diff options
author | Georg Brandl <georg@python.org> | 2009-09-01 08:13:16 (GMT) |
---|---|---|
committer | Georg Brandl <georg@python.org> | 2009-09-01 08:13:16 (GMT) |
commit | 7baf625bab07456074a0ef9c8493ea1ed72c338e (patch) | |
tree | ba30d134b7fedcd126de9e935872e34561ad7767 /Doc/tutorial | |
parent | 2686039b761e061c4ba9edd8666092a2643a65de (diff) | |
download | cpython-7baf625bab07456074a0ef9c8493ea1ed72c338e.zip cpython-7baf625bab07456074a0ef9c8493ea1ed72c338e.tar.gz cpython-7baf625bab07456074a0ef9c8493ea1ed72c338e.tar.bz2 |
Merged revisions 74613,74615,74619-74620,74622 via svnmerge from
svn+ssh://svn.python.org/python/branches/py3k
................
r74613 | georg.brandl | 2009-09-01 09:34:27 +0200 (Di, 01 Sep 2009) | 1 line
#6814: remove traces of xrange().
................
r74615 | georg.brandl | 2009-09-01 09:42:40 +0200 (Di, 01 Sep 2009) | 9 lines
Recorded merge of revisions 74614 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r74614 | georg.brandl | 2009-09-01 09:40:54 +0200 (Di, 01 Sep 2009) | 1 line
#6813: better documentation for numberless string formats.
........
................
r74619 | georg.brandl | 2009-09-01 10:02:03 +0200 (Di, 01 Sep 2009) | 1 line
#6754: remove old struct member nb_inplace_divide.
................
r74620 | georg.brandl | 2009-09-01 10:03:26 +0200 (Di, 01 Sep 2009) | 1 line
#6732: fix return value of module init function in example.
................
r74622 | georg.brandl | 2009-09-01 10:11:14 +0200 (Di, 01 Sep 2009) | 73 lines
Merged revisions 74542,74544-74548,74550,74554-74555,74578,74588,74590,74603,74616-74618,74621 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r74542 | georg.brandl | 2009-08-23 23:28:56 +0200 (So, 23 Aug 2009) | 1 line
Restore alphabetic order.
........
r74544 | georg.brandl | 2009-08-24 19:12:30 +0200 (Mo, 24 Aug 2009) | 1 line
#6775: fix python.org URLs in README.
........
r74545 | georg.brandl | 2009-08-24 19:14:29 +0200 (Mo, 24 Aug 2009) | 1 line
#6772: mention utf-8 as utf8 alias.
........
r74546 | georg.brandl | 2009-08-24 19:20:40 +0200 (Mo, 24 Aug 2009) | 1 line
#6725: spell "namespace" consistently.
........
r74547 | georg.brandl | 2009-08-24 19:22:05 +0200 (Mo, 24 Aug 2009) | 1 line
#6718: fix example.
........
r74548 | georg.brandl | 2009-08-24 19:24:27 +0200 (Mo, 24 Aug 2009) | 1 line
#6677: mention "deleting" as an alias for removing files.
........
r74550 | georg.brandl | 2009-08-24 19:48:40 +0200 (Mo, 24 Aug 2009) | 1 line
#6677: note that rmdir only removes empty directories.
........
r74554 | georg.brandl | 2009-08-27 20:59:02 +0200 (Do, 27 Aug 2009) | 1 line
Typo fix.
........
r74555 | georg.brandl | 2009-08-27 21:02:43 +0200 (Do, 27 Aug 2009) | 1 line
#6787: reference fix.
........
r74578 | tarek.ziade | 2009-08-29 15:33:21 +0200 (Sa, 29 Aug 2009) | 1 line
fixed #6801: symmetric_difference_update also accepts pipe
........
r74588 | georg.brandl | 2009-08-30 10:35:01 +0200 (So, 30 Aug 2009) | 1 line
#6803: fix old name.
........
r74590 | georg.brandl | 2009-08-30 13:51:53 +0200 (So, 30 Aug 2009) | 1 line
#6801: fix copy-paste oversight.
........
r74603 | georg.brandl | 2009-08-31 08:38:29 +0200 (Mo, 31 Aug 2009) | 1 line
other -> others where multiple arguments are accepted.
........
r74616 | georg.brandl | 2009-09-01 09:46:26 +0200 (Di, 01 Sep 2009) | 1 line
#6808: clarification.
........
r74617 | georg.brandl | 2009-09-01 09:53:37 +0200 (Di, 01 Sep 2009) | 1 line
#6765: hint that log(x, base) is not very sophisticated.
........
r74618 | georg.brandl | 2009-09-01 10:00:47 +0200 (Di, 01 Sep 2009) | 1 line
#6810: add a link to the section about frame objects instead of just a description where to find it.
........
r74621 | georg.brandl | 2009-09-01 10:06:03 +0200 (Di, 01 Sep 2009) | 1 line
#6638: fix wrong parameter name and markup a class.
........
................
Diffstat (limited to 'Doc/tutorial')
-rw-r--r-- | Doc/tutorial/classes.rst | 12 | ||||
-rw-r--r-- | Doc/tutorial/inputoutput.rst | 15 |
2 files changed, 18 insertions, 9 deletions
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst index 7ef4153..4e166d1 100644 --- a/Doc/tutorial/classes.rst +++ b/Doc/tutorial/classes.rst @@ -51,8 +51,8 @@ need for two different argument passing mechanisms as in Pascal. .. _tut-scopes: -Python Scopes and Name Spaces -============================= +Python Scopes and Namespaces +============================ Before introducing classes, I first have to tell you something about Python's scope rules. Class definitions play some neat tricks with namespaces, and you @@ -87,7 +87,7 @@ attributes is possible. Module attributes are writable: you can write :keyword:`del` statement. For example, ``del modname.the_answer`` will remove the attribute :attr:`the_answer` from the object named by ``modname``. -Name spaces are created at different moments and have different lifetimes. The +Namespaces are created at different moments and have different lifetimes. The namespace containing the built-in names is created when the Python interpreter starts up, and is never deleted. The global namespace for a module is created when the module definition is read in; normally, module namespaces also last @@ -381,9 +381,9 @@ data attribute, its class is searched. If the name denotes a valid class attribute that is a function object, a method object is created by packing (pointers to) the instance object and the function object just found together in an abstract object: this is the method object. When the method object is called -with an argument list, it is unpacked again, a new argument list is constructed -from the instance object and the original argument list, and the function object -is called with this new argument list. +with an argument list, a new argument list is constructed from the instance +object and the argument list, and the function object is called with this new +argument list. .. _tut-remarks: diff --git a/Doc/tutorial/inputoutput.rst b/Doc/tutorial/inputoutput.rst index 549a922..dbb56f6 100644 --- a/Doc/tutorial/inputoutput.rst +++ b/Doc/tutorial/inputoutput.rst @@ -126,12 +126,12 @@ with zeros. It understands about plus and minus signs:: Basic usage of the :meth:`str.format` method looks like this:: - >>> print('We are the {0} who say "{1}!"'.format('knights', 'Ni')) + >>> print('We are the {} who say "{}!"'.format('knights', 'Ni')) We are the knights who say "Ni!" The brackets and characters within them (called format fields) are replaced with -the objects passed into the :meth:`~str.format` method. The number in the -brackets refers to the position of the object passed into the +the objects passed into the :meth:`~str.format` method. A number in the +brackets can be used to refer to the position of the object passed into the :meth:`~str.format` method. :: >>> print('{0} and {1}'.format('spam', 'eggs')) @@ -152,6 +152,15 @@ Positional and keyword arguments can be arbitrarily combined:: other='Georg')) The story of Bill, Manfred, and Georg. +``'!a'`` (apply :func:`ascii`), ``'!s'`` (apply :func:`str`) and ``'!r'`` +(apply :func:`repr`) can be used to convert the value before it is formatted:: + + >>> import math + >>> print('The value of PI is approximately {}.'.format(math.pi)) + The value of PI is approximately 3.14159265359. + >>> print('The value of PI is approximately {!r}.'.format(math.pi)) + The value of PI is approximately 3.141592653589793. + An optional ``':'`` and format specifier can follow the field name. This allows greater control over how the value is formatted. The following example truncates Pi to three places after the decimal. |