Hi, On Mon, Oct 2, 2017 at 11:42 AM, Raymond Hettinger < raymond.hettin...@gmail.com> wrote: > > > I don't expect to find anything that would help users of Django, Flask, > and Bottle since those are typically long-running apps where we value > response time more than startup time. >
Actually, as web developers, we also value startup time when in development mode, specially when we are in "hot reload" mode (when the app restarts automatically each time we save a development file). In my mid-sized projects (~10 kE LOC, ~150 pip dependencies) it takes between 5 and 10s. This is probably the upper limit to "stay in flow". Same for unit tests. There is this famous Gary Bernhardt talk [https://youtu.be/RAxiiRPHS9k?t=12m ] he argues that a whole unit test suite should be able to run in < 1s and actually show examples where the developer is able to run hundreds of tests in less that 1s. Note: In my projects, it take 3-4 seconds just to collect them (using pytest --collect-only), but I suspect Python's startup time is only responsible for a small part of this delay. Still, this is an important point to keep in mind. S. -- Stefane Fermigier - http://fermigier.com/ - http://twitter.com/sfermigier - http://linkedin.com/in/sfermigier Founder & CEO, Abilian - Enterprise Social Software - http://www.abilian.com/ Chairman, Free&OSS Group / Systematic Cluster - http://www.gt-logiciel-libre.org/ Co-Chairman, National Council for Free & Open Source Software (CNLL) - http://cnll.fr/ Founder & Organiser, PyData Paris - http://pydata.fr/ --- “You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.” — R. Buckminster Fuller
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