事务检查与依赖解决错误: libmysqlclient.so.18 is needed by MySQL-python-1.2.3-5.fc17.i686 libmysqlclient.so.18(libmysqlclient_16) is needed by MySQL-python-1.2.3-5.fc17.i686 mysql-connector-java is needed by jython-2.2.1-9.fc17.noarch
Yum doesn't remove packages during the upgrade. Therefore if there are some packages that can't be updated for any reason and they are holding back the update of other packages, yum will fail to do the update altogether. This is an expected behavior.