python3.6版本的安裝查看上一篇文章
mysql或mariadb數據庫的安裝查看以前的文章，這里不再贅述
首先在mariadb數據庫中創建相應的庫和表：
MariaDB [(none)]> create database oracle default character set utf8 default collate utf8_general_ci;
Query OK, 1 row affected (0.00 sec)
MariaDB [oracle]> create table oracle_indexmonitor( index_name varchar(200) not null, ipaddress varchar(39) not null, tnsname varchar(100) not null, insert_time timestamp default current_timestamp, primary key(index_name) ) engine=InnoDB default charset=utf8;
Query OK, 0 rows affected (0.01 sec)
MariaDB [oracle]> desc oracle_indexmonitor;
+-------------+--------------+------+-----+-------------------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------+--------------+------+-----+-------------------+-------+
| index_name | varchar(200) | NO | PRI | NULL | |
| ipaddress | varchar(39) | NO | | NULL | |
| tnsname | varchar(100) | NO | | NULL | |
| insert_time | timestamp | NO | | CURRENT_TIMESTAMP | |
+-------------+--------------+------+-----+-------------------+-------+
4 rows in set (0.00 sec)
安裝需要用到的模塊pymysql：
[root@wadeson Python-3.6.1]# /usr/local/python36/bin/pip3 install PyMysql
Collecting PyMysql
Downloading PyMySQL-0.7.11-py2.py3-none-any.whl (78kB)
100% |¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€¨€| 81kB 87kB/s
Installing collected packages: PyMysql
Successfully installed PyMysql-0.7.11
檢測模塊是否安裝成功：
[root@wadeson Python-3.6.1]# python
Python 3.6.1 (default, Jul 13 2017, 15:41:38)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-18)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymysql
>>> exit()
然后編寫py腳本：
[root@wadeson Python-3.6.1]# cd /root/tools/scripts/
[root@wadeson scripts]# vim connectmysql.py
#!/usr/bin/python
#coding=utf8
import pymysql
#連接數據庫，host、賬號、密碼、庫
db = pymysql.connect('localhost','root','redhat','oracle')
#創建游標使用的cursor方法
cursor = db.cursor()
#使用execute方法執行sql語句
cursor.execute('select version()')
#使用fetchone方法獲取單條數據
data = cursor.fetchone()
print('Database version:%s' % data)
#關閉游標，並關閉數據庫
cursor.close()
db.close()
[root@wadeson scripts]# python connectmysql.py
Database version:5.5.55-MariaDB
note：
Python查詢Mysql使用 fetchone() 方法獲取單條數據, 使用fetchall() 方法獲取多條數據。
fetchone(): 該方法獲取下一個查詢結果集。結果集是一個對象
fetchall(): 接收全部的返回結果行.
rowcount: 這是一個只讀屬性，並返回執行execute()方法后影響的行數。
note：如果使用以上方法安裝報錯：ssl模塊不可用
那么可以使用編譯安裝：
wget https://pypi.python.org/packages/f5/d9/976c885396294bb1c4ca3d013fd2046496cde2efbb168e4f41dd12552dd9/PyMySQL-0.7.6.tar.gz#md5=d1353d9ad6e6668c3c463603b12cadb0
tar xf PyMySQL-0.7.6.tar.gz
cd PyMySQL-0.7.6
python setup.py build
python setup.py install
然后驗證是否安裝成功：
[root@oracle PyMySQL-0.7.6]# python
Python 3.6.1 (default, Jul 13 2017, 14:31:18)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymysql
>>>