mac系统python2.7环境安装pymssql的遇到的错误

用终端安装pymssql没有成功，

查询网络上的解决办法：
1. brew unlink freetds
2. brew install [email protected]
3. brew link –force [email protected]
4. pip install pymssql

安装依然报错：

  Building wheel for pymssql (PEP 517) ... error.......

DeprecationWarning: The pymssql project has been discontinued.  To install the last working released version, use a
  version specifier like "pymssql<3.0".  For details and alternatives see:
  https://github.com/pymssql/pymssql/issues/668
  ----------------------------------------
  ERROR: Failed building wheel for pymssql

报错信息说明安装的版本需要3.0以下的

所以此时安装的命令为：

pip install "pymssql<3.0"