背景

在安装python 的过程中遇到的一些报错.贴上解决办法

具体报错

报错1

[root@xunjian ~]# pip install mysql-pythonDEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at  pip 21.0 will remove support for this functionality.Collecting mysql-python  Using cached MySQL-python-1.2.5.zip (108 kB)Building wheels for collected packages: mysql-python  Building wheel for mysql-python (setup.py) ... error  ERROR: Command errored out with exit status 1:   command: /usr/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-N3rhLO/mysql-python/setup.py'"'"'; __file__='"'"'/tmp/pip-install-N3rhLO/mysql-python/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-VJKqE2       cwd: /tmp/pip-install-N3rhLO/mysql-python/  Complete output (30 lines):  running bdist_wheel  running build  running build_py  creating build  creating build/lib.linux-x86_64-2.7  copying _mysql_exceptions.py -> build/lib.linux-x86_64-2.7  creating build/lib.linux-x86_64-2.7/MySQLdb  copying MySQLdb/__init__.py -> build/lib.linux-x86_64-2.7/MySQLdb  copying MySQLdb/converters.py -> build/lib.linux-x86_64-2.7/MySQLdb  copying MySQLdb/connections.py -> build/lib.linux-x86_64-2.7/MySQLdb  copying MySQLdb/cursors.py -> build/lib.linux-x86_64-2.7/MySQLdb  copying MySQLdb/release.py -> build/lib.linux-x86_64-2.7/MySQLdb  copying MySQLdb/times.py -> build/lib.linux-x86_64-2.7/MySQLdb  creating build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/__init__.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/CR.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/ER.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/FLAG.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/REFRESH.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  copying MySQLdb/constants/CLIENT.py -> build/lib.linux-x86_64-2.7/MySQLdb/constants  running build_ext  building '_mysql' extension  creating build/temp.linux-x86_64-2.7  gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -Dversion_info=(1,2,5,'final',1) -D__version__=1.2.5 -I/data/app/mysql/include -I/usr/include/python2.7 -c _mysql.c -o build/temp.linux-x86_64-2.7/_mysql.o  _mysql.c:44:23: fatal error: my_config.h: No such file or directory   #include "my_config.h"                         ^  compilation terminated.  error: command 'gcc' failed with exit status 1  ----------------------------------------  ERROR: Failed building wheel for mysql-python  Running setup.py clean for mysql-pythonFailed to build mysql-pythonInstalling collected packages: mysql-python    Running setup.py install for mysql-python ... error

解决方法:

查看自己的/usr/bin 目录下的python对不对[root@xunjian lepus]# ll /usr/bin/pypydoc             python            python2           python2.7-config  python2-config    python.bak        python-config    我目录下边的这个python默认不是2.7的python的软连接.所以我把这个python改为了python2.7的mv python  python.bak[root@xunjian bin]# mv python2.7 python

再执行

root@xunjian data]# pip install mysql-pythonDEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at  pip 21.0 will remove support for this functionality.Collecting mysql-python  Using cached MySQL-python-1.2.5.zip (108 kB)Building wheels for collected packages: mysql-python  Building wheel for mysql-python (setup.py) ... done  Created wheel for mysql-python: filename=MySQL_python-1.2.5-cp27-cp27mu-linux_x86_64.whl size=84943 sha256=ebe4a01c2b575e60d61c5351d1fd416e1b4d778dcd0195761bd64119a45d20cc  Stored in directory: /root/.cache/pip/wheels/55/eb/3b/661bdcd5ca5a576f0331400468db9d5dcbda118fb6c85fd3eeSuccessfully built mysql-pythonInstalling collected packages: mysql-pythonSuccessfully installed mysql-python-1.2.5已解决

报错2:

bash: pip:command not find

在CentOS7中，python基础版本是2.7 但是默认是没有装pip的.所以我们需要手动装一下pip

curl -O  get-pip.py

问题解决

问题3:

ImportError: libmysqlclient.so.20: cannot open shared object file: No such file or directory

解决办法:

从自己的mysql程序目录下找出libmysqlclient.so.20 文件.然后软链接到/usr/lib64/libmysqlclient.so.20ln -s /opt/mysql/lib/libmysqlclient.so.20 /usr/lib64/libmysqlclient.so.20