pymysqlclient 提示Microsoft Visual C++ 14.0 is required问题

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C:\Users\zhengk>pip install mysqlclient
Collecting mysqlclient
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x03B1C050>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed',)': /simple/mysqlclient/
  Downloading https://files.pythonhosted.org/packages/ec/fd/83329b9d3e14f7344d1cb31f128e6dbba70c5975c9e57896815dbb1988ad/mysqlclient-1.3.13.tar.gz (90kB)
    100% |████████████████████████████████| 92kB 4.3kB/s
Building wheels for collected packages: mysqlclient
  Running setup.py bdist_wheel for mysqlclient ... error
  Complete output from command d:\software\python\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\zhengk\\AppData\\Local\\Temp\\pip-install-88poub55\\mysqlclient\\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\zhengk\AppData\Local\Temp\pip-wheel-njpn_rjk --python-tag cp36:
  d:\software\python\lib\distutils\dist.py:261: UserWarning: Unknown distribution option: 'long_description_content_type'
    warnings.warn(msg)
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win32-3.6
  copying _mysql_exceptions.py -> build\lib.win32-3.6
  creating build\lib.win32-3.6\MySQLdb
  copying MySQLdb\__init__.py -> build\lib.win32-3.6\MySQLdb
  copying MySQLdb\compat.py -> build\lib.win32-3.6\MySQLdb
  copying MySQLdb\connections.py -> build\lib.win32-3.6\MySQLdb
  copying MySQLdb\converters.py -> build\lib.win32-3.6\MySQLdb
  copying MySQLdb\cursors.py -> build\lib.win32-3.6\MySQLdb
  copying MySQLdb\release.py -> build\lib.win32-3.6\MySQLdb
  copying MySQLdb\times.py -> build\lib.win32-3.6\MySQLdb
  creating build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\__init__.py -> build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\CLIENT.py -> build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\CR.py -> build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\ER.py -> build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\FIELD_TYPE.py -> build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\FLAG.py -> build\lib.win32-3.6\MySQLdb\constants
  copying MySQLdb\constants\REFRESH.py -> build\lib.win32-3.6\MySQLdb\constants
  running build_ext
  building '_mysql' 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 mysqlclient
  Running setup.py clean for mysqlclient
Failed to build mysqlclient
Installing collected packages: mysqlclient
  Running setup.py install for mysqlclient ... error
    Complete output from command d:\software\python\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\zhengk\\AppData\\Local\\Temp\\pip-install-88poub55\\mysqlclient\\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\zhengk\AppData\Local\Temp\pip-record-l6ai19vs\install-record.txt --single-version-externally-managed --compile:
    d:\software\python\lib\distutils\dist.py:261: UserWarning: Unknown distribution option: 'long_description_content_type'
      warnings.warn(msg)
    running install
    running build
    running build_py
    creating build
    creating build\lib.win32-3.6
    copying _mysql_exceptions.py -> build\lib.win32-3.6
    creating build\lib.win32-3.6\MySQLdb
    copying MySQLdb\__init__.py -> build\lib.win32-3.6\MySQLdb
    copying MySQLdb\compat.py -> build\lib.win32-3.6\MySQLdb
    copying MySQLdb\connections.py -> build\lib.win32-3.6\MySQLdb
    copying MySQLdb\converters.py -> build\lib.win32-3.6\MySQLdb
    copying MySQLdb\cursors.py -> build\lib.win32-3.6\MySQLdb
    copying MySQLdb\release.py -> build\lib.win32-3.6\MySQLdb
    copying MySQLdb\times.py -> build\lib.win32-3.6\MySQLdb
    creating build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\__init__.py -> build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\CLIENT.py -> build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\CR.py -> build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\ER.py -> build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\FIELD_TYPE.py -> build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\FLAG.py -> build\lib.win32-3.6\MySQLdb\constants
    copying MySQLdb\constants\REFRESH.py -> build\lib.win32-3.6\MySQLdb\constants
    running build_ext
    building '_mysql' 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 "d:\software\python\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\zhengk\\AppData\\Local\\Temp\\pip-install-88poub55\\mysqlclient\\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\zhengk\AppData\Local\Temp\pip-record-l6ai19vs\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\zhengk\AppData\Local\Temp\pip-install-88poub55\mysqlclient\

解决方案

这个时候直接到以下地址下载对应的库，然后离线pip install即可

https://www.lfd.uci.edu/~gohlke/pythonlibs/#pymssql

32位的下载win32,64位的下载win_amd64
cp36后面36代表python3.6
mysqlclient‑1.3.13‑cp36‑cp36m‑win32.whl
mysqlclient‑1.3.13‑cp36‑cp36m‑win_amd64.whl

cd到你下载的目录
pip install pymssql-2.1.3-cp36-cp36m-win32.whl