mirror of https://github.com/python/cpython
describe more 1.3 changes
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Guido van Rossum
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Doc/tut.tex
151
Doc/tut.tex
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@ -3537,7 +3537,7 @@ This chapter describes yet more recent additions to the Python
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language and library.
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\section{New Keyword Arguments}
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\section{Keyword Arguments}
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Functions and methods written in Python can now be called using
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keyword arguments of the form \code{\var{keyword} = \var{value}}. For
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@ -3639,9 +3639,73 @@ reduced by a third.
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\item
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The format of \code{.pyc} files has changed (again).
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\item
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The \code{access} statement has been disabled. The syntax is still
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recognized but no code is generated for it. (There were some
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unpleasant interactions with changes for keyword arguments, and my
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plan is to get rid of \code{access} altogether in favor of a different
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approach.)
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\end{itemize}
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\section{Minor Changes}
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\section{Changes to the WWW and Internet tools}
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\begin{itemize}
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\item
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The \code{htmllib} module has been rewritten in an incompatible
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fashion. The new version is considerably more complete (HTML 2.0
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except forms, but including all ISO-8859-1 entity definitions), and
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easy to use. Small changes to \code{sgmllib} have also been made, to
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better match the tokenization of HTML as recognized by other web
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tools.
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\item
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A new module \code{formatter} has been added, for use with the new
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\code{htmllib} module.
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\item
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The \code{urllib}and \code{httplib} modules have been changed somewhat
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to allow overriding unknown URL types and to support authentication.
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They now use \code{mimetools.Message} instead of \code{rfc822.Message}
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to parse headers. The \code{endrequest()} method has been removed
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from the HTTP class since it breaks the interaction with some servers.
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\item
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The \code{rfc822.Message} class has been changed to allow a flag to be
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passed in that says that the file is unseekable.
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\item
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The \code{ftplib} module has been fixed to be (hopefully) more robust
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on Linux.
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\item
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Several new operations that are optionally supported by servers have
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been added to \code{nntplib}: \code{xover}, \code{xgtitle},
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\code{xpath} and \code{date}. % thanks to Kevan Heydon
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\end{itemize}
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\section{Other Language Changes}
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\begin{itemize}
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\item
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The \code{raise} statement now takes an optional argument which
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specifies the traceback to be used when printing the exception's stack
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trace. This must be a traceback object, such as found in
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\code{sys.exc_traceback}. When omitted or given as \code{None}, the
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old behavior (to generate a stack trace entry for the current stack
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frame) is used.
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\item
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The tokenizer is now more tolerant of alien whitespace. Control-L in
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the leading whitespace of a line resets the column number to zero,
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while Control-R just before the end of the line is ignored.
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\end{itemize}
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\section{Changes to Built-in Operations}
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\begin{itemize}
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@ -3671,26 +3735,6 @@ variables, respectively. (These augment rather than replace
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without an argument, and a module's global variables when called with
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an argument of type module.)
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\item
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The optional built-in modules \code{dbm} and \code{gdbm} are more
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coordinated --- their \code{open()} functions now take the same values
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for their \var{flag} argument, and the \var{flag} and \var{mode}
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argument have default values (to open the database for reading only,
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and to create the database with mode \code{0666} minuse the umask,
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respectively).
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\item
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A new dbm-like module, \code{dbhash}, has been added, which uses the
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BSD DB package's hash method.
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\item
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The \code{raise} statement now takes an optional argument which
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specifies the traceback to be used when printing the exception's stack
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trace. This must be a traceback object, such as found in
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\code{sys.exc_traceback}. When omitted or given as \code{None}, the
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old behavior (to generate a stack trace entry for the current stack
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frame) is used.
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\item
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The built-in function \code{compile()} now takes a third possible
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value for the kind of code to be compiled: specifying \code{'single'}
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@ -3698,10 +3742,64 @@ generates code for a single interactive statement, which prints the
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output of expression statements that evaluate to something else than
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\code{None}.
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\end{itemize}
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\section{Library Changes}
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\begin{itemize}
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\item
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The tokenizer is now more tolerant of alien whitespace. Control-L in
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the leading whitespace of a line resets the column number to zero,
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while Control-R just before the end of the line is ignored.
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The \code{string.split()} and \code{string.splitfields()} functions
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are now the same function (the presence or absence of the second
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argument determines which operation is invoked); similar for
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\code{string.join()} and \code{string.joinfields()}.
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\item
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The \code{Tkinter} module and its helper \code{Dialog} have been
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revamped to use keyword arguments. Tk 4.0 is now the standard. A new
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module \code{FileDialog} has been added which implements standard file
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selection dialogs.
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\item
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The optional built-in modules \code{dbm} and \code{gdbm} are more
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coordinated --- their \code{open()} functions now take the same values
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for their \var{flag} argument, and the \var{flag} and \var{mode}
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argument have default values (to open the database for reading only,
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and to create the database with mode \code{0666} minuse the umask,
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respectively). The memory leaks have finally been fixed.
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\item
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A new dbm-like module, \code{bsddb}, has been added, which uses the
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BSD DB package's hash method. % thanks to David Ely
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\item
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A portable (though slow) dbm-clone, implemented in Python, has been
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added for systems where none of the above is provided. It is aptly
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dubbed \code{dumbdbm}.
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\item
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The module \code{anydbm} provides a unified interface to \code{bsddb},
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\code{gdbm}, \code{dbm}, and \code{dumbdbm}, choosing the first one
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available.
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\item
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A new extension module, \code{binascii}, provides a variety of
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operations for conversion of text-encoded binary data.
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\item
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There are three new or rewritten companion modules implemented in
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Python that can encode and decode the most common such formats:
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\code{uu} (uuencode), \code{base64} and \code{binhex}.
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\item
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A module to handle the MIME encoding quoted-printable has also been
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added: \code{quopri}.
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\end{itemize}
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\section{Other Changes}
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\begin{itemize}
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\item
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The dynamic module loader recognizes the fact that different filenames
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@ -3714,6 +3812,9 @@ Jim Fulton's ``abstract object interface'' has been incorporated into
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the run-time API. For more detailes, read the files
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\code{Include/abstract.h} and \code{Objects/abstract.c}.
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\item
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The Macintosh version is much more robust now.
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\item
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Numerous things I have forgotten or that are so obscure no-one will
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notice them anyway :-)
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|
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151
Doc/tut/tut.tex
151
Doc/tut/tut.tex
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@ -3537,7 +3537,7 @@ This chapter describes yet more recent additions to the Python
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language and library.
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\section{New Keyword Arguments}
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\section{Keyword Arguments}
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Functions and methods written in Python can now be called using
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keyword arguments of the form \code{\var{keyword} = \var{value}}. For
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@ -3639,9 +3639,73 @@ reduced by a third.
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\item
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The format of \code{.pyc} files has changed (again).
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\item
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The \code{access} statement has been disabled. The syntax is still
|
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recognized but no code is generated for it. (There were some
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unpleasant interactions with changes for keyword arguments, and my
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plan is to get rid of \code{access} altogether in favor of a different
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approach.)
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\end{itemize}
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\section{Minor Changes}
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\section{Changes to the WWW and Internet tools}
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\begin{itemize}
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\item
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The \code{htmllib} module has been rewritten in an incompatible
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fashion. The new version is considerably more complete (HTML 2.0
|
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except forms, but including all ISO-8859-1 entity definitions), and
|
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easy to use. Small changes to \code{sgmllib} have also been made, to
|
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better match the tokenization of HTML as recognized by other web
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tools.
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\item
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A new module \code{formatter} has been added, for use with the new
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\code{htmllib} module.
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\item
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The \code{urllib}and \code{httplib} modules have been changed somewhat
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to allow overriding unknown URL types and to support authentication.
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They now use \code{mimetools.Message} instead of \code{rfc822.Message}
|
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to parse headers. The \code{endrequest()} method has been removed
|
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from the HTTP class since it breaks the interaction with some servers.
|
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\item
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The \code{rfc822.Message} class has been changed to allow a flag to be
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passed in that says that the file is unseekable.
|
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\item
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The \code{ftplib} module has been fixed to be (hopefully) more robust
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on Linux.
|
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\item
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Several new operations that are optionally supported by servers have
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been added to \code{nntplib}: \code{xover}, \code{xgtitle},
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\code{xpath} and \code{date}. % thanks to Kevan Heydon
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\end{itemize}
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\section{Other Language Changes}
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\begin{itemize}
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\item
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The \code{raise} statement now takes an optional argument which
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specifies the traceback to be used when printing the exception's stack
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trace. This must be a traceback object, such as found in
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\code{sys.exc_traceback}. When omitted or given as \code{None}, the
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old behavior (to generate a stack trace entry for the current stack
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frame) is used.
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\item
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The tokenizer is now more tolerant of alien whitespace. Control-L in
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the leading whitespace of a line resets the column number to zero,
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while Control-R just before the end of the line is ignored.
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\end{itemize}
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\section{Changes to Built-in Operations}
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\begin{itemize}
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@ -3671,26 +3735,6 @@ variables, respectively. (These augment rather than replace
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without an argument, and a module's global variables when called with
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an argument of type module.)
|
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\item
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The optional built-in modules \code{dbm} and \code{gdbm} are more
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coordinated --- their \code{open()} functions now take the same values
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for their \var{flag} argument, and the \var{flag} and \var{mode}
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argument have default values (to open the database for reading only,
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and to create the database with mode \code{0666} minuse the umask,
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respectively).
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\item
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A new dbm-like module, \code{dbhash}, has been added, which uses the
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BSD DB package's hash method.
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\item
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The \code{raise} statement now takes an optional argument which
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specifies the traceback to be used when printing the exception's stack
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trace. This must be a traceback object, such as found in
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\code{sys.exc_traceback}. When omitted or given as \code{None}, the
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old behavior (to generate a stack trace entry for the current stack
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frame) is used.
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\item
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The built-in function \code{compile()} now takes a third possible
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value for the kind of code to be compiled: specifying \code{'single'}
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@ -3698,10 +3742,64 @@ generates code for a single interactive statement, which prints the
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output of expression statements that evaluate to something else than
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\code{None}.
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\end{itemize}
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\section{Library Changes}
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\begin{itemize}
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\item
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The tokenizer is now more tolerant of alien whitespace. Control-L in
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the leading whitespace of a line resets the column number to zero,
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while Control-R just before the end of the line is ignored.
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The \code{string.split()} and \code{string.splitfields()} functions
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are now the same function (the presence or absence of the second
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argument determines which operation is invoked); similar for
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\code{string.join()} and \code{string.joinfields()}.
|
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\item
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The \code{Tkinter} module and its helper \code{Dialog} have been
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revamped to use keyword arguments. Tk 4.0 is now the standard. A new
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module \code{FileDialog} has been added which implements standard file
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selection dialogs.
|
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|
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\item
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The optional built-in modules \code{dbm} and \code{gdbm} are more
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coordinated --- their \code{open()} functions now take the same values
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for their \var{flag} argument, and the \var{flag} and \var{mode}
|
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argument have default values (to open the database for reading only,
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and to create the database with mode \code{0666} minuse the umask,
|
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respectively). The memory leaks have finally been fixed.
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\item
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A new dbm-like module, \code{bsddb}, has been added, which uses the
|
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BSD DB package's hash method. % thanks to David Ely
|
||||
|
||||
\item
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A portable (though slow) dbm-clone, implemented in Python, has been
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added for systems where none of the above is provided. It is aptly
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dubbed \code{dumbdbm}.
|
||||
|
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\item
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The module \code{anydbm} provides a unified interface to \code{bsddb},
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\code{gdbm}, \code{dbm}, and \code{dumbdbm}, choosing the first one
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available.
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\item
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A new extension module, \code{binascii}, provides a variety of
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operations for conversion of text-encoded binary data.
|
||||
|
||||
\item
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There are three new or rewritten companion modules implemented in
|
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Python that can encode and decode the most common such formats:
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\code{uu} (uuencode), \code{base64} and \code{binhex}.
|
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|
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\item
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A module to handle the MIME encoding quoted-printable has also been
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||||
added: \code{quopri}.
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||||
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\end{itemize}
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||||
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\section{Other Changes}
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\begin{itemize}
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\item
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The dynamic module loader recognizes the fact that different filenames
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|
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@ -3714,6 +3812,9 @@ Jim Fulton's ``abstract object interface'' has been incorporated into
|
|||
the run-time API. For more detailes, read the files
|
||||
\code{Include/abstract.h} and \code{Objects/abstract.c}.
|
||||
|
||||
\item
|
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The Macintosh version is much more robust now.
|
||||
|
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\item
|
||||
Numerous things I have forgotten or that are so obscure no-one will
|
||||
notice them anyway :-)
|
||||
|
|
|
|||
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