidents.)
The arguments must have numeric types. With mixed operand types, the
coercion rules for binary arithmetic operators apply. For :class:`int`
operands, the result has the same type as the operands (after coercion)
unless the second argument is negative; in that case, all arguments are
converted to float and a float result is delivered. For example, ``10**2``
returns ``100``, but ``10**-2`` returns ``0.01``. If the second argument is
negative, the third argument must be omitted. If *z* is present, *x* and *y*
must be of integer types, and *y* must be non-negative.
.. function:: print([object, ...][, sep=' '][, end='\n'][, file=sys.stdout])

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@ -334,12 +334,6 @@ Additional information on exceptions can be found in section :ref:`exceptions`,
and information on using the :keyword:`raise` statement to generate exceptions
may be found in section :ref:`raise`.
.. seealso::
:pep:`3110` - Catching exceptions in Python 3000
Describes the differences in :keyword:`try` statements between Python 2.x
and 3.0.
.. _with:
.. _as:
@ -390,11 +384,6 @@ The execution of the :keyword:`with` statement proceeds as follows:
value from :meth:`__exit__` is ignored, and execution proceeds at the normal
location for the kind of exit that was taken.
In Python 2.5, the :keyword:`with` statement is only allowed when the
``with_statement`` feature has been enabled. It is always enabled in
Python 2.6.
.. seealso::
:pep:`0343` - The "with" statement

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@ -510,10 +510,6 @@ Callable types
An instance method object combines a class, a class instance and any
callable object (normally a user-defined function).
.. versionchanged:: 2.6
For 3.0 forward-compatibility, :attr:`im_func` is also available as
:attr:`__func__`, and :attr:`im_self` as :attr:`__self__`.
.. index::
single: __func__ (method attribute)
single: __self__ (method attribute)

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@ -270,16 +270,20 @@ Identifiers and keywords
.. index:: identifier, name
Identifiers (also referred to as *names*) are described by the following lexical
definitions:
definitions.
The syntax of identifiers in Python is based on the Unicode standard annex
UAX-31, with elaboration and changes as defined below.
UAX-31, with elaboration and changes as defined below; see also :pep:`3131` for
further details.
Within the ASCII range (U+0001..U+007F), the valid characters for identifiers
are the same as in Python 2.5; Python 3.0 introduces additional
characters from outside the ASCII range (see :pep:`3131`). For other
characters, the classification uses the version of the Unicode Character
Database as included in the :mod:`unicodedata` module.
are the same as in Python 2.x: the uppercase and lowercase letters ``A`` through
``Z``, the underscore ``_`` and, except for the first character, the digits
``0`` through ``9``.
Python 3.0 introduces additional characters from outside the ASCII range (see
:pep:`3131`). For these characters, the classification uses the version of the
Unicode Character Database as included in the :mod:`unicodedata` module.
Identifiers are unlimited in length. Case is significant.
@ -308,7 +312,6 @@ A non-normative HTML file listing all valid identifier characters for Unicode
4.1 can be found at
http://www.dcl.hpi.uni-potsdam.de/home/loewis/table-3131.html.
See :pep:`3131` for further details.
.. _keywords:

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@ -480,7 +480,7 @@ The :keyword:`raise` statement
pair: raising; exception
.. productionlist::
raise_stmt: "raise" [`expression` ["," `expression` ["," `expression`]]]
raise_stmt: "raise" [`expression` ["from" `expression`]]
If no expressions are present, :keyword:`raise` re-raises the last exception
that was active in the current scope. If no exception is active in the current
@ -498,24 +498,20 @@ The :dfn:`type` of the exception is the exception instance's class, the
.. index:: object: traceback
A traceback object is normally created automatically when an exception is raised
and attached to it as the :attr:`__traceback__` attribute; however, you can set
your own traceback using the :meth:`with_traceback` exception method, like so::
and attached to it as the :attr:`__traceback__` attribute, which is writable.
You can create an exception and set your own traceback in one step using the
:meth:`with_traceback` exception method (which returns the same exception
instance, with its traceback set to its argument), like so::
raise RuntimeError("foo occurred").with_traceback(tracebackobj)
.. XXX document exception chaining
.. XXX document exception chaining
The "from" clause is used for exception chaining, which is not documented yet.
Additional information on exceptions can be found in section :ref:`exceptions`,
and information about handling exceptions is in section :ref:`try`.
.. seealso::
:pep:`3109` - Raising exceptions in Python 3000
Describes the differences in :keyword:`raise` statements between Python
2.x and 3.0.
.. _break:

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@ -232,7 +232,8 @@ Exception Stuff
* PEP 3109: Raising exceptions. You must now use ``raise Exception(args)``
instead of ``raise Exception, args``.
* PEP 3110: Catching exceptions.
* PEP 3110: Catching exceptions. You must now use ``except SomeException as
identifier:`` instead of ``except Exception, identifier:``
* PEP 3134: Exception chaining. (The :attr:`__context__` feature from the PEP
hasn't been implemented yet in 3.0a2.)