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| -rw-r--r-- | Doc/tut.tex | 52 | ||||
| -rw-r--r-- | Doc/tut/tut.tex | 52 |
2 files changed, 100 insertions, 4 deletions
diff --git a/Doc/tut.tex b/Doc/tut.tex index c510e69..d6f2dc1 100644 --- a/Doc/tut.tex +++ b/Doc/tut.tex @@ -215,8 +215,8 @@ and a copyright notice before printing the first prompt, e.g.: \bcode\begin{verbatim} python -Python 1.3 (Oct 13 1995) -Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam +Python 1.4b3 (Aug 25 1996) [GCC 2.7.0] +Copyright 1991-1996 Stichting Mathematisch Centrum, Amsterdam >>> \end{verbatim}\ecode @@ -3863,4 +3863,52 @@ notice them anyway :-) \end{itemize} + +\chapter{New in Release 1.4} + + +This chapter describes additions to the Python language and library in +version 1.4. + +\begin{itemize} + +\item +Power operator. \code{x**y} is equivalent to \code{pow(x, y)}. + +\item +Complex numbers. Imaginary literals are writen with a \code{'j'} +suffix (\code{'J'} is allowed for consistency.) Complex numbers with +a nonzero real component are written as +\code{(\var{real}+\var{imag}j)}. The usual arithmetic operators on +complex numbers are supported, so that e.g. \code{1j**2} equals +\code{-1.0}. Module \code{cmath} provides versions of all math +functions that take complex arguments and return complex results. +(Module \code{math} only supports real numbers, so that +\code{math.sqrt(-1)} still raises a \code{ValueError} exception.) + +\item +New indexing syntax. It is now possible to use a tuple as an indexing +expression for a mapping object without parenthesizing it, +e.g. \code{x[1, 2, 3]}. + +\item +New slicing syntax. In support of the Numerical Python extension +(distributed separately), slice indices of the form +\code{x[lo:hi:stride]} are possible, multiple slice indices separated by +commas are allowed, and an index position may be replaced by ellipses, +as follows: \code{x[a, ..., z]}. There's also a new built-in function +\code{slice(lo, hi, stride)} and a new built-in object +\code{Ellipses}, which yield the same effect without using special +syntax. None of the standard sequence types support indexing with +slice objects or ellipses yet. Note that when any of these extensions +are used, the mapping interface for indexing will be used. + +\item +XXX More!!! + +\end{itemize} + + + + \end{document} diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex index c510e69..d6f2dc1 100644 --- a/Doc/tut/tut.tex +++ b/Doc/tut/tut.tex @@ -215,8 +215,8 @@ and a copyright notice before printing the first prompt, e.g.: \bcode\begin{verbatim} python -Python 1.3 (Oct 13 1995) -Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam +Python 1.4b3 (Aug 25 1996) [GCC 2.7.0] +Copyright 1991-1996 Stichting Mathematisch Centrum, Amsterdam >>> \end{verbatim}\ecode @@ -3863,4 +3863,52 @@ notice them anyway :-) \end{itemize} + +\chapter{New in Release 1.4} + + +This chapter describes additions to the Python language and library in +version 1.4. + +\begin{itemize} + +\item +Power operator. \code{x**y} is equivalent to \code{pow(x, y)}. + +\item +Complex numbers. Imaginary literals are writen with a \code{'j'} +suffix (\code{'J'} is allowed for consistency.) Complex numbers with +a nonzero real component are written as +\code{(\var{real}+\var{imag}j)}. The usual arithmetic operators on +complex numbers are supported, so that e.g. \code{1j**2} equals +\code{-1.0}. Module \code{cmath} provides versions of all math +functions that take complex arguments and return complex results. +(Module \code{math} only supports real numbers, so that +\code{math.sqrt(-1)} still raises a \code{ValueError} exception.) + +\item +New indexing syntax. It is now possible to use a tuple as an indexing +expression for a mapping object without parenthesizing it, +e.g. \code{x[1, 2, 3]}. + +\item +New slicing syntax. In support of the Numerical Python extension +(distributed separately), slice indices of the form +\code{x[lo:hi:stride]} are possible, multiple slice indices separated by +commas are allowed, and an index position may be replaced by ellipses, +as follows: \code{x[a, ..., z]}. There's also a new built-in function +\code{slice(lo, hi, stride)} and a new built-in object +\code{Ellipses}, which yield the same effect without using special +syntax. None of the standard sequence types support indexing with +slice objects or ellipses yet. Note that when any of these extensions +are used, the mapping interface for indexing will be used. + +\item +XXX More!!! + +\end{itemize} + + + + \end{document} |