I am trying to install CPLEX studio 12.10 to Python 3.8. I'm using Visual studio code editor.
Referring to https://www.ibm.com/support/knowledgecenter/en/SSSA5P_12.8.0/ilog.odms.cplex.help/CPLEX/GettingStarted/topics/set_up/Python_setup.html, I use the command "python setup.py install --home C:\Program Files\IBM\ILOG\CPLEX_Studio1210\cplex\python\3.7\x64_win64". But error " can't open file 'setup.py': [Errno 2] No such file or directory" is appeared.
How to solve this problem?. I also checked that setup.py is in the above folder.
You need to find setup.py first by going the folder that CPLEX is installed (use the path you wrote after install --home). Furthermore, the path after install --home is to the directory where your Python is installed. See this answer for details.
Also, CPLEX 12.10 doesn't support Python 3.8 for now.
There is a workaround for this problem if you are able to modify the underlying python library shipped with CPLEX. Essentially, the python interface is the same, but the program will check your python version and prevent you from installing and using it if the version does not match.
Go to /path/to/installation/cplex/python, you should see 2 directories (3.6 and 3.7). Make a copy of 3.7 and rename it as your python version, for example, 3.8 or 3.9. In /path/to/installation/cplex/python/<your_python_version>/<your_os>/setup.py and /path/to/installation/cplex/python/<your_python_version>/<your_os>/cplex/_internal/_pycplex_platform.py, remove the code that checks python version.
The above is tested on x86_64 Linux with python 3.9.2 using the official docplex library (you will need to export an environmental variable, see the official documentation). I suppose if you run setup.py to install the cplex python libaray, it should also work. Beware this is not officially supported, and do it at your own risk.
I've installed Python 3.5 and while running
pip install mysql-python
it gives me the following error
error: Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)
I have added the following lines to my Path
C:\Program Files\Python 3.5\Scripts\;
C:\Program Files\Python 3.5\;
C:\Windows\System32;
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC;
C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC
I have a 64-bit Windows 7 setup on my PC.
What could be the solution for mitigating this error and installing the modules correctly via pip.
Your path only lists Visual Studio 11 and 12, it wants 14, which is Visual Studio 2015. If you install that, and remember to tick the box for Languages → C++ then it should work.
On my Python 3.5 install, the error message was a little more useful, and included the URL to get it from:
error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools
New working link.
As suggested by Fire, you may also need to upgrade setuptools package for the error to disappear:
pip install --upgrade setuptools
Binary install it the simple way!
Use the binary-only option for pip. For example, for mysqlclient:
pip install --only-binary :all: mysqlclient
Many packages don't create a build for every single release which forces your pip to build from source. If you're happy to use the latest pre-compiled binary version, use --only-binary :all: to allow pip to use an older binary version.
To solve any of the following errors:
Failed building wheel for misaka
Failed to build misaka
Microsoft Visual C++ 14.0 is required
Unable to find vcvarsall.bat
The solution is:
Go to Build Tools for Visual Studio 2017
Select free download under Visual Studio Community 2017. This will download the installer. Run the installer.
Select what you need under workload tab:
a. Under Windows, there are three choices. Only check Desktop development with C++.
b. Under Web & Cloud, there are seven choices. Only check Python development (I believe this is optional, but I have done it).
In cmd, type pip3 install misaka.
Note if you already installed Visual Studio then when you run the installer, you can modify yours (click modify button under Visual Studio Community 2017) and do steps 3 and 4.
Final note: If you don't want to install all modules, having the three below (or a newer version of the VC++ 2017) would be sufficient. (You can also install the Visual Studio Build Tools with only these options, so you don’t need to install Visual Studio Community Edition itself) => This minimal install is already a 4.5 GB, so saving off anything is helpful
As the other responses point out, one solution is to install Visual Studio 2015. However, it takes a few GBs of disk space.
One way around is to install precompiled binaries. The webpage Unofficial Windows Binaries for Python Extension Packages (mirror) contains precompiled binaries for many Python packages. After downloading the package of interest to you, you can install it using pip install, e.g. pip install mysqlclient‑1.3.10‑cp35‑cp35m‑win_amd64.whl.
I had the exact issue while trying to install the Scrapy web scraping Python framework on my Windows 10 machine. I figured out the solution this way:
Download the latest (the last one) wheel file from this link: wheel file for twisted package
I'd recommend saving that wheel file in the directory where you've installed Python, i.e., somewhere on the local disk C:
Then visit the folder where the wheel file exists and run pip install <*wheel file's name*>
Finally, run the command pip install Scrapy again and you're good to use Scrapy or any other tool which required you to download a massive Windows C++ Package/SDK.
Disclaimer: This solution worked for me while trying to install Scrapy, but I can't guarantee the same happening while installing other software, packages, etc.
After reading a lot of answers on Stack Overflow and none of them working, I finally managed to solve it following the steps in this question. I will leave the steps here in case the page disappears:
Please try to install Build Tools for Visual Studio 2017, select the workload “Visual C++ build tools” and check the options "C++/CLI support" and "VC++ 2015.3 v14.00 (v140) toolset for desktop" as below.
I had this exact issue while trying to install mayavi.
I also had the common error: Microsoft Visual C++ 14.0 is required when pip installing a library.
After looking across many web pages and the solutions to this question, with none of them working, I figured out these steps (most taken from previous solutions) allowed this to work.
Go to Build Tools for Visual Studio 2017 and install Build Tools for Visual Studio 2017. Which is under All downloads (scroll down) → Tools for Visual Studio 2017
If you have already installed this, skip to 2.
Select the C++ components you require (I didn't know which I required, so I installed many of them).
If you have already installed Build Tools for Visual Studio 2017 then open the application Visual Studio Installer then go to Visual Studio Build Tools 2017 → Modify → Individual Components and selected the required components.
From other answers, important components appear to be: C++/CLI support, VC++ 2017 version <...> latest, Visual C++ 2017 Redistributable Update, Visual C++ tools for CMake, Windows 10 SDK <...> for Desktop C++, Visual C++ Build Tools core features, Visual Studio C++ core features.
Install/Modify these components for Visual Studio Build Tools 2017.
This is the important step. Open the application Visual Studio Installer then go to Visual Studio Build Tools → Launch. Which will open a CMD window at the correct location for Microsoft Visual Studio\YYYY\BuildTools.
Now enter python -m pip install --upgrade setuptools within this CMD window.
Finally, in this same CMD window, pip install your Python library: pip install -U <library>.
Use this link to download and install Visual C++ 2015 Build Tools. It will automatically download visualcppbuildtools_full.exe and install Visual C++ 14.0 without actually installing Visual Studio.
After the installation completes, retry pip install and you won't get the error again.
I have tested it on the following platforms and versions:
Python 3.6 on Windows 7 64-bit
Python 3.8 on Windows 10 64-bit
Use this and save time
pip install pipwin
pipwin install yourLibrary
pipwin is like pip, but it installs precompiled Windows binaries provided by Christoph Gohlke. Saves you a lot of time googling and downloading.
And in this case pipwin will solve the problem
Error: Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)
Read more about pipwin and here they mention Microsoft Visual C++
I had the same problem when installing the spaCy module. And I checked the control panel, and I had several Microsoft Visual C++ redistributables installed already.
I selected "Microsoft Visual Studio Community 2015" which was already installed on my PC → "Modify" → check "Common Tools for Visual C++ 2015". Then it will take some time and download more than 1 GB to install it.
This fixed my issue. Now I have spaCy installed.
I had this same problem. A solution for updating setuptools
pip install -U setuptools
or
pip install setuptools --upgrade
Make sure that you've installed these required packages. It worked perfectly in my case as I installed the checked packages:
To expand on the answers by ocean800, davidsheldon and user3661384:
You should now no longer use Visual Studio Tools 2015 since a newer version is available. As indicated by the Python documentation, you should be using Visual Studio Tools 2017 instead.
Visual C++ Build Tools 2015 was upgraded by Microsoft to Build Tools for Visual Studio 2017.
Download it from here.
You will also require setuptools. If you don't have setup tools, run:
pip install setuptools
Or if you already have it, be sure to upgrade it.
pip install setuptools --upgrade
For the Python documentation link above you will see that setuptools version must be at least 34.4.0 for Visual Studio Tools to work.
Use the link to Visual C++ 2015 Build Tools. That will install Visual C++ 14.0 without installing Visual Studio.
I had the same issue. Downloading the Build Tools for Visual Studio 2017 worked for me.
I had exactly the same issue and solved it by installing mysql-connector-python with:
pip install mysql-connector-python
I am on Python 3.7 and Windows 10 and installing Microsoft Build Tools for Visual Studio 2017 (as described here) did not solve my problem that was identical to yours.
Just go to https://www.lfd.uci.edu/~gohlke/pythonlibs/ find your suitable package (whl file). Download it. Go to the download folder in cmd or typing 'cmd' on the address bar of the folder. Run the command :
pip install mysqlclient-1.4.6-cp38-cp38-win32.whl
(Type the file name correctly. I have given an example only). Your problem will be solved without installing build toll cpp of 6GB size.
To add on top of Sushant Chaudhary's answer:
In my case, I got another error regarding lxml as below:
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt -> build\lib.win-amd64-3.7\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools
I had to install lxml‑4.2.3‑cp37‑cp37m‑win_amd64.whl the same way as in the answer of Sushant Chaudhary to successfully complete installation of Scrapy.
Download lxml‑4.2.3‑cp37‑cp37m‑win_amd64.whl from Lxml
put it in folder where Python is installed
install it using pip install <file-name>
Now you can run pip install scrapy.
I had the same exact issue on my windows 10 python version 3.8.
In my case, I needed to install mysqlclient were the error occurred Microsoft Visual C++ 14.0 is required. Because installing visual studio and it's packages could be a tedious process, Here's what I did:
step 1 - Go to unofficial python binaries from any browser and open its website.
step 2 - press ctrl+F and type whatever you want. In my case it was mysqlclient.
step 3 - Go into it and choose according to your python version and windows system. In my case it was mysqlclient‑1.4.6‑cp38‑cp38‑win32.whl and download it.
step 4 - open command prompt and specify the path where you downloaded your file. In my case it was C:\Users\user\Downloads
step 5 - type pip install .\mysqlclient‑1.4.6‑cp38‑cp38‑win32.whl and press enter.
Thus it was installed successfully, after which I went my project terminal re-entered the required command. This solved my problem
Note that, while working on the project in pycharm, I also tried installing mysql-client from the project interpreter. But mysql-client and mysqlclient are different things. I have no idea why and it did not work.
I had a similar situation installing pymssql.
pip was trying to build the package, because there were no official wheels for Python 3.6 and Windows.
I solved it by downloading an unofficial wheel from Unofficial Windows Binaries for Python Extension Packages.
Specifically for your case: MySQL-python
I just had the same issue while using the latest Python 3.6. With Windows OS 10 Home Edition and a 64-bit operating system.
Steps to solve this issue:
Uninstall any versions of Visual Studio you have had, through Control Panel
Install Visual Studio 2015 and chose the default option that will install
Visual C++ 14.0 on its own
You can use PyCharm for installing Scrapy: Menu Project → Project Interpreter → + (install Scrapy)
Check Scrapy in the REPL and PyCharm by import. You should not see any errors.
None of the solutions here and elsewhere worked for me. It turns out an incompatible 32-bit version of mysqlclient is being installed on my 64-bit Windows 10 OS because I'm using a 32-bit version of Python.
I had to uninstall my current Python 3.7 32 bit, and reinstalled Python 3.7 64 bit and everything is working fine now.
If Visual Studio is NOT your thing, and instead you are using VS Code, then this link will guide you thru the installer to get C++ running on your Windows.
You only needs to complete the Pre-Requisites part.
https://code.visualstudio.com/docs/cpp/config-msvc/#_prerequisites
This is similar with other answers, but this link will probably age better than some of the responses here.
PS: don't forget to run pip install --upgrade setuptools
This works for me:
pip install --only-binary :all: mysqlclient
I tried ALL of the above and none worked. Just before before signing up for the booby hatch, I found another reason for the error : using the wrong shell on Windows.
conda init cmd.exe
did the trick for me. Hope it may save someone else, too.
I was facing the same problem. The following worked for me:
Download the unofficial binaries file from Christoph Gohlke installers site as per the Python version installed on your system.
Navigate to the folder where you have installed the file and run
pip install filename
For me python_ldap‑3.0.0‑cp35‑cp35m‑win_amd64.whl worked as my machine is 64 bit and Python version is 3.5.
This successfully installed python-ldap on my Windows machine. You can try the same for mysql-python.
Look if the package has an official fork that include the necessary binary wheels.
I needed the package python-Levenshtein, had this error, and found the package python-Levenshtein-wheels instead.
I had the same problem. I needed a 64-bit version of Python so I installed 3.5.0 (the most recent as of writing this). After switching to 3.4.3 all of my module installations worked.
Python Releases for Windows
I had the same issue while installing mysqlclient for the Django project.
In my case, it's the system architecture mismatch causing the issue. I have Windows 7 64bit version on my system. But, I had installed Python 3.7.2 32 bit version by mistake.
So, I re-installed Python interpreter (64bit) and ran the command
pip install mysqlclient
I hope this would work with other Python packages as well.
TLDR run vcvars64.bat
After endlessly searching through similar questions with none of the solutions working.
-Adding endless folders to my path and removing them. uninstalling and reinstalling visual studio commmunity and build tools.
and step by step attempting to debug I finally found a solution that worked for me.
(background notes if anyone is in a similar situation)
I recently reset my main computer and after reinstalling the newest version of python (Python3.9) libraries I used to install with no troubles (main example pip install opencv-python) gave
cl
is not a full path and was not found in the PATH.
after adding cl to the path from
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110\bin\Hostx64\x64
and several different windows kits one at a time getting the following.
The C compiler
"C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.27.29110/bin/Hostx64/x64/cl.exe"
is not able to compile a simple test program.
with various link errors or " Run Build Command(s):jom /nologo cmTC_7c75e\fast && The system cannot find the file specified"
upgrading setuptools and wheel from both a regular command line and an admin one did nothing as well as trying to manually download a wheel or trying to install with --only-binary :all:
Finally the end result that worked for me was running the correct vcvars.bat for my python installation namely running
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat" once (not vcvarsall or vcvars32) (because my python installed was 64 bit) and then running the regular command pip install opencv-python worked.
This question already has answers here:
error: Unable to find vcvarsall.bat
(42 answers)
Closed 7 years ago.
I tried to install Scrapy for Python 2.7.8 (anaconda 2.1.0) 32-bit using
pip install scrapy
And I got this error
error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat).
I have followed the solutions found in these stackover flow questions. Nothing worked.
Microsoft Visual C++ Compiler for Python 2.7
Can't find vcvarsall.bat file
error: Unable to find vcvarsall.bat
Getting "error: Unable to find vcvarsall.bat" when running "pip install numpy" on windows7 64bit
pip install gives error: Unable to find vcvarsall.bat
How do I point easy_install to vcvarsall.bat?
pip install MySQL-python returns unable to find vcvarsall.bat
This is the error, and a few lines above and below it:
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt
-> build\lib.win32-3.4\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
C:\Python34\lib\distutils\dist.py:260: UserWarning: Unknown distribution opt
ion: 'bugtrack_url'
warnings.warn(msg)
error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat).
----------------------------------------
Command "C:\Python34\python.exe -c "import setuptools, tokenize;__file__='C:
\\Users\\San\\AppData\\Local\\Temp\\pip-build-wp6ei6r9\\lxml\\setup.py';exec(com
pile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __f
ile__, 'exec'))" install --record C:\Users\San\AppData\Local\Temp\pip-kfkzr_67-r
ecord\install-record.txt --single-version-externally-managed --compile" failed w
ith error code 1 in C:\Users\San\AppData\Local\Temp\pip-build-wp6ei6r9\lxml
I have both Microsoft Visual Studio 12.0, and Microsoft visual C++ compiler package for Python 2.7, both of which have the vcvarsall.bat file.
I have a system variable that is called 'VS120COMNTOOLS' and is its path is set to
C:\Program Files\Microsoft Visual Studio 12.0\Common7\Tools\
I also added both paths to my environment variables. I've also tried just adding one, and then the other. My Path looks like this
C:\Program Files\Java\jdk1.7.0_25\bin;\Python27;\Python2\python.exe;C:\Python27\Scripts\;C:\Users\San\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0\;C:\Program Files\Microsoft Visual Studio 12.0\VC\;
I also updated by my setup tools (I think to version 8), which should autodetect Microsoft Visual C++ Compiler for Python 2.7. However, I'm still getting the same error.
I have also tried using
easy_install scrapy
And I get this error
error: Setup script exited with error: Microsoft Visual C++ 10.0 is required (Un
able to find vcvarsall.bat).
I also have the following in my registry
HKEY_LOCAL_MACHINE\Software\Microsoft\VisualStudio\9.0\Setup\VC\ProductDir
HKEY_LOCAL_MACHINE\Software\Microsoft\VisualStudio\12.0\Setup\VC\ProductDir
I have tried all suggestions and found my own simple solution.
The problem is that codes written in external environment like C need compiler. Look for its own VS environment, i.e. VS 2008.
Currently my machine runs VS 2012 and faces Unable to find vcvarsall.bat.
I studied codes that i want to install to find the VS version. It was VS 2008. i have add to system variable VS90COMNTOOLS as variable name and gave the value of VS120COMNTOOLS.
You can find my step by step solution below:
Right click on My Computer.
Click Properties
Advanced system settings
Environment variables
Add New system variable
Enter VS90COMNTOOLS to the variable name
Enter the value of current version to the new variable.
Close all windows
Now open a new session and pip install your-package
After doing a lot of things, I upgraded pip, setuptools and virtualenv.
python -m pip install -U pip
pip install -U setuptools
pip install -U virtualenv
I did steps 1, 2 in my virtual environment as well as globally.
Next, I installed the package through pip and it worked.
Try installing this, it's a known workaround for enabling the C++ compiler for Python 2.7.
In my experience, when pip does not find vcvarsall.bat compiler, all I do is opening a Visual Studio console as it set the path variables to call vcvarsall.bat directly and then I run pip on this command line.
I was getting the same error in python 3.4.3 too and I tried using the solutions mentioned here and elsewhere with no success.
Microsoft makes a compiler available for Python 2.7 but it didn't do me much good since I am on 3.4.3.
Python since 3.3 has transitioned over to 2010 and you can download and install Visual C++ 2010 Express for free here: https://www.visualstudio.com/downloads/download-visual-studio-vs#d-2010-express
Here is the official blog post talking about the transition to 2010 for 3.3: http://blog.python.org/2012/05/recent-windows-changes-in-python-33.html
Because previous versions gave a different error for vcvarsall.bat I would double check the version you are using with "pip -V"
C:\Users\B>pip -V
pip 6.0.8 from C:\Python34\lib\site-packages (python 3.4)
As a side note, I too tried using the latest version of VC++ (2013) first but it required installing 2010 express.
From that point forward it should work for anyone using the 32 bit version, if you are on the 64 bit version you will then get the ValueError: ['path'] message because VC++ 2010 doesn't have a 64 bit compuler. For that you have to get the Microsoft SDK 7.1. I can't hyperlink the instruction for 64 bit because I am limited to 2 links per post but its at
Python PIP has issues with path for MS Visual Studio 2010 Express for 64-bit install on Windows 7
Here too I can reproduce this problem with scrapy and psycopg2 (both require C++ compiling), even though I have Microsoft Visual C++ Compiler for Python 2.7 installed.
It has to be noted that I use virtualenv. From your post I'm not sure whether you do the same.
Anyway I tried to skip the activation of the virtual environment. Then both scrapy and psycopg2 installed fine.
My hypothesis: there is a conflict between this 2014 C++ compiler for Python and virtualenv.
I do not know why nor how to solve it (and I'd be glad if someone can suggest a workaround).
I downloaded http://pytools.codeplex.com/ (Python Tools for Visual Studio) so that I could write Python in Visual Studio.
The problem is when I try to use the most basic package "numpy" like so:
import numpy
It says "No module named 'numpy'."
How can I use NumPy and SciPy in Visual Studio?
Note: I am using Canopy Express on another machine which works perfectly; however, I don't want to install it on this machine since I already have Visual Studio installed.
I added the Python 3.3 environment to my Python "solution" by right-clicking Python environments and clicking add an environment. But, after right-clicking my environment and clicking install Python package, I typed in "numpy" and got this error when trying to install it:
...
creating build
creating build\src.win32-3.3
creating build\src.win32-3.3\numpy
creating build\src.win32-3.3\numpy\distutils
building library "npymath" sources
No module named 'numpy.distutils.msvccompiler' in numpy.distutils; trying from distutils
error: Unable to find vcvarsall.bat
----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in c:\users\dom\appdata\local\temp\pip_build_Dom\numpy
Storing complete log in C:\Users\Dom\pip\pip.log
'numpy' failed to install. Exit code: 1
How can I install NumPy?
In Visual Studio 2013 Community Edition with a Python 2.7 environment, the following worked for me:
Open the Python Environments menu in Solution Explorer, and click on "Install Python Package..."
Then write "numpy":
Two solutions worked for me:
Going directly to my Python folder and installing the packages using pip.
Creating a virtual environment in my project and installing packages from within Visual Studio.
Consider using a more feature-rich Windows distribution of Python, like Anaconda. It comes with a boatload of packages included into the installer. This is quite handy for those who are new to Python, especially when they are using Windows.
Edit:
As of 2020, I would suggest using the python.org distribution of Python. Compiler issues on ms-windows have finally been fixed, so a lot of projects now provide binary packages (wheels) for ms-windows. Among others numpy, pandas, matplotlib, pillow, Cython and PyNaCl.
Note that wheel names ending in:
win_amd64.whl are for 64-bit versions of ms-windows, and
win32.whl are for 32-bit.
I actually ran into the same set of problems when trying to use Visual Studio for Python.
I managed to get things to work at the end - please see Using Visual Studio 2013 for Python (3.4) with NumPy and SciPy on Windows for details. Essentially you can either use the installer (if one is available) or use pip to do the installation.
Make sure C++ Common Tools are installed in Visual Studio:
See under Extra in the Visual Studio (Extra-Python-Interactive Window).
It has the ability to switch the interactive console through a different platform/Python version (32-bit, 64-bit, Debug, and Anaconda (which has the NumPy package)).
From PTVS Installation:
2. Installing packages individually
Here are some recommended packages. Generally you want to install packages using pip or through the interface in Visual Studio (which uses pip), as this will ensure that you get the latest version that will work with your version of Python, as well as any dependencies.
Some packages have complex dependencies and need to be downloaded manually, either from the project's website or from Christoph Gohlke's package collection.
I installed numpy and scipy from these links, and it works perfectly with Visual Studio.
numpy http://sourceforge.net/projects/numpy/files/NumPy/
scipy http://sourceforge.net/projects/scipy/files/scipy/
Matplotlib http://matplotlib.org/downloads.html
Pandas http://pandas.pydata.org/getpandas.html
Well, if anyone still has problem than what worked for me is:
C:/Users/DELL/AppData/Local/Programs/Python/Python39/python.exe -m pip install numpy
where the first part is simply the path of python.