diff options
Diffstat (limited to 'Doc/ext.tex')
| -rw-r--r-- | Doc/ext.tex | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Doc/ext.tex b/Doc/ext.tex index f133a3f..83d1078 100644 --- a/Doc/ext.tex +++ b/Doc/ext.tex @@ -196,7 +196,7 @@ or \code{NULL} if no exception has occurred. You normally don't need to call \code{PyErr_Occurred()} to see whether an error occurred in a function call, since you should be able to tell from the return value. -When a function \var{f} that calls another function var{g} detects +When a function \var{f} that calls another function \var{g} detects that the latter fails, \var{f} should itself return an error value (e.g. \code{NULL} or \code{-1}). It should \emph{not} call one of the \code{PyErr_*()} functions --- one has already been called by \var{g}. @@ -305,7 +305,7 @@ passing it the string we just got from \code{PyArg_ParseTuple()}: sts = system(command); \end{verbatim} -Our \code{spam.system()} function must return the value of \code{sys} +Our \code{spam.system()} function must return the value of \code{sts} as a Python object. This is done using the function \code{Py_BuildValue()}, which is something like the inverse of \code{PyArg_ParseTuple()}: it takes a format string and an arbitrary |