python use mysql
python连接mysql中我遇到了这样的问题
Traceback (most recent call last):
File “<stdin>”, line 1, in <module>
File “build/bdist.linux-i686/egg/MySQLdb/__init__.py”, line 81, in Connect
File “build/bdist.linux-i686/egg/MySQLdb/connections.py”, line 188, in __init__
_mysql_exceptions.OperationalError: (2002, “Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2)”)
mysql启动是参数设定的比较多，我的mysql启动脚本：
/home/2hei/mysql/bin/mysqld –defaults-file=/home/2hei/mysql/etc/my.cnf –basedir=/home/2hei/mysql –datadir=/home/2hei/mysql/data –log-error=/home/2hei/mysql/data/2hei.net.err –pid-file=/home/2hei/mysql/data/mysqld.pid –socket=/tmp/mysql.sock –port=13306
#!/usr/bin/env python
# -*-coding:UTF-8-*
import MySQLdb
conn = MySQLdb.Connection(host=’localhost’,port=13306,user=’2hei’,passwd=’123456′,db=’pytest’)
cur = conn.cursor()
cur.execute(‘select * from test’)
row=cur.fetchall()
print row
一直提示我mysql.scok出错。看了MySQLdb的源码后发现可以设定的参数还有很多
————————————
class Connection(_mysql.connection):
“””MySQL Database Connection Object”””
default_cursor = cursors.Cursor
def __init__(self, *args, **kwargs):
“””
Create a connection to the database. It is strongly recommended
that you only use keyword parameters. Consult the MySQL C API
documentation for more information.
host
string, host to connect
user
string, user to connect as
passwd
string, password to use
db
string, database to use
port
integer, TCP/IP port to connect to
unix_socket
string, location of unix_socket to use
conv
conversion dictionary, see MySQLdb.converters
connect_timeout
number of seconds to wait before the connection attempt
fails.
compress
if set, compression is enabled
named_pipe
if set, a named pipe is used to connect (Windows only)
init_command
command which is run once the connection is created
read_default_file
file from which default client values are read
read_default_group
configuration group to use from the default file
cursorclass
class object, used to create cursors (keyword only)
use_unicode
If True, text-like columns are returned as unicode objects
using the connection’s character set. Otherwise, text-like
columns are returned as strings. columns are returned as
normal strings. Unicode objects will always be encoded to
the connection’s character set regardless of this setting.
charset
If supplied, the connection character set will be changed
to this character set (MySQL-4.1 and newer). This implies
use_unicode=True.
sql_mode
If supplied, the session SQL mode will be changed to this
setting (MySQL-4.1 and newer). For more details and legal
values, see the MySQL documentation.
client_flag
integer, flags to use or 0
(see MySQL docs or constants/CLIENTS.py)
ssl
dictionary or mapping, contains SSL connection parameters;
see the MySQL documentation for more details
(mysql_ssl_set()). If this is set, and the client does not
support SSL, NotSupportedError will be raised.
local_infile
integer, non-zero enables LOAD LOCAL INFILE; zero disables
————————–
于是修改源码为：
conn = MySQLdb.Connection(host=’localhost’,port=13306,user=’2hei’,passwd=’123456′,db=’pytest’,unix_socket=’/tmp/mysql.sock’)
这样执行后可以得到正确的结果：
$python link_mysql.py
((1L, ‘ronaldo’, 23L), (2L, ‘figo’, 30L))
问题得以解决！
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