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author | Guido van Rossum <guido@python.org> | 1996-12-06 21:22:41 (GMT) |
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committer | Guido van Rossum <guido@python.org> | 1996-12-06 21:22:41 (GMT) |
commit | 61ed4db9e8eca7807d5bca3e2ee0f81cf40bd3d1 (patch) | |
tree | bf17ae6e8295497d46e63f2e4139dc9b377a2c0b /Doc/liboperator.tex | |
parent | ccaf3b6d11f7ea1a8e17ce99f1f6ec2f84d7f35c (diff) | |
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Added section for operator module (compiled Skip Montanaro).
Diffstat (limited to 'Doc/liboperator.tex')
-rw-r--r-- | Doc/liboperator.tex | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/Doc/liboperator.tex b/Doc/liboperator.tex new file mode 100644 index 0000000..7fed767 --- /dev/null +++ b/Doc/liboperator.tex @@ -0,0 +1,193 @@ +% Contributed by Skip Montanaro, from the module's doc strings. + +\section{Built-in Module \sectcode{operator}} % If implemented in C +\bimodindex{spam} + +The \code{operator} module exports a set of functions implemented in C +corresponding to the intrinsic operators of Python. For example, +{}\code{operator.add(x, y)} is equivalent to the expression x+y. The +function names are those used for special class methods; variants without +leading and trailing '\_\_' are also provided for convenience. + +The \code{operator} module defines the following functions: + +\renewcommand{\indexsubitem}{(in module operator)} + +\begin{funcdesc}{add}{a\, b} +Return a + b, for a and b numbers. +\end{funcdesc} + +\begin{funcdesc}{\_\_add\_\_}{a\, b} +Return a + b, for a and b numbers. +\end{funcdesc} + +\begin{funcdesc}{sub}{a\, b} +Return a - b. +\end{funcdesc} + +\begin{funcdesc}{\_\_sub\_\_}{a\, b} +Return a - b. +\end{funcdesc} + +\begin{funcdesc}{mul}{a\, b} +Return a * b, for a and b numbers. +\end{funcdesc} + +\begin{funcdesc}{\_\_mul\_\_}{a\, b} +Return a * b, for a and b numbers. +\end{funcdesc} + +\begin{funcdesc}{div}{a\, b} +Return a / b. +\end{funcdesc} + +\begin{funcdesc}{\_\_div\_\_}{a\, b} +Return a / b. +\end{funcdesc} + +\begin{funcdesc}{mod}{a\, b} +Return a \% b. +\end{funcdesc} + +\begin{funcdesc}{\_\_mod\_\_}{a\, b} +Return a \% b. +\end{funcdesc} + +\begin{funcdesc}{neg}{o} +Return o negated. +\end{funcdesc} + +\begin{funcdesc}{\_\_neg\_\_}{o} +Return o negated. +\end{funcdesc} + +\begin{funcdesc}{pos}{o} +Return o positive. +\end{funcdesc} + +\begin{funcdesc}{\_\_pos\_\_}{o} +Return o positive. +\end{funcdesc} + +\begin{funcdesc}{abs}{o} +Return the absolute value of o. +\end{funcdesc} + +\begin{funcdesc}{\_\_abs\_\_}{o} +Return the absolute value of o. +\end{funcdesc} + +\begin{funcdesc}{inv}{o} +Return the inverse of o. +\end{funcdesc} + +\begin{funcdesc}{\_\_inv\_\_}{o} +Return the inverse of o. +\end{funcdesc} + +\begin{funcdesc}{lshift}{a\, b} +Return a shifted left by b. +\end{funcdesc} + +\begin{funcdesc}{\_\_lshift\_\_}{a\, b} +Return a shifted left by b. +\end{funcdesc} + +\begin{funcdesc}{rshift}{a\, b} +Return a shifted right by b. +\end{funcdesc} + +\begin{funcdesc}{\_\_rshift\_\_}{a\, b} +Return a shifted right by b. +\end{funcdesc} + +\begin{funcdesc}{and\_}{a\, b} +Return the bitwise and of a and b. +\end{funcdesc} + +\begin{funcdesc}{\_\_and\_\_}{a\, b} +Return the bitwise and of a and b. +\end{funcdesc} + +\begin{funcdesc}{or\_}{a\, b} +Return the bitwise or of a and b. +\end{funcdesc} + +\begin{funcdesc}{\_\_or\_\_}{a\, b} +Return the bitwise or of a and b. +\end{funcdesc} + +\begin{funcdesc}{concat}{a\, b} +Return a + b for a and b sequences. +\end{funcdesc} + +\begin{funcdesc}{\_\_concat\_\_}{a\, b} +Return a + b for a and b sequences. +\end{funcdesc} + +\begin{funcdesc}{repeat}{a\, b} +Return a * b where a is a sequence and b is an integer. +\end{funcdesc} + +\begin{funcdesc}{\_\_repeat\_\_}{a\, b} +Return a * b where a is a sequence and b is an integer. +\end{funcdesc} + +\begin{funcdesc}{getitem}{a\, b} +Return the value of a at index b. +\end{funcdesc} + +\begin{funcdesc}{\_\_getitem\_\_}{a\, b} +Return the value of a at index b. +\end{funcdesc} + +\begin{funcdesc}{setitem}{a\, b\, c} +Set the value of a at index b to c. +\end{funcdesc} + +\begin{funcdesc}{\_\_setitem\_\_}{a\, b\, c} +Set the value of a at index b to c. +\end{funcdesc} + +\begin{funcdesc}{delitem}{a\, b} +Set the value of a at index b. +\end{funcdesc} + +\begin{funcdesc}{\_\_delitem\_\_}{a\, b} +Set the value of a at index b. +\end{funcdesc} + +\begin{funcdesc}{getslice}{a\, b\, c} +Return the slice of a from index b to index c-1. +\end{funcdesc} + +\begin{funcdesc}{\_\_getslice\_\_}{a\, b\, c} +Return the slice of a from index b to index c-1. +\end{funcdesc} + +\begin{funcdesc}{setslice}{a\, b\, c\, v} +Set the slice of a from index b to index c-1 to the sequence v. +\end{funcdesc} + +\begin{funcdesc}{\_\_setslice\_\_}{a\, b\, c\, v} +Set the slice of a from index b to index c-1 to the sequence v. +\end{funcdesc} + +\begin{funcdesc}{delslice}{a\, b\, c} +Delete the slice of a from index b to index c-1. +\end{funcdesc} + +\begin{funcdesc}{\_\_delslice\_\_}{a\, b\, c} +Delete the slice of a from index b to index c-1. +\end{funcdesc} + +Example: Build a dictionary that maps the ordinals from 0 to 256 to their +character equivalents. + +\begin{verbatim} +>>> import operator +>>> d = {} +>>> keys = range(256) +>>> vals = map(chr, keys) +>>> map(operator.setitem, [d]*len(keys), keys, vals) +\end{verbatim} |