安裝pymssql出現的錯誤：如下：
----------------------------------------
? Failed building wheel for pymssql? Running setup.py clean for pymssql
Failed to build pymssql
Installing collected packages: pymssql
? Running setup.py install for pymssql ... error
? ? Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-d11b_9n3/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 /tmp/pip-x8ogg8xp-record/install-record.txt --single-version-externally-managed --compile --user --prefix=:
? ? Traceback (most recent call last):
? ? ? File "<string>", line 1, in <module>
? ? ? File "/tmp/pip-build-d11b_9n3/pymssql/setup.py", line 88, in <module>
? ? ? ? from Cython.Distutils import build_ext as _build_ext
? ? ModuleNotFoundError: No module named 'Cython'
? ??
? ? ----------------------------------------
Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-d11b_9n3/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 /tmp/pip-x8ogg8xp-record/install-record.txt --single-version-externally-managed --compile --user --prefix=" failed with error code 1 in /tmp/pip-build-d11b_9n3/pymssql/
解決方法：
命令：export PYMSSQL_BUILD_WITH_BUNDLED_FREETDS=1
命令：pip3 install pymssql
)
