Collecting pymssql Downloading http://mirrors.aliyun.com/pypi/packages/4c/c8/5ad36d8d3c304ab4f310c89d0593ab7b6229568dd8e9cde927311b2f0c00/pymssql-2.1.3.tar.gz (897kB) 100% |████████████████████████████████| 901kB 331kB/s Installing collected packages: pymssql Running setup.py install for pymssql ... error Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/rs/dc06sf0j27n3xjzsr0m5r2h40000gn/T/pip-build-A6n9LJ/pymssql/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /var/folders/rs/dc06sf0j27n3xjzsr0m5r2h40000gn/T/pip-5DYkVx-record/install-record.txt --single-version-externally-managed --compile: setup.py: platform.system() => 'Darwin' setup.py: platform.architecture() => ('64bit', '') setup.py: platform.libc_ver() => ('', '') setup.py: Detected Darwin/Mac OS X. You can install FreeTDS with Homebrew or MacPorts, or by downloading and compiling it yourself. Homebrew (http://brew.sh/) -------------------------- brew install freetds MacPorts (http://www.macports.org/) ----------------------------------- sudo port install freetds setup.py: Not using bundled FreeTDS setup.py: include_dirs = ['/usr/local/include'] setup.py: library_dirs = ['/usr/local/lib'] running install running build running build_ext building '_mssql' extension creating build creating build/temp.macosx-10.11-intel-2.7 cc -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch x86_64 -pipe -I/usr/local/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _mssql.c -o build/temp.macosx-10.11-intel-2.7/_mssql.o -DMSDBLIB _mssql.c:18814:15: error: use of undeclared identifier 'DBVERSION_80' __pyx_r = DBVERSION_80; ^ 1 error generated. error: command 'cc' failed with exit status 1 ----------------------------------------Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/rs/dc06sf0j27n3xjzsr0m5r2h40000gn/T/pip-build-A6n9LJ/pymssql/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /var/folders/rs/dc06sf0j27n3xjzsr0m5r2h40000gn/T/pip-5DYkVx-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/rs/dc06sf0j27n3xjzsr0m5r2h40000gn/T/pip-build-A6n9LJ/pymssql/````mac上安装pymssql会提示这样的错误.```__pyx_r = DBVERSION_80;```这是因为freetds版本比较高的问题.只需要先卸载freetds,然后在安装低版本```brew unlink freetdsbrew install homebrew/versions/freetds091```然后重新安装pymssql就好感谢stackoverflow`http://stackoverflow.com/questions/37771434/mac-pip-install-pymssql-error`复制代码