<div dir="auto">Ho John,<div dir="auto"><br></div><div dir="auto">If you are willing to try, you could install QGIS using conda.</div><div dir="auto"><br></div><div dir="auto">When you create the environment, you can specify what python version to use, then just install QGIS on that environment and it will work just fine with python 3.9.</div><div dir="auto"><br></div><div dir="auto">Check my post about it:</div><div dir="auto"><br></div><div dir="auto"><a href="https://gisunchained.wordpress.com/2019/05/29/using-qgis-from-conda/">https://gisunchained.wordpress.com/2019/05/29/using-qgis-from-conda/</a><br></div><div dir="auto"><br></div><div dir="auto">The main caveat will be grass algorithms, it will probably not work. </div><div dir="auto"><br></div><div dir="auto">Best regards,</div><div dir="auto"><br></div><div dir="auto">Alexandre Neto</div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">A terça, 10/08/2021, 03:16, john polo <<a href="mailto:jpolo@mail.usf.edu" target="_blank" rel="noreferrer">jpolo@mail.usf.edu</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Hi,</p>
<p>I have QGIS 3.18 installed on Windows 10. It includes Python
3.7.2. I need to use a newer version of Python for programming
projects. I tried to work with 3.7.2, but packages like numpy use
old versions that don't work with newer versions of Python. I
tried installing Python 3.9.5. I used the version available from
<a href="http://python.org" rel="noreferrer noreferrer" target="_blank">python.org</a>: <a href="https://www.python.org/downloads/windows/" rel="noreferrer noreferrer" target="_blank">https://www.python.org/downloads/windows/</a></p>
<p>I changed some environment variables, specifically anything in
PATH that would call 3.7.2 when I call Python3 on a cmd prompt.
After that, I still get this message:</p>
<blockquote>
<p>Error processing line 1 of
C:\OSGeo4W64\apps\Python37\lib\site-packages\matplotlib-3.1.3-py3.7-nspkg.pth:</p>
Traceback (most recent call last):<br>
File "C:\OSGeo4W64\apps\Python37\lib\site.py", line 168, in
addpackage<br>
exec(line)<br>
File "<string>", line 1, in <module><br>
File "C:\OSGeo4W64\apps\Python37\lib\importlib\__init__.py",
line 51, in <module><br>
_w_long = _bootstrap_external._w_long<br>
AttributeError: module 'importlib._bootstrap_external' has no
attribute '_w_long'</blockquote>
<p>whether I use "pipenv" or "py -3.9" ("python launcher") in any
directory or for different users on the computer. If I call
"python3" on the command line, a Bing window opens on the
Microsoft Store with Python 3.9 ready to download. To be clear, I
haven't gotten as far as calling "import matplotlib".<br>
</p>
<p>Since the error references OSGeo4W64, and QGIS is my primary
software I have installed from that source (I also have GRASS, but
don't really use it), I was wondering if someone here can point to
an environment variable that isn't obvious that I should change to
call 3.9.5 without any issues?<br>
</p>
<p>Cheers,</p>
<p>John<br>
</p>
<pre cols="72">--
Enlightenment is ego's ultimate disappointment.
-Chogyam Trungpa</pre>
</div>
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