python3 安装pyodbc失败 pip3 install pyodbc

python3 安装pyodbc失败

报错1： 关键报错信息： fatal error: sql.h: No such file or directory 

[root@centfos python38]# pip3 install pyodbc
Collecting pyodbc
Using cached https://files.pythonhosted.org/packages/81/0d/bb08bb16c97765244791c73e49de9fd4c24bb3ef00313aed82e5640dee5d/pyodbc-4.0.30.tar.gz
Installing collected packages: pyodbc
Running setup.py install for pyodbc ... error
ERROR: Command errored out with exit status 1:
command: /usr/local/python38/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-rqyoyjuj/pyodbc/setup.py'"'"'; __file__='"'"'/tmp/pip-install-rqyoyjuj/pyodbc/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-record-_cvw7biv/install-record.txt --single-version-externally-managed --compile
cwd: /tmp/pip-install-rqyoyjuj/pyodbc/
Complete output (14 lines):
running install
running build
running build_ext
building 'pyodbc' extension
creating build
creating build/temp.linux-x86_64-3.8
creating build/temp.linux-x86_64-3.8/src
gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPYODBC_VERSION=4.0.30 -I/usr/local/python38/include/python3.8 -c src/buffer.cpp -o build/temp.linux-x86_64-3.8/src/buffer.o -Wno-write-strings
In file included from src/buffer.cpp:12:0:
src/pyodbc.h:56:17: fatal error: sql.h: No such file or directory
#include <sql.h>
^
compilation terminated.
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /usr/local/python38/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-rqyoyjuj/pyodbc/setup.py'"'"'; __file__='"'"'/tmp/pip-install-rqyoyjuj/pyodbc/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-record-_cvw7biv/install-record.txt --single-version-externally-managed --compile Check the logs for full command output.
WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

　　

解决方法：

[root@centos python38]# sudo yum install unixODBC-devel

　

然后再安装pyodbc：

[root@centos python38]# pip3 install pyodbc
Collecting pyodbc
Using cached https://files.pythonhosted.org/packages/81/0d/bb08bb16c97765244791c73e49de9fd4c24bb3ef00313aed82e5640dee5d/pyodbc-4.0.30.tar.gz
Installing collected packages: pyodbc
Running setup.py install for pyodbc ... done
Successfully installed pyodbc-4.0.30
WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

　　

报错2： 关键报错信息： ModuleNotFoundError: No module named '_ctypes'

解决方法：

  yum install libffi-devel 

然后从config开始重新编译安装。