Develop Reference

"Microsoft Visual C++ … is required" error when trying to install pyodbc on Windows

I am trying to install pyodbc, and I am getting the below error.
C:\Python\Python37\Scripts>pip3 install pyodbc
Output
Collecting pyodbc
Using cached https://files.pythonhosted.org/packages/aa/71/cef225c4889620a1a00251d24c1746fe0cf4124290a75d1c2dc5c187b61f/pyodbc-4.0.23.tar.gz
Installing collected packages: pyodbc
Running setup.py install for pyodbc ... error
Complete output from command c:\python\python37\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\Alankar\\AppData\\Local\\Temp\\pip-install-7qf14pkz\\pyodbc\\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\Alankar\AppData\Local\Temp\pip-record-k11gmg0x\install-record.txt --single-version-externally-managed --compile:
running install
running build
running build_ext
building 'pyodbc' 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
Command "c:\python\python37\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\Alankar\\AppData\\Local\\Temp\\pip-install-7qf14pkz\\pyodbc\\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\Alankar\AppData\Local\Temp\pip-record-k11gmg0x\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\Alankar\AppData\Local\Temp\pip-install-7qf14pkz\pyodbc\

I couldn't get the C++ build tools method to work, but I found this method to be very straightforward:
Download the relevant pyodbc wheel (pre-compiled binary) based on your computer's architecture and version of Python: https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyodbc
Run pip install <wheel path>.
For example:
pip install c:\users\bob\downloads\pyodbc-4.0.27-cp38-cp38-win_amd64.whl

Some Libraries require C++ build tools to install. In your case, to solve this problem there are two methods which are:
Update the pip's Setup tool:
To fix your error update the setup tool by this command:
pip install --upgrade setuptools
And the second method is to:
Install the Microsoft Visual C++ Build Tools
This can also be fixed by installing this little tool provided by Microsoft:
https://visualstudio.microsoft.com/visual-cpp-build-tools/

the install failed on my machine even after I installed Microsoft VC++ build tools, my solution for this is install an early version. the newer version assume you have VC++ and VS 2019 installed.
run this command
pip install -Iv pyodbc==4.0.27

If none of the other answers work:
I was running the newest version of python and it was giving me this error.
As soon as I downgraded to 3.8.x it worked like a charm using pip install

Failed building wheel for Twisted Command

I'm working on a crypto trading bot to interface with the Binance API. There has been a toolkit somebody has developed to interface with Binance easier (I haven't spent the time to learn Python HTTP Requests for REST APIs yet) and I am attempting to install this toolkit, which is where I am running into trouble.
The module wiki can be found here: https://python-binance.readthedocs.io/en/latest/
The error occurs while using !pip install python-binance in Spyder. I keep getting an error and have spent hours repairing my Visual C++ 2015, 2017, etc. and trying to find them to add to my python path in case that was the issue.
Omitting all of the installation steps it spits out in my python console, it errors once it reaches this point every time. Unfortunately that landing hub link page isn't found. I've gone to Microsoft and updated to the latest versions as well. I'm guessing this has somethign to do with my paths in spyder, but I can't even find the Visual files in my computer beyond Visual Studio 8.
building 'twisted.test.raiser' 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
---------------------------------------- Failed building wheel for Twisted Command "c:\users\g\anaconda3\python.exe -u -c "import
setuptools,
tokenize;file='C:\Users\G\AppData\Local\Temp\pip-install-eyvyab9r\Twisted\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\G\AppData\Local\Temp\pip-record-vdboumt8\install-record.txt
--single-version-externally-managed --compile" failed with error code 1 in C:\Users\G\AppData\Local\Temp\pip-install-eyvyab9r\Twisted\"

Django channels install failure in Windows 10

Here is the environment:
OS:windows 10
Django:2.0rc
Python:3.6
pip:10.0.0
visual studio community 2017
And the error message:
running build_ext
building 'twisted.test.raiser' 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
Command "c:\users\airy\appdata\local\programs\python\python36\python.exe -u -c "import setuptools,
tokenize;__file__='C:\\Users\\Airy\\AppData\\Local\\Temp\\pip-install-0a1gjuaj\\twisted\\
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\Airy\AppData\Local\Temp
\pip-record-k1vjz5aa\install-record.txt --single-version-externally-managed
--compile" failed with error code 1 in C:\Users\Airy\AppData\Local\Temp\pip-install-0a1gjuaj\twisted\
I have already installed the build tools following the link description but it still doesn't work. If someone has solved it, please tell me how to fixed it.

Download twisted from this link.
Downloading Twisted‑18.4.0‑cp36‑cp36m‑win32.whl worked for me because I'm using Python 3.6. Download the version according to the python that you use.
After you download Twisted from the given link, open up a cmd where the file is located and run pip install Twisted‑18.4.0‑cp36‑cp36m‑win32.whl. pip will install Twisted from this file.
If you're doing it in a virtualenv, activate the virtualenv and install Twisted after that in the same process.
After that, you'll be able to install channels or whatever.

if you followed the instructions as mention by #rahim.nagori and encounter the problem as mention by #DiptangsuGoswami. just download the 32bit version of twisted or 64bit (if what you used previously was 32bit). it worked for me!

Error while installing mysqlclient for python in Windows 10

I use this command for installing MySQL client:
pip install mysqlclient
And then I see this problem:
running build_ext
building '_mysql' extension
error: Microsoft Visual C++ 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279
Cleaning up... Command C:\Python34\python.exe -c "import setuptools,
tokenize;file='C:\Users\Jayed\AppData\Local\Temp\pip_build_Jayed\mysqlclient\setup.py';exec(compile(getattr(tokenize,
'open', open)(file).read().replace('\r\n', '\n'), file,
'exec'))" install --record
C:\Users\Jayed\AppData\Local\Temp\pip-l4c6dhkk-record\install-record.txt
--single-version-externally-managed --compile failed with error code 1 in C:\Users\Jayed\AppData\Local\Temp\pip_build_Jayed\mysqlclient
Storing debug log for failure in C:\Users\Jayed\pip\pip.log

Actually I went down this path. While I suppose you can find all the libraries and components you need to get the client to compile, it is telling you it can't find a compiled copy of the client and is trying to compile it to install it.
Follow the instructions here: https://pypi.org/project/mysqlclient/ (it has notes about windows doing what you are describing) or download the wheel file (from downloads link on the page) and type
pip install mysqlclient.whl
and it will install without demanding C++ in order to use mysql with python.

error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat). while installing Scrapy on Windows 10 64-bit

I am trying to install Scrapy.
I am getting this error. I know there are many questions exists on SO but none of a solution has worked for me.
building 'twisted.test.raiser' extension
error: Microsoft Visual C++ 10.0 is required (Unable to find vcvarsall.bat).
----------------------------------------
Command "c:\python34\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\Mani\\AppData\\Local\\Temp\\pip-build-eav78sdn\\Twisted\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record C:\Users\Mani\AppData\Local\Temp\pip-19_gmj4b-record\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\Mani\AppData\Local\Temp\pip-build-eav78sdn\Twisted\
I have these things installed in my computer
I have System Variable name:value is VS100COMNTOOLS:VS140COMNTOOLS
I also have OpenSSL installed in OpenSSL-Win64 and added to Windows PATH
I also have Microsoft Visual C++ Compiler for Python 2.7 installed.
What should I do? I have tried all solutions provided on SO but none worked.

I got this working.
Usually these require very particular versions of the Visual studios C++ compiler. In this case, following the steps listed on this page for the "Microsoft Visual C++ 10.0 standalone: Windows SDK 7.1" worked for getting twisted running (which is the package that's screwing up in this case)
If that doesn't work, you can find unofficial wheels here (learn more on wheels in general here)
Download the correct wheel (in this case, twisted) and follow these instructions to install it.
Hope this helps.