\begin{methoddesc}[string]{center}{width\optional{, fillchar}}
Return centered in a string of length \var{width}. Padding is done
using the specified \var{fillchar} (default is a space).
+\versionchanged[Support for the \var{fillchar} argument]{2.4}
\end{methoddesc}
\begin{methoddesc}[string]{count}{sub\optional{, start\optional{, end}}}
Padding is done using the specified \var{fillchar} (default is a
space). The original string is returned if
\var{width} is less than \code{len(\var{s})}.
+\versionchanged[Support for the \var{fillchar} argument]{2.4}
\end{methoddesc}
\begin{methoddesc}[string]{lower}{}
Padding is done using the specified \var{fillchar} (default is a space).
The original string is returned if
\var{width} is less than \code{len(\var{s})}.
+\versionchanged[Support for the \var{fillchar} argument]{2.4}
\end{methoddesc}
\begin{methoddesc}[string]{rstrip}{\optional{chars}}