Pip error: Microsoft Visual C++ 14.0 is required
pycrypto, python, python-3.6, python-3.x
Solution
You need to install Microsoft Visual C++ 14.0 to install pycrypto:
error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools
In the comments you ask which link to use. Use the link to Visual C++ 2015 Build Tools. That will install Visual C++ 14.0 without installing Visual Studio.
Alternate link: https://wiki.python.org/moin/WindowsCompilers#Microsoft_Visual_C.2B-.2B-_14.2_standalone:_Build_Tools_for_Visual_Studio_2019_.28x86.2C_x64.2C_ARM.2C_ARM64.29
In the comments you ask about methods of installing `pycrypto` that do not require installing a compiler. The binaries in the links appear to be for earlier versions of Python than you are using. One link is to a binary in a DropBox account.
I do not recommend downloading binary versions of cryptography libraries provided by third parties. The only way to guarantee that you are getting a version of `pycrypto` that is compatible with your version of Python and has not been built with any backdoors is to build it from the source.
After you have installed Visual C++, just re-run the original command:
pip install -U steem
To find out what the various install options mean, run this command:
pip help install
The help for the `-U` option says
-U, --upgrade Upgrade all specified packages to the newest available
version. The handling of dependencies depends on the
upgrade-strategy used.
If you do not already have the `steem` library installed, you can run the command without the `-U` option.
Problem
I just ran the following command: ``` pip install -U steem ``` and the installation worked well until it failed to install `pycrypto`. Afterwards I did the ``` pip install cryptography ``` command because I thought it was the missing package. So my question is, how I can install `steem` without the pycrypto-error (or the pycrypto-package in addition) and how to uninstall the cryptography-Package which I don't need. (I'm using Windows 7 and Python 3) ``` Requirement already up-to-date: python-dateutil in c:\users\***\appdata\lo cal\programs\python\python36\lib\site-packages (from dateparser->maya->steem) ... Installing collected packages: urllib3, idna, chardet, certifi, requests, pycryp to, funcy, w3lib, voluptuous, diff-match-patch, scrypt, prettytable, appdirs, la ngdetect, ruamel.yaml, humanize, tzlocal, regex, dateparser, pytzdata, pendulum, maya, ecdsa, pylibscrypt, ujson, toolz, steem Running setup.py install for pycrypto ... error Complete output from command c:\users\***\appdata\local\programs\pytho n\python36\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\ ***~1\\AppData\\Local\\Temp\\pip-build-k6flhu5k\\pycrypto\\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\***N~1\AppDat a\Local\Temp\pip-igpkll6u-record\install-record.txt --single-version-externally- managed --compile: running install running build running build_py ... building 'Crypto.Random.OSRNG.winrandom' 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\***\appdata\local\programs\python\python36\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\***N~1\\AppData\\Local\\ Temp\\pip-build-k6flhu5k\\pycrypto\\setup.py';f=getattr(tokenize, 'open', open)( __file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __fil e__, 'exec'))" install --record C:\Users\***N~1\AppData\Local\Temp\pip-igpkll6 u-record\install-record.txt --single-version-externally-managed --compile" faile d with error code 1 in C:\Users\***N~1\AppData\Local\Temp\pip-build- k6flhu5k\p ycrypto\ ```