[Python-ideas] __dir__ in which folder is this py file
barry at python.org
Mon May 7 22:09:20 EDT 2018
Yuval Greenfield wrote:
> I often need to reference a script's current directory. I end up writing:
> import os
> SRC_DIR = os.path.dirname(__file__)
The question I have is, why do you want to reference the script's
If the answer is to access other files in that directory, then please
consider using importlib.resources (for Python 3.7) and
importlib_resources (for Python 2.7, 3.4-3.6).
__file__ simply isn't safe, and pkg_resources can be a performance
killer. The problem of course is that if you're writing an application
and *any* of your dependencies use either technique, you are going to
pay for it. This is exactly why Brett and I wrote importlib.resources.
We wanted a consistent API, that allows custom loaders to play along,
and which is about as efficient as possible, uses Python's import
machinery, and is safe for uses like zipapps.
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