On 1 Apr 2004 at 11:08, Guido van Rossum wrote: > I think that SPARK syntax and everything else that people have > traditionally added to docstring markup that isn't strictly speaking > documentation (even some extreme cases of doctest usage) ought to be > considered as candidates for attribute-ification. Where do method attribute type signatures and DBC fit in? As a decorator, or in the docstring? I'm concerned that the funcattrs(a="xyz" .. ) sample tossed around here will be rather ugly for specifying DBC strings. DBC will also need class invariants, so a funcattrs work-alike at the class level will be needed. Finally, I don't have a need to access DBC annotations at runtime once my module is distributed. I would not want to pay the memory cost overhead of loading DBC information or attribute type signatures at runtime. However another person at PyCon poo-poo'd my concern over bloating .pyc files and subsequent memory use. As a compromise I suggested that "annotation" information could go into the .pyc, but be loaded "on demand" at runtime. For example, a traceback handler might be able to use DBC info to suggest the call level that may have caused the problem. To do "on demand loading", I suggested giving .pyc files a "resource section" that could hold this meta information. Normal imports would not load the resource section, but resource information could be loaded later using another mechanism. I thought that putting meta data into a different file was more complicated, and that using -OO to "strip out" annotation was too heavy handed. The standard library might benefit from the addition of method attribute type information. However I think it would be better to not load this information at runtime unless needed. The same could be said for docstrings. If docstrings were "packed" in a resource section of the .pyc file, they might be loaded "on-demand", thereby saving some memory overhead. -- Brad Clements, bkc at murkworks.com (315)268-1000 http://www.murkworks.com (315)268-9812 Fax http://www.wecanstopspam.org/ AOL-IM: BKClements
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