Message 333638 - Python tracker

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Author	barry
Recipients	Anthony Sottile, Chris Billington, Ivan.Pozdeev, SilentGhost, __Vano, barry, brett.cannon, christian.heimes, eric.smith, eric.snow, ethan smith, jaraco, mhammond, ncoghlan, pitrou, takluyver, terry.reedy, vstinner
Date	2019年01月14日.19:55:22
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<2C557906-6A18-4A90-8439-A7F328D97F4D@python.org>
In-reply-to	<1547456518.6.0.169335368433.issue33944@roundup.psfhosted.org>

Content
On Jan 14, 2019, at 04:02, STINNER Victor <report@bugs.python.org> wrote: > > I really hate .pth files because the slow down Python startup time for all applications whereas .pth files are usually specific to a very few applications using one or two specific modules. > > They can also modify the behavior of Python for all applications, with no way to opt-out. > > I would prefer to have an opt-in option, disabled by default. I completely agree. The other problem is that .pth-caused problems are very difficult to diagnose and debug. Essentially you have to hack site.py to break into the loading machinery. I have to believe that we can come up with a better mechanism that doesn’t suffer from these problems. Do we have a single place to capture a list of .pth use cases?

Content

On Jan 14, 2019, at 04:02, STINNER Victor <report@bugs.python.org> wrote:
> 
> I really hate .pth files because the slow down Python startup time for *all* applications whereas .pth files are usually specific to a very few applications using one or two specific modules.
> 
> They can also modify the behavior of Python for all applications, with no way to opt-out.
> 
> I would prefer to have an opt-in option, disabled by default.
I completely agree. The other problem is that .pth-caused problems are very difficult to diagnose and debug. Essentially you have to hack site.py to break into the loading machinery. I have to believe that we can come up with a better mechanism that doesn’t suffer from these problems.
Do we have a single place to capture a list of .pth use cases?

History
Date	User	Action	Args
2019年01月14日 19:55:23	barry	set	recipients: + barry, mhammond, brett.cannon, terry.reedy, jaraco, ncoghlan, pitrou, vstinner, eric.smith, christian.heimes, SilentGhost, __Vano, eric.snow, takluyver, Ivan.Pozdeev, Anthony Sottile, ethan smith, Chris Billington
2019年01月14日 19:55:22	barry	link	issue33944 messages
2019年01月14日 19:55:22	barry	create

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