Develop Reference

Unable to instal django-heroku on mac

I am trying to host a Django app on Heroku. The app works fine on my computer as long as I don't use django-heroku (because I can't install it), and it works fine on Heroku as long as it does have django-heroku. This is not a pressing issue, but it is sort of annoying to have to remove django-heroku to make edits on my computer, and then have to re-insert it before pushing to heroku.
The ideal solution would be to get django-heroku installed on my computer.
Specifications:
Mac running macOS
Conda environment, python 3.7 and 3.8
Here is what I have found so far:
pip 20.0.2 from /Users/lucas/opt/anaconda3/lib/python3.7/site-packages/pip (python 3.7):
Cannot install django-heroku (See error below)
pip 20.1.1 from /Users/lucas/Library/Python/3.7/lib/python/site-packages/pip (python 3.7):
Can install django-heroku, however:
Gives me this warning: (still installs without any problems)
WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.
running the script with all pythons in the environment say no module called django_heroku
The first version of pip I specified that couldn't install django-heroku gives this error:
pip install django-heroku
Collecting django-heroku
Using cached django_heroku-0.3.1-py2.py3-none-any.whl (6.2 kB)
Collecting psycopg2
Using cached psycopg2-2.8.5.tar.gz (380 kB)
ERROR: Command errored out with exit status 1:
command: /Users/lucas/opt/anaconda3/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/setup.py'"'"'; __file__='"'"'/private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/pip-egg-info
cwd: /private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/
Complete output (23 lines):
running egg_info
creating /private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/pip-egg-info/psycopg2.egg-info
writing /private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/pip-egg-info/psycopg2.egg-info/PKG-INFO
writing dependency_links to /private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/pip-egg-info/psycopg2.egg-info/dependency_links.txt
writing top-level names to /private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/pip-egg-info/psycopg2.egg-info/top_level.txt
writing manifest file '/private/var/folders/r1/c30g6kr946l2czzpkr2mvrd80000gn/T/pip-install-q1m4s1hh/psycopg2/pip-egg-info/psycopg2.egg-info/SOURCES.txt'
Error: pg_config executable not found.
pg_config is required to build psycopg2 from source. Please add the directory
containing pg_config to the $PATH or specify the full executable path with the
option:
python setup.py build_ext --pg-config /path/to/pg_config build ...
or with the pg_config option in 'setup.cfg'.
If you prefer to avoid building psycopg2 from source, please install the PyPI
'psycopg2-binary' package instead.
For further information please check the 'doc/src/install.rst' file (also at
<https://www.psycopg.org/docs/install.html>).
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
I'm not an expert on how things like this work, so I included as much information as I could. I appreciate any help you can give on this.

First, django-heroku is no longer maintained, so my advice is to not use it.
Your problem, though is with psycopg2, as the error mentions, not django-heroku directly. Since django-heroku depends on psycopg2, installing psycopg2-binary probably won't help - and there can be issues with this as well, it's not suitable for serving your site from, although you're probably not doing that on OS X.
To get it working, you need to install the PostgreSQL libraries:
brew install postgresql
Depending on a few things, you may also have problems after that. If you see any errors about gcc and ssl, you can try running:
setenv LDFLAGS "-I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib"
For fish, or if you running bash:
export LDFLAGS="-I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib"
It can be tricky, so that may not be enough.

Python package cx_Oracle==5.1.3 Microsoft Visual C++ 9.0 is required for

Trying to install cx_Oracle==5.1.3 package onto windows 2012 server Through Jenkins. Using python 2.7 with setuptools-41.1.0.dist-info. I have installed Microsoft C++ Compiler for Python 9.0 but pip complains it can't find it
Run the pip install code from the command line and it works. Tried setting various paths, tried calling the C++ environment from Jenkins. Scoured the internet for advice, not getting anywhere :(
call "C:\Users*****\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0\vcvarsall.bat" x86_amd64
%WORKON_HOME%\emileTest\Scripts\pip install cx_Oracle==5.1.3
This is the Jenkins error log
Collecting cx_Oracle==5.1.3
Using cached https://files.pythonhosted.org/packages/be/25/afc07a79ed268f6ab2e8959cfcff997504ce09500b881a1d93f92904762e/cx_Oracle-5.1.3.tar.gz
Building wheels for collected packages: cx-Oracle
Building wheel for cx-Oracle (setup.py): started
Building wheel for cx-Oracle (setup.py): finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'c:\envs\emiletest\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'c:\windows\temp\pip-install-umf517\cx-Oracle\setup.py'"'"'; file='"'"'c:\windows\temp\pip-install-umf517\cx-Oracle\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' bdist_wheel -d 'c:\windows\temp\pip-wheel-kg80iv' --python-tag cp27
cwd: c:\windows\temp\pip-install-umf517\cx-Oracle\
Complete output (5 lines):
running bdist_wheel
running build
running build_ext
building 'cx_Oracle' extension
error: Microsoft Visual C++ 9.0 is required. Get it from http://aka.ms/vcpython27

To avoid this build problem with Jenkins, what I did is install the old cx_Oracle version under the default python site packages. I use virtualenv so I can create a virtual environment and basically tell it to inherit the default python site packages like this:
mkvirtualenv --system-site-packages env_name
So this environment will have access to the default cx_Oracle package. Since the requirement will already be satisfied, pip will not try to install it again when building in Jenkins.
I would love to upgrade a lot of things but it's just not seen as priority as long as everything works.

Installing pocketsphinx python module: command 'swig.exe' failed

I'm getting something like this. Can anyone please tell me how to fix this.
C:\Users\krush\Documents\ML using Python>pip install pocketsphinx
Collecting pocketsphinx
Using cached pocketsphinx-0.1.3.zip
Building wheels for collected packages: pocketsphinx
Running setup.py bdist_wheel for pocketsphinx: started
Running setup.py bdist_wheel for pocketsphinx: finished with status 'error'
Complete output from command C:\Users\krush\Anaconda3\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\krush\\AppData\\Local\\Temp\\pip-build-cns2i_wb\\pocketsphinx\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d C:\Users\krush\AppData\Local\Temp\tmp3tyvnl9wpip-wheel- --python-tag cp36:
running bdist_wheel
running build_ext
building 'sphinxbase._ad' extension
swigging swig/sphinxbase/ad.i to swig/sphinxbase/ad_wrap.c
swig.exe -python -modern -Ideps/sphinxbase/include -Ideps/sphinxbase/include/sphinxbase -Ideps/sphinxbase/include/win32 -Ideps/sphinxbase/swig -outdir sphinxbase -o swig/sphinxbase/ad_wrap.c swig/sphinxbase/ad.i
error: command 'swig.exe' failed: No such file or directory
----------------------------------------
Failed building wheel for pocketsphinx
Running setup.py clean for pocketsphinx
Failed to build pocketsphinx
Installing collected packages: pocketsphinx
Running setup.py install for pocketsphinx: started
Running setup.py install for pocketsphinx: finished with status 'error'
Complete output from command C:\Users\krush\Anaconda3\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\krush\\AppData\\Local\\Temp\\pip-build-cns2i_wb\\pocketsphinx\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\krush\AppData\Local\Temp\pip-x5mxeczy-record\install-record.txt --single-version-externally-managed --compile:
running install
running build_ext
building 'sphinxbase._ad' extension
swigging swig/sphinxbase/ad.i to swig/sphinxbase/ad_wrap.c
swig.exe -python -modern -Ideps/sphinxbase/include -Ideps/sphinxbase/include/sphinxbase -Ideps/sphinxbase/include/win32 -Ideps/sphinxbase/swig -outdir sphinxbase -o swig/sphinxbase/ad_wrap.c swig/sphinxbase/ad.i
error: command 'swig.exe' failed: No such file or directory
----------------------------------------
Command "C:\Users\krush\Anaconda3\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\krush\\AppData\\Local\\Temp\\pip-build-cns2i_wb\\pocketsphinx\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\krush\AppData\Local\Temp\pip-x5mxeczy-record\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\krush\AppData\Local\Temp\pip-build-cns2i_wb\pocketsphinx\

To fix the problem, I downloaded swig for windows at the time of writing this answer it was 3.0.12
For the latest swig windows version follow this link
Copy swig.exe to the python installation folder (for ex C:/python27)
Open the swigwin-3.0.12/Lib folder and copy all *.swg files to the C:/python27/Lib or equivalent python path
Open swigwin-3.0.12/Lib/python and copy all the files to C:/python27/Lib
Open the swigwin-3.0.12/Lib folder and copy over the typemaps folder to C:/python27/Lib
(Also make sure you have Microsoft Visual C++ Compiler for Python installed)
These steps worked for me.

conda install swig
pip install pocketsphinx
I didn't want to do all that setup other people are suggesting so I tried this and it worked.
This probably only works if you are using Anaconada though.

Instead of copying Swig files to the Python folder, you can simply add Swig`s location to the environment variables:
Press Ctrl+S
Type env and press Enter
Double click on Path
Add the path-to-Swig to the last blank line
Click OK and restart your PC

You try to install pocketsphinx with pip, that will download and compile this module. It requires some compiling tool like swig.
Another solution is to install a binary version of pocketsphinx. You can download a binary version here. You have to select the correct version with respect to your installation.
To determine which one you have to download, you can run the following commands, that will tell you which version you require and whether you run a 32 or 64 bit python interpreter.
"C:\Users\krush\Anaconda3\python.exe" --version
"C:\Users\krush\Anaconda3\python.exe" -c "import struct;print(struct.calcsize('P') * 8)"
Below are some commands that you may enter once you have downloaded the correct version
"C:\Users\krush\Anaconda3\python.exe" -m pip install pocketsphinx‑0.1.3‑cp35‑cp35m‑win32.whl
"C:\Users\krush\Anaconda3\python.exe" -m pip install pocketsphinx‑0.1.3‑cp36‑cp36m‑win_amd64.whl

I was also getting same error, while installing in ubuntu 16.04, I executed following commands:
sudo apt-get install -y python python-dev python-pip build-essential swig git libpulse-dev
sudo pip install pocketsphinx
source: pocketsphinx-python

In case you are working on anaconda navigator.
Just go to environment.
Search swig, your package will be displayed. Select the package and click on apply button.
It will also give a prompt list of other dependencies, which need to be installed with swig.
So just select all and click on apply button.
All the dependencies will be installed in your root directory of anaconda.
This worked for me, hope it helps.

There are few set of commands to resolve this. Just execute them:
sudo apt-get install -y python3 python3-dev python3-pip build-essential swig git libpulse-dev
sudo apt-get install libasound2-dev
sudo pip install pocketsphinx

what works for me is installing swing from conda and
conda install swig
if installed search where it is installed
where swig
then add that path to your environment variable

For mac users getting similar issues, there seems to be a problem with the current pip install framework. I followed this thread and used the solution linked. It doesn't seem like there will be a pip fix anytime soon.
Note you'll have to brew install swig before running the above steps - homebrew install link.

pip install pipwin
python -m pipwin install pocketsphinx
You can also use pipwin to install pocketsphinx.

For a purely pip-based fix (may or not work depending on your exact issue/system):
pip install swig
pip install pocketsphinx
pip freeze > requirements.txt
Fixed the issue simply for me. With pip freeze, you're likely to not have the issue again if cloning the project in another system (since swig will be installed just with pip install -r requirements.txt)
This is the kind of things for which it becomes REALLY worthwhile to look into using virtualenv or similar, instead of polluting (and endlessly re-configuring) your system.

I know I am late, but what worked for me was to download the pre-built wheel file and install it manually (tested on Windows. I am pretty sure it will only work on Windows).
https://www.lfd.uci.edu/~gohlke/pythonlibs/#pocketsphinx
Just grab the right one (cp39 = python 3.9). When it finishes downloading, navigate to your downloads folder in cmd, and issue the following command:
pip install pocketsphinx-0.1.15-cp39-cp39-win_amd64.whl
NOTE: Change pocketsphinx-0.1.15-cp39-cp39-win_amd64.whl to the name of the whl file you downloaded. I grabbed this one because I use Python 3.9 64bit version.

How do I install openbabel for Python 3.6 in Windows 10?

I am using Python for making a script to work with some chemical structures in my PhD. I want to install openbabel libraries for python. I tried my best but I could not install it. It always gives error:
Error: SWIG failed. Is Open Babel installed?
Here is the Python Path on my PC: C:\Users\malih\AppData\Local\Programs\Python\Python36-32. Openbabel is installed at the following path C:\Program Files (x86)\OpenBabel-2.3.1.
When I run python -m pip install openbabel, it gives the following error:
C:\Users\malih>python -m pip install openbabel
Collecting openbabel
Using cached openbabel-2.4.1.tar.gz
Installing collected packages: openbabel
Running setup.py install for openbabel ... error
Complete output from command C:\Users\malih\AppData\Local\Programs\Python\Python36-32\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\malih\\AppData\\Local\\Temp\\pip-build-glr82a7x\\openbabel\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\malih\AppData\Local\Temp\pip-02z3p_a9-record\install-record.txt --single-version-externally-managed --compile:
running install
running build_ext
Warning: pkg-config could not be found.
Guessing Open Babel location:
- include_dirs: ['C:\\Users\\malih\\AppData\\Local\\Programs\\Python\\Python36-32\\include', 'C:\\Users\\malih\\AppData\\Local\\Programs\\Python\\Python36-32\\include', '/usr/local/include/openbabel-2.0']
- library_dirs: ['C:\\Users\\malih\\AppData\\Local\\Programs\\Python\\Python36-32\\libs', 'C:\\Users\\malih\\AppData\\Local\\Programs\\Python\\Python36-32\\PCbuild\\win32', '/usr/local/lib']
building '_openbabel' extension
swigging openbabel-python.i to openbabel-python_wrap.cpp
swig.exe -python -c++ -small -O -templatereduce -naturalvar -IC:\Users\malih\AppData\Local\Programs\Python\Python36-32\include -IC:\Users\malih\AppData\Local\Programs\Python\Python36-32\include -I/usr/local/include/openbabel-2.0 -o openbabel-python_wrap.cpp openbabel-python.i
Error: SWIG failed. Is Open Babel installed?
You may need to manually specify the location of Open Babel include and library directories. For example:
python setup.py build_ext -I/usr/local/include/openbabel-2.0 -L/usr/local/lib
python setup.py install
----------------------------------------
Command "C:\Users\malih\AppData\Local\Programs\Python\Python36-32\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\malih\\AppData\\Local\\Temp\\pip-build-glr82a7x\\openbabel\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\malih\AppData\Local\Temp\pip-02z3p_a9-record\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\malih\AppData\Local\Temp\pip-build-glr82a7x\openbabel\
I tried to follow the instructions on this page but they are purely for linux and I could not follow up them for Windows:
How do I use python-openbabel in Travis CI?
I also tried to install pkg-config from the following guide but even after that, it gives the same error:
How to install pkg config in windows?
Please help me on this as my work is based on this and I am stuck at this point. Thanks in advance for your time.

pip install is notoriously non-windows friendly. Either go to openbabel website and download + install windows binary, then download + install python binding, or use the unoffical official openbabel python windows build, then cd into the downloaded directory, and perform pip install OPENBABEL_FILE_WINDOWS.whl
I recently had do some quite a bit of work on 2D mol file -> 3D mol file translation using openbabel. Let me know how it works out for you.
--
edit: I should also add, python3.x is breakingly different to python2.x. So if anything breaks, try it with python2.x

This is somewhat old, but the problems still persist so i'll answer nonetheless.
The precompiled Windows binary (most likely) doesn't come with SWIG built-in, which in turn doesn't offer language bindings and gives you the error when installing from pip.
A workaround to this is to install a wheel from the unofficial Windows binaries website just like pandamakes answered.
However, the wheels already comes bundled with a precompiled obabel, so you really don't need to install the windows binaries version (the one that comes with the setup and all), but you have to know that if you're willing to ship a python script that uses this library, know that it will interfere with systems that do have BABEL_DIR in the environment variables, to fix this you have to include the whole openbabel directory from YourPythonDirectory/lib/site-packages/. in your script's folder.
Another important note is that some babel builds from the unofficial binaries website have a bug where they do not detect all file formats, especially the most common ones like sdf/pdb/mol2 or even smiles. The only versions i have confirmed working somewhat flawlessly so far are the openbabel‑3.1.1‑cp36‑cp36m‑win32.whl and openbabel‑3.1.1‑cp38‑cp38‑win32.whl.

Issues Installing Python Modules Under Windows

I am trying to setup a Python development environment in Visual Studio 2013 using the new PTVS. However, I need to be able to develop in both Python 2.7 and Python 3.3. Here's what I have done so far for both versions:
Installed distribute
Installed pip
Added C:\Python 3.3\Scripts & C:\Python 2.7\Scripts to my Path environment variable.
So in the Scripts folders I have:
easy_install.exe
easy_install-3.3.exe
pip.exe
pip-3.3.exe
easy_install.exe
easy_install-2.7.exe
pip.exe
pip-2.7.exe
Along with the executables are the corresponding python scripts.
Now having done this, I am trying to install a Python module RPi.GPIO, but I am getting the following error message:
C:\Windows\system32>pip-2.7 install RPi.GPIO==0.5.3a
Downloading/unpacking RPi.GPIO==0.5.3a
Downloading RPi.GPIO-0.5.3a.tar.gz
Running setup.py egg_info for package RPi.GPIO
Installing collected packages: RPi.GPIO
Running setup.py install for RPi.GPIO
building 'RPi.GPIO' extension
error: Unable to find vcvarsall.bat
Complete output from command "C:\Program Files\Python 2.7\python.exe" -c "import set
uptools;__file__='c:\\users\\jon\\appdata\\local\\temp\\pip_build_Jon\\RPi.GPIO\\setup.p
y';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install
--record c:\users\jon\appdata\local\temp\pip-svl0a1-record\install-record.txt --single-
version-externally-managed:
running install
running build
running build_py
creating build
creating build\lib.win-amd64-2.7
creating build\lib.win-amd64-2.7\RPi
copying RPi\__init__.py -> build\lib.win-amd64-2.7\RPi
running build_ext
building 'RPi.GPIO' extension
error: Unable to find vcvarsall.bat
----------------------------------------
Cleaning up...
Command "C:\Program Files\Python 2.7\python.exe" -c "import setuptools;__file__='c:\\use
rs\\jon\\appdata\\local\\temp\\pip_build_Jon\\RPi.GPIO\\setup.py';exec(compile(open(__fi
le__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record c:\users\jon\ap
pdata\local\temp\pip-svl0a1-record\install-record.txt --single-version-externally-manage
d failed with error code 1 in c:\users\jon\appdata\local\temp\pip_build_Jon\RPi.GPIO
Storing complete log in C:\Users\Jon\pip\pip.log
C:\Windows\system32>
It's trying real hard, but it is failing somewhere, and I can't trace it back to the source. Likewise, I always get the error: Unable to find vcvarsall.bat know matter what module I try to install. What would cause this?
I have tried removed one of the interpreters path from the environment variables, because I thought that the duplicate easy_install.exe instances might be conflicting. Making this change didn't help.
Should the install be nearly as simple as:
pip-2.7 install RPi.GPIO==0.5.3a
or
pip-3.3 install RPi.GPIO==0.5.3a
UPDATE: I just tried install RPi.GPIO by using the command:
pip-3.3 install RPi.GPIO
and it was successfully installed, but the version is way out of date. Hm..?