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| -rw-r--r-- | Doc/tut/tut.tex | 61 |
1 files changed, 35 insertions, 26 deletions
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex index 4e2e6bd..e1ccffe 100644 --- a/Doc/tut/tut.tex +++ b/Doc/tut/tut.tex @@ -1618,45 +1618,54 @@ more detail, and adds some new things as well. The list data type has some more methods. Here are all of the methods of list objects: -\begin{description} - -\item[\code{append(x)}] +\begin{methoddesc}[list]{append}{x} Add an item to the end of the list; -equivalent to \code{a[len(a):] = [x]}. +equivalent to \code{a[len(a):] = [\var{x}]}. +\end{methoddesc} -\item[\code{extend(L)}] +\begin{methoddesc}[list]{extend}{L} Extend the list by appending all the items in the given list; -equivalent to \code{a[len(a):] = L}. - -\item[\code{insert(i, x)}] -Insert an item at a given position. The first argument is the index of -the element before which to insert, so \code{a.insert(0, x)} inserts at -the front of the list, and \code{a.insert(len(a), x)} is equivalent to -\code{a.append(x)}. - -\item[\code{remove(x)}] -Remove the first item from the list whose value is \code{x}. +equivalent to \code{a[len(a):] = \var{L}}. +\end{methoddesc} + +\begin{methoddesc}[list]{insert}{i, x} +Insert an item at a given position. The first argument is the index +of the element before which to insert, so \code{a.insert(0, \var{x})} +inserts at the front of the list, and \code{a.insert(len(a), \var{x})} +is equivalent to \code{a.append(\var{x})}. +\end{methoddesc} + +\begin{methoddesc}[list]{remove}{x} +Remove the first item from the list whose value is \var{x}. It is an error if there is no such item. +\end{methoddesc} -\item[\code{pop(\optional{i})}] +\begin{methoddesc}[list]{pop}{\optional{i}} Remove the item at the given position in the list, and return it. If no index is specified, \code{a.pop()} returns the last item in the -list. The item is also removed from the list. - -\item[\code{index(x)}] -Return the index in the list of the first item whose value is \code{x}. +list. The item is also removed from the list. (The square brackets +around the \var{i} in the method signature denote that the parameter +is optional, not that you should type square brackets at that +position. You will see this notation frequently in the +\citetitle[../lib/lib.html]{Python Library Reference}.) +\end{methoddesc} + +\begin{methoddesc}[list]{index}{x} +Return the index in the list of the first item whose value is \var{x}. It is an error if there is no such item. +\end{methoddesc} -\item[\code{count(x)}] -Return the number of times \code{x} appears in the list. +\begin{methoddesc}[list]{count}{x} +Return the number of times \var{x} appears in the list. +\end{methoddesc} -\item[\code{sort()}] +\begin{methoddesc}[list]{sort}{} Sort the items of the list, in place. +\end{methoddesc} -\item[\code{reverse()}] +\begin{methoddesc}[list]{reverse}{} Reverse the elements of the list, in place. - -\end{description} +\end{methoddesc} An example that uses most of the list methods: |