当我尝试在 cmd 中使用 pip 安装 pyodbc 时，如何解决错误上升

Question

I am getting an error when I try to install pyodbc on a Windows computer using cmd .

C:\Users\Pcyber\AppData\Local\Programs\Python\Python310>python.exe -m pip install pyodbc
Collecting pyodbc
  Using cached pyodbc-4.0.32.tar.gz (280 kB)
  Preparing metadata (setup.py) ... done
Using legacy 'setup.py install' for pyodbc, since package 'wheel' is not installed.
Installing collected packages: pyodbc
    Running setup.py install for pyodbc ... error
    ERROR: Command errored out with exit status 1:
     command: 'C:\Users\Pcyber\AppData\Local\Programs\Python\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Pcyber\\AppData\\Local\\Temp\\pip-install-w2t0bax7\\pyodbc_0972efc851a7442b9e86edce259cfc8a\\setup.py'"'"'; __file__='"'"'C:\\Users\\Pcyber\\AppData\\Local\\Temp\\pip-install-w2t0bax7\\pyodbc_0972efc851a7442b9e86edce259cfc8a\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Pcyber\AppData\Local\Temp\pip-record-xbgtptdk\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\Pcyber\AppData\Local\Programs\Python\Python310\Include\pyodbc'
         cwd: C:\Users\Pcyber\AppData\Local\Temp\pip-install-w2t0bax7\pyodbc_0972efc851a7442b9e86edce259cfc8a\
    Complete output (5 lines):
    running install
    running build
    running build_ext
    building 'pyodbc' extension
    error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Users\Pcyber\AppData\Local\Programs\Python\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Pcyber\\AppData\\Local\\Temp\\pip-install-w2t0bax7\\pyodbc_0972efc851a7442b9e86edce259cfc8a\\setup.py'"'"'; __file__='"'"'C:\\Users\\Pcyber\\AppData\\Local\\Temp\\pip-install-w2t0bax7\\pyodbc_0972efc851a7442b9e86edce259cfc8a\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Pcyber\AppData\Local\Temp\pip-record-xbgtptdk\install-record.txt' --single-version-externally-managed --compile --install-headers 'C:\Users\Pcyber\AppData\Local\Programs\Python\Python310\Include\pyodbc' Check the logs for full command output.

Answer 1

According to that part of the error message:

extension error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/

It looks like you are missing a suitable C++ compiler on your platform. According to the documentation of pyodbc you require one:

Note, pyodbc contains C++ extensions so you will need a suitable C++ compiler on your computer to install pyodbc, for all operating systems.

See here: https://pypi.org/project/pyodbc/

I suggest using the one form Microsoft Build Tools as suggested in your error message.

Answer 2

pip is trying to compile pyodbc from source but you do not have any compiler installed on your computer. There usually are binary packages which do not need to be compiled but there is none for your python version (3.10).

You should either downgrade to an older version of python such as 3.9 or follow the instructions given by the error which is to install the Microsoft Visual C++ compiler.

Answer 3

I have uninstalled the python upgrade from python3.10 to python3.9.5 and now I can enjoy using pip without any challenges.