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Code Issues Releases Wiki Activity

Give a slightly better explanation of excepthook.

This commit is contained in:
Ka-Ping Yee 2001-03-23 05:17:41 +00:00
parent f170d7fea7
commit c608fb6389
1 changed files with 6 additions and 4 deletions
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Doc/lib/libsys.tex
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@ -51,19 +51,21 @@ If \var{value} is not \code{None}, this function prints it to
\code{sys.displayhook} is called on the result of evaluating
an expression entered in an interactive Python session.
The display of these values can be customized by assigning
another function to \code{sys.displayhook}.
another one-argument function to \code{sys.displayhook}.
\end{funcdesc}
\begin{funcdesc}{excepthook}{\var{type}, \var{value}, \var{traceback}}
This function prints out a given traceback and exception to
\code{sys.stderr}.
\code{sys.excepthook} is called when an exception is raised
and uncaught. In an interactive session this happens just before
When an exception is raised and uncaught, the interpreter calls
\code{sys.excepthook} with three arguments, the exception class,
exception instance, and a traceback object.
In an interactive session this happens just before
control is returned to the prompt; in a Python program this happens
just before the program exits.
The handling of such top-level exceptions can be customized by
assigning another function to \code{sys.excepthook}.
assigning another three-argument function to \code{sys.excepthook}.
\end{funcdesc}
\begin{datadesc}{__displayhook__}