According to Tim Peters, there should be 'print' statements in one
particular example.
diff --git a/Doc/libprofile.tex b/Doc/libprofile.tex
index 3fa79df..cdf8c4e 100644
--- a/Doc/libprofile.tex
+++ b/Doc/libprofile.tex
@@ -566,9 +566,9 @@
\begin{verbatim}
import profile
pr = profile.Profile()
-pr.calibrate(100)
-pr.calibrate(100)
-pr.calibrate(100)
+print pr.calibrate(100)
+print pr.calibrate(100)
+print pr.calibrate(100)
\end{verbatim}
The argument to \method{calibrate()} is the number of times to try to