diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/lib/libfuncs.tex | 8 | ||||
| -rw-r--r-- | Doc/tut/tut.tex | 5 |
2 files changed, 12 insertions, 1 deletions
diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex index 323a516..50f22f8 100644 --- a/Doc/lib/libfuncs.tex +++ b/Doc/lib/libfuncs.tex @@ -897,6 +897,14 @@ class C: \versionadded{2.2} \end{funcdesc} +\begin{funcdesc}{sum}{sequence\optional{start=0}} + Sums up the items of a \var{sequence}, from left to right, and returns + the total. The \var{sequence}'s items are normally numbers, and are + not allowed to be strings. The fast, correct way to join up a + sequence of strings is by calling \code{''.join(\var{sequence})}. + \versionadded{2.3} +\end{funcdesc} + \begin{funcdesc}{super}{type\optional{object-or-type}} Return the superclass of \var{type}. If the second argument is omitted the super object returned is unbound. If the second argument is an diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex index 71d3f60..b227576 100644 --- a/Doc/tut/tut.tex +++ b/Doc/tut/tut.tex @@ -1819,6 +1819,9 @@ item, then to the result and the next item, and so on. For example, 0 \end{verbatim} +Don't use this example's definition of \code{sum}: since summing numbers +is such a common need, a built-in function \code{sum(\var{sequence})} is +already provided, and works exactly like this\versionadded{2,3}. \subsection{List Comprehensions} @@ -2502,7 +2505,7 @@ standard module \module{__builtin__}\refbimodindex{__builtin__}: 'len', 'license', 'list', 'locals', 'long', 'map', 'max', 'min', 'object', 'oct', 'open', 'ord', 'pow', 'property', 'quit', 'range', 'raw_input', 'reduce', 'reload', 'repr', 'round', - 'setattr', 'slice', 'staticmethod', 'str', 'string', 'super', + 'setattr', 'slice', 'staticmethod', 'str', 'string', 'sum', 'super', 'tuple', 'type', 'unichr', 'unicode', 'vars', 'xrange', 'zip'] \end{verbatim} |