Develop Reference

Can't install dbt-snowflake; "No module named 'cmake'"

(Context: Barely a novice at Terminal, know some SQL, don't know Python)
I'm taking a course on dbt, have my own Snowflake set up, and I'm trying to install dbt-snowflake on Mac. Attempting to run:
pip install dbt-snowflake
This fails, and it returns:
`
Traceback (most recent call last):
File "/Users/xxxx/course/venv/bin/cmake", line 5, in <module>
from cmake import cmake
ModuleNotFoundError: No module named 'cmake'
error: command '/Users/xxxx/course/venv/bin/cmake' failed with exit code 1
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for pyarrow
Failed to build pyarrow
ERROR: Could not build wheels for pyarrow, which is required to install pyproject.toml-based projects
`
I once successfully changed Python version in virtual environment to 3.9 to see whether that was the problem (but I can't replicate how I changed it), that didn't solve the problem, and currently it's back to 3.11.
Have installed multiple versions of snowflake (3.7, 3.9, 3.11). I don't really understand how this works in context of everything.
I have tried deleting and recreating virtual environments (under same name, venv)
uninstalled and reinstalled cmake (pip install --upgrade cmake); this is version 3.25.0
I don't understand how I can have cmake installed and be told there is no module named 'cmake'.
Is there a particular version of Python I should be running, and if so, how do I reliably change that in virtual environments and different directories?
EDIT TO ADDRESS A COMMENT: I installed Python versions via terminal brew install python#3.9

ERROR: Could not build wheels for spacy, which is required to install pyproject.toml-based projects

Hi Guys, I am trying to install spacy model == 2.3.5 but I am getting this error, please help me!

Try using python 3.6-3.9 instead, where there are binary wheels for pip install to use instead of having to compile from source.
(This is a conflict with python 3.10 and some generated .cpp files in the source package. Python 3.10 wasn't released yet when this version was published.)

I had the similar error while executing pip install -r requirements.txt but for aiohttp module:
socket.c -o build/temp.linux-armv8l-cpython-311/aiohttp/_websocket.o
aiohttp/_websocket.c:198:12: fatal error: 'longintrepr.h' file not found
#include "longintrepr.h"
^~~~~~~ 1 error generated.
error: command '/data/data/com.termux/files/usr/bin/arm-linux-androideabi-clang'
failed with exit code 1
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for aiohttp
Failed to build aiohttp
ERROR: Could not build wheels for aiohttp, which is required to install
pyproject.toml-based projects
Just in case I will leave here solution to my error. This error is specific to Python 3.11 version. On Python with 3.10.6 version installation went fine.
To solve it I needed to update requirements.txt.
Not working versions of modules with Python 3.11:
aiohttp==3.8.1
yarl==1.4.2
frozenlist==1.3.0
Working versions:
aiohttp==3.8.2
yarl==1.8.1
frozenlist==1.3.1
Links to the corresponding issues with fixes:
https://github.com/aio-libs/aiohttp/issues/6600
https://github.com/aio-libs/yarl/issues/706
https://github.com/aio-libs/frozenlist/issues/305

Try using:
!pip install spacy==2.3.5
Do not give space between == and 2.3.5
If you give any space between equal sign and version, it may give error.

How to resolve: "ContextualVersionConflict" on Python?

I was trying to run scanpy's neighbors function with my genes expression dataset:
import scanpy as sc
sc.pp.pca(adata)
sc.pp.neighbors(adata)
and got this error:
C:\Users\User\anaconda3\lib\site-packages\numba\core\cpu.py:77: UserWarning: Numba extension module 'sparse._numba_extension' failed to load due to 'ContextualVersionConflict((llvmlite 0.33.0+1.g022ab0f (c:\users\User\anaconda3\lib\site-packages), Requirement.parse('llvmlite<0.38,>=0.37.0rc1'), {'numba'}))'.
numba.core.entrypoints.init_all()
I then Tried to update my llvmlite==0.33 version due to this error using
pip install llvmlite --upgrade
and got another error:
ERROR: -umba 0.50.1 has requirement llvmlite<0.34,>=0.33.0.dev0, but you'll have llvmlite 0.37.0 which is incompatible.
ERROR: Cannot uninstall 'llvmlite'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
Python doesn't let me to upgrade llvmlite to the newer version and therefore I cannot use scanpy's functions. I tried to update numba, I tried to reinstall everything, but nothing worked.
What should be done in order to solve this problem?

No module named 'pm4py'

I want to use 'pm4py' but while import:
from pm4py.objects.log.importer.xes import factory as xes_import_factory
I got error:
ModuleNotFoundError: No module named 'pm4py
I use Visual Studio Code on Windows. When I use pip install pm4py from it's terminal(or cmd) I got error like:
Building wheel for cvxopt (setup.py) ... error
ERROR: Command errored out with exit status 1:
But when i use same line pip install pm4py in Anaconda Prompt then it returns that all Requirements are already satisfied (I think I already installed this package). I even found the folder named 'pm4py' in anaconda\lib\site-packages.
pm4py also doesn't appear on the pip list in cmd (and i think it should?).
I've been searching the internet for several hours and can't find a solution. What can I do to use import pm4py?

Solved for jupyter notebook projects: by executing conda install -c conda-forge ciso8601 then pip install pm4py

I encountered the same issue and guess this has been depreciated as development ceased.

Python error message "Incompatible library version" libxml and etree.so

Update 2:
the main problem turned out to be a different one from what I had thought it was, and asked for help here. I moved the new question to a new post:
Install custom python package in virtualenv
Update:
ok, so I screwed up my non-virtualenv by accident.
The non-virtualenv (normal bash) I could easily fix by removing the manually installed (via pip) lxml and running
conda install lxml --force
But for some reason, that doesn't work in the virtualenv.
There, running
conda install lxml --force
works without error message, but when I run python and simply say
>>> import lxml
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named lxml
Any suggestions??
old message:
I'm trying to use virtualenv for my python flask application.
The python code runs perfectly fine without the virtualenv.
I've installed the packages I need in the virtualenv, but I after installing lxml via
pip install lxml
Installing collected packages: lxml
Successfully installed lxml-3.6.0
I get the following error message when running my code:
File "/Users/XXX/xxx/flask-aws/lib/python2.7/site-packages/docx-0.2.4-py2.7.egg/docx.py", line 17, in <module>
from lxml import etree
ImportError: dlopen(/Users/XXX/xxx/flask-aws/lib/python2.7/site-packages/lxml/etree.so, 2): Library not loaded: libxml2.2.dylib
Referenced from: /Users/XXX/xxx/flask-aws/lib/python2.7/site-packages/lxml/etree.so
Reason: Incompatible library version: etree.so requires version 12.0.0 or later, but libxml2.2.dylib provides version 10.0.0
I have seen other people report similar problems at stackoverflow, and one guy remarked that the problem might related to the virtualenv, but there was no solution.
Once again: The python code runs perfectly fine without virtualenv! But inside virtualenv, I can't get it to work.
I'm using Anaconda Python 2.7 on a Mac.
I'd appreciate any help guys!

I had the same error and stumbled upon this link, after searching for the incompatible library error "libxml2.2.dylib provides version 10.0.0"
Installing libxml2 that worked for me:
brew install libxml2
brew link --force libxml2

Solution that works for me in virtual environment is to force pip to recompile lxml:
pip install lxml --force-reinstall --ignore-installed --no-binary :all: