Mercurial > cpython-lru_cache-weakref
diff Doc/lib/libstdtypes.tex @ 19243:788a16351e18 legacy-trunk
Describe the new semantics for setting and deleting a function's
__dict__ attribute. Deleting it, or setting it to a non-dictionary
result in a TypeError. Note that getting it the first time magically
initializes it to an empty dict so that func.__dict__ will always
appear to be a dictionary (never None).
Closes SF bug #446645.
| author | Barry Warsaw <barry@python.org> |
|---|---|
| date | Tue, 14 Aug 2001 18:22:24 +0000 |
| parents | ab8aa4302109 |
| children | dd8d6153a8c6 |
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--- a/Doc/lib/libstdtypes.tex Tue Aug 14 15:32:16 2001 +0000 +++ b/Doc/lib/libstdtypes.tex Tue Aug 14 18:22:24 2001 +0000 @@ -1047,19 +1047,14 @@ attributes, which can be used to, e.g. attach metadata to functions. Regular attribute dot-notation is used to get and set such attributes. \emph{Note that the current implementation only supports -function attributes on functions written in Python. Function -attributes on built-ins may be supported in the future.} +function attributes on user-defined functions. Function attributes on +built-in functions may be supported in the future.} Functions have another special attribute \code{\var{f}.__dict__} (a.k.a. \code{\var{f}.func_dict}) which contains the namespace used to -support function attributes. \code{__dict__} can be accessed -directly, set to a dictionary object, or \code{None}. It can also be -deleted (but the following two lines are equivalent): - -\begin{verbatim} -del func.__dict__ -func.__dict__ = None -\end{verbatim} +support function attributes. \code{__dict__} and \code{func_dict} can +be accessed directly or set to a dictionary object. A function's +dictionary cannot be deleted. \subsubsection{Methods \label{typesmethods}} \obindex{method}