2015-12-15 22:10 GMT+01:00 Franklin? Lee <leewangzhong+python at gmail.com>: > (Stealing your style of headers.) I'm using reStructured Text, it's not really a new style :-) > Overhead > ======== > > If inner functions are being created a lot, that's extra work. But I > guess you should expect a lot of overhead if you're doing such a > thing. Sorry, I didn't read carefully your email, but I don't think that it's acceptable to make Python namespaces slower. In FAT mode, we need versionned dictionaries for module namespace, type namespace, global namespace, etc. >> Do you have an estimation of the cost of the "extra pointer"? Impact >> on memory and CPU. dict is really a very important type for the >> performance of Python. If you make dict slower, I'm sure that Python >> overall will be slower. > > I'm proposing it as a subclass. Please read the "Versionned dictionary" section of my email: https://mail.python.org/pipermail/python-dev/2015-December/142397.html I explained why using a subclass doesn't work in practice. Victor
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