On 28 Jun 2018, Terry Reedy wrote (in article<mailman.176.1530208004.7721.python-l...@python.org>):
> On 6/28/2018 1:08 PM, Elliott Roper wrote: > > I have done something stupid. Don't know what. > > It appears that you ran 3.7 expecting that modules installed for 3.6 > would magically be available for 3.7. Yes indeed. It worked for 3.4, 3.5, and 3.6 > > > There is a pip command for making an editable file of installed > packages. Run that in 3.6, perhaps after updating everything. > > > There is another pip command for using that file to install everything > listed. Run that in 3.7. I can't see the pip commands you mention for writing a file from 3.6 and reading it back for 3.7 Is it pip freeze -r <file> followed by pip install -r<file>? If so, what is meant by 'the given requirements file' in the freeze options? > > > > My $PATH looks like this > > XXXMac:~ elliott$ echo $PATH > > /Library/Frameworks/Python.framework/Versions/3.7/bin:/Library/Frameworks/Py > > th > > on.framework/Versions/3.6/bin:/Library/Frameworks/Python.framework/Versions/ > > 3. > > 5/bin:/Library/Frameworks/Python.framework/Versions/3.4/bin:/Users/elliott/b > > in > > > /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/usr/local > > > /MacGPG2/bin:/Applications/Wireshark.app/Contents/MacOS:/usr/local/git/bin > > > > pip3 list or pip3.7 list gives me > > Package Version > > ---------- ------- > > pip 10.0.1 > > setuptools 39.0.1 > > This is the content of the 3.7 site-packages. > > > > > > import numpy as np > > Traceback (most recent call last): > > File "<stdin>", line 1, in <module> > > ModuleNotFoundError: No module named 'numpy' > > So it is not lying to me!!! > > > > pip list or pip3.6 list > > gives the whole caboodle I was expecting with a far smaller version number > > for setuptools. > > The content of the 3.6 site-packages directory. When I look inside site-packages in ~/Library (see below) I see many packages that pip lists, but by no means all. F'instance numpy and scipy. They can be found in /Library's site-packages however. > > > > My understanding is that the whole $PATH is searched in order to resolve an > > import, but it isn't. > > The OS searches the OS path, which you listed above. > Python searches its sys.path, which it creates when started. > Run >>> import sys; sys.path to see the contents. > Unless macOS is more different than I think, you should see a 3.7 > site-packages when running 3.7. Aha! That is most helpful Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24) [Clang 6.0 (clang-600.0.57)] on darwin Type "help", "copyright", "credits" or "license" for more information. (python prompt)>>> import sys .>>>sys.path ['', '/Library/Frameworks/Python.framework/Versions/3.7/lib/python37.zip', # no such file '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7', # 207 items, none matching pip intstallable modules '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib- dynload',# 69 items, none matching pip installable modules '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site- packages'] # just pip and setuptools are in here .>>> ^D EiPro:~ elliott$ python3.6 Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 05:52:31) [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin Type "help", "copyright", "credits" or "license" for more information. .>>> import sys (python prompt)>>> sys.path ['', '/Library/Frameworks/Python.framework/Versions/3.6/lib/python36.zip', # no such file '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6', # 207 items, none matching pip intstallable modules '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/lib- dynload',# 65 items, none matching pip installable modules '/Users/elliott/Library/Python/3.6/lib/python/site-packages', # 103 items some matching items that appear in pip3.6 list '/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site- packages'] # numpy, scipy, pandas etc. are here. These might have been modules I needed sudo -H to update .>>> What I did not make clear that my 'elliott' user is not an Administrator. If I log into my admin account (which I hardly ever do), it thinks my Python3 is 3.7, list there also shows the hugely abbreviated collection of modules namely pip and setuptools. pip list shows a list of modules so old as to be unrecognisable. It looks like I have a tangled mess. Is there a way of getting rid of all the pythons except Apple's museum piece and starting again? It is a hobby for me. I have no need for backward compatibility. I think if I could install 3.7 site wide from my non-admin account, I would be happiest. The standard install pretty much worked up to 3.6 pip Would it be safe to delete everything on python's sys.path and re-install from the download .pkg > > > > It might be relevant that I have had a bit of hassle installing module > > updates in the past. I would get an error saying the module version being > > replaced could not be deleted with permissions errors which I resolved with > > a > > bit of sudo -H. > > > > Python 3.6 is still working properly when invoked explicitly Sorry, I am really out of my depth here. Thanks so much for your help -- To de-mung my e-mail address:- fsnospam$elliott$$ PGP Fingerprint: 1A96 3CF7 637F 896B C810 E199 7E5C A9E4 8E59 E248 -- https://mail.python.org/mailman/listinfo/python-list
