问题
i am trying to install pymssql as
pip install pymssql
i have windows 7 and python 3.5 (from anaconda) but i get
Failed building wheel for pymssql
i believe its related to freetds and python-dev. how do i install these on windows?
Which packages would i need to install? this pip install worked just fine for python 2.7. If the pip does not work,is there any other way i can download and install pymssql?
回答1:
I just went through this small bit of hell and finally got things working, here is what I ended up doing:
First locate your Python directory (for me it was c:\Python35), then following the instructions found on the PyMSSQL documentation download the FreeTDS binaries and the precompiled OpenSSL binaries. Open SSL binaries are built in different versions of MSVC, for me I needed the MSVC 2015 32-bit binaries (because my copy of Python is the 32-bit build). FreeTDS is a little more cryptic, here the different vs20xx versions work with different generations of Python, in my case -vs2015 worked because I am using Python 3.5 which should work for you as well.
Next extract the dlls from the '/bin' directory in the OpenSSL release and the /lib directory in the FreeTDS release into a folder (in my case I used c:\Python35\FreeTDS).
Finally add this folder to your system PATH. You can now run import pymssql and not receive any errors. On windows you can also create a config file located at C:\freetds.conf which can provide some global settings to keep your python scripts clear of any connection strings.
来源：https://stackoverflow.com/questions/35303462/cannot-install-pymssql-on-windows