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

Failed building wheel for pyarrow in pypy3 interpreter

I am installing streamlit with pypy3 as interpreter in pycharm and stuck at this ERROR: Failed building wheel for pyarrow
I tried every solutions found on the web related with pyarrow, but seems like all solutions posted are for python as interpreter and not for pypy. If you guys have any solution, please let me know.
Command : pip install streamlit
Operating system : ubuntu 22.04
pypy3 version : 7.3.9
Traceback (most recent call last):
File "/home/lungsang/Desktop/streamlit/.env/bin/cmake", line 5, in <module>
from cmake import cmake
ModuleNotFoundError: No module named 'cmake'
error: command '/home/lungsang/Desktop/streamlit/.env/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 have installed cmake before running the command.

You need to pypy3 -m pip install cmake. With that, I am not sure this will work. Even if it does, pyarrow is a c++-based project, so the PyPy python JIT will have a hard time finding opportunities to speed up python code. Additionally, the need to emulate the CPython interactions between python and C mean the code may actually run slower under PyPy than under CPython, if you can get it to run at all.

Seems like currently pyarrow can't be use with pypy.
https://github.com/apache/arrow/issues/2089

pip version error with installed package

I'm attempting to install a package I recently create into a Heroku app. It seems that Heroku uses an older version of pip which prevents my package from installing correctly. I repeated the process with repl.it to see what happens and here is what I get:
Repl.it: Installing fresh packages
Repl.it: zoho_crm
Collecting zoho_crm
Downloading
https://files.pythonhosted.org/packages/8e/73/a1464dd121fec9579c724de6b9b3243ea733fb85d441b928ff467ec1328f/zoho_crm-0.5.tar.gz
Building wheels for collected packages: zoho-crm
Running setup.py bdist_wheel for zoho-crm: started
Running setup.py bdist_wheel for zoho-crm: finished with status 'done'
Stored in directory: /home/runner/.cache/pip/wheels/46/66/f9/c9604984f6670461c451dd9431105760405d06c658d3b44f01
Successfully built zoho-crm
Installing collected packages: zoho-crm
Successfully installed zoho-crm-0.5
You are using pip version 9.0.1, however version 10.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Repl.it: package installation success
Traceback (most recent call last):
File "python", line 1, in <module>
ModuleNotFoundError: No module named 'zoho_crm'
Line 1 of my code (the only line) is import zoho_crm
This is also the same error I get in Heroku.
I have no problems updating pip on my local machine, but the update with these cloud services seems to update but doesn't stick.
Any suggestions?

That version warning is only warning and can be safely ignored now. Your problem has nothing to do with pip, the problem is caused by the broken package zoho_crm — it doesn't contain anything installable, neither python modules nor packages.

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:

Installing Django: Using XAMPP's MySQL, MySQL-python 1.2.3 & 1.2.4 errors?

I am following this awesome walk-through on how to install python.
I don't think I have a real problem as ...I think I'm able to work on my django project... however I ran into a couple errors that I just kind of skipped over and I was wondering where they are from.
Everything was going swimmingly until I got to the part where I install MySQL-python. I'm actually using MySQL through XAMPP instead... so if that's the problem let me know.
I tried installing MySQL-python v1.2.3 and got this error:
Processing MySQL-python-1.2.3.win-amd64-py2.7.exe
creating 'c:\users\quentin\appdata\local\temp\easy_install-reydf8\MySQL_python-1.2.3-py2.7-win32.egg' and adding 'c:\users\quentin\appdata\local\temp\easy_install-reydf8\MySQL_python-1.2.3-py2.7-win32.egg.tmp' to it
Moving MySQL_python-1.2.3-py2.7-win32.egg to c:\virtualenvs\django_tutorial\lib\site-packages
Adding MySQL-python 1.2.3 to easy-install.pth file
Installed c:\virtualenvs\django_tutorial\lib\site-packages\mysql_python-1.2.3-py2.7-win32.egg
Processing dependencies for MySQL-python==1.2.3
Searching for MySQL-python==1.2.3
Reading http://pypi.python.org/simple/MySQL-python/
Best match: MySQL-python 1.2.3
Downloading https://pypi.python.org/packages/source/M/MySQL-python/MySQL-python-1.2.3.tar.gz#md5=215eddb6d853f6f4be5b4afc4154292f
Processing MySQL-python-1.2.3.tar.gz
Running MySQL-python-1.2.3\setup.py -q bdist_egg --dist-dir c:\users\quentin\appdata\local\temp\easy_install-cnlqlk\MySQL-python-1.2.3\egg-dist-tmp-iaalng
error: The system cannot find the file specified
So normally I would expect that 1.2.3 did not install, but I think it did because this command works...
python manage.py syncdb
So I'm kind of curious what that error message about not finding the system file is from.
I also tried installing v1.2.4 and I get a similar error about finding another file:
(django_tutorial) C:\django_projects\insults>easy_install file://c:/users/quentin/downloads/mysql-python-1.2.4.win-amd64-py2.7.exe
Processing mysql-python-1.2.4.win-amd64-py2.7.exe
creating 'c:\users\quentin\appdata\local\temp\easy_install-hz3ivi\MySQL_python-1.2.4-py2.7-win32.egg' and adding 'c:\users\quentin\appdata\local\temp\easy_install-hz3ivi\MySQL_python-1.2.4-py2.7-win32.egg.tmp' to it
Moving MySQL_python-1.2.4-py2.7-win32.egg to c:\virtualenvs\django_tutorial\lib\site-packages
Removing mysql-python 1.2.3 from easy-install.pth file
Adding MySQL-python 1.2.4 to easy-install.pth file
Installed c:\virtualenvs\django_tutorial\lib\site-packages\mysql_python-1.2.4-py2.7-win32.egg
Processing dependencies for MySQL-python==1.2.4
Searching for MySQL-python==1.2.4
Reading http://pypi.python.org/simple/MySQL-python/
Best match: MySQL-python 1.2.4
Downloading https://pypi.python.org/packages/source/M/MySQL-python/MySQL-python1.2.4.zip#md5=ddf2386daf10a97af115ffad2ed4a9a0
Processing MySQL-python-1.2.4.zip
Running MySQL-python-1.2.4\setup.py -q bdist_egg --dist-dir c:\users\quentin\appdata\local\temp\easy_install-v0_gfa\MySQL-python-1.2.4\egg-dist-tmp-2ltuob
Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.28.tar.gz
Extracting in c:\users\quentin\appdata\local\temp\easy_install-v0_gfa\MySQL-python-1.2.4\temp\tmpemj6wf
Now working in c:\users\quentin\appdata\local\temp\easy_install-v0_gfa\MySQL-python-1.2.4\temp\tmpemj6wf\distribute-0.6.28
Building a Distribute egg in c:\users\quentin\appdata\local\temp\easy_install-v0_gfa\MySQL-python-1.2.4
c:\users\quentin\appdata\local\temp\easy_install-v0_gfa\MySQL-python-1.2.4\distribute0.6.28-py2.7.egg
error: Setup script exited with error: Unable to find vcvarsall.bat
So yeah. Just kind of curious about those errors and whether or not I should be worried about them. I guess if things are working, I don't really have an problem but... others may also get confused about this and get stuck at the installation/setup part of working in django as well?
edit
ok it's not happy when I install 1.2.4, but if I just install 1.2.3 over it, syncdb works again.
MySQL-python 1.2.3/1.2.4
Django 1.5.1
XAMPP3.1.0, Apache2.4.3, MySQL5.5.32
Python 2.7.5 64-bit
Windows 7 64-bit

The main problem is here:
Setup script exited with error: Unable to find vcvarsall.bat
It means that your Cand C++ were not compiled. If you have installed Visual Studio 2012 recently, then follow my answer here, to find the solution to your problem.