========
CyMySQL
========
What's CyMySQL
--------------
This package contains a python MySQL client library.
It is a fork project from PyMySQL https://pymysql.readthedocs.io/en/latest/.
CyMySQL accerarates by Cython, and support not only python 2 but also python 3.
It still can work without Cython as a pure python driver.
Documentation on the MySQL client/server protocol can be found here:
http://dev.mysql.com/doc/internals/en/client-server-protocol.html
Requirements
-------------
- Python 2.7, 3.5+
- MySQL 5.5 or higher
Installation
--------------
Install cython (optional)
++++++++++++++++++++++++++++++
::
# pip install cython
Install cymysql
++++++++++++++++++++++++++++++
::
# pip install cymysql
MySQL 8.0 and insecure connection
+++++++++++++++++++++++++++++++++++
If you use caching_sha2_password authentication plugin (MySQL 8.0 default)
and connect with 'not ssl and not unix_socket' you shoud install pycryptodome
::
# pip install pycryptodome
Example
---------------
Python Database API Specification v2.0
+++++++++++++++++++++++++++++++++++++++++
https://peps.python.org/pep-0249/
::
import cymysql
conn = cymysql.connect(host='127.0.0.1', user='root', passwd='', db='database_name')
cur = conn.cursor()
cur.execute('select foo, bar from baz')
for r in cur.fetchall():
print(r[0], r[1])
asyncio
++++++++++++++++++++++++++++++++++++++
In Python3, you can use asyncio to write the following.
This API is experimental.
If there are any mistakes, please correct them in the pull request and send.
Use connect
::
import asyncio
import cymysql
async def conn_example():
conn = await cymysql.aio.connect(
host="127.0.0.1",
user="root",
passwd="",
db="database_name",
)
cur = conn.cursor()
await cur.execute("SELECT 42")
print(await cur.fetchall())
asyncio.run(conn_example())
Use pool
::
import asyncio
import cymysql
async def pool_example(loop):
pool = await cymysql.aio.create_pool(
host="127.0.0.1",
user="root",
passwd="",
db="database_name",
loop=loop,
)
async with pool.acquire() as conn:
async with conn.cursor() as cur:
await cur.execute("SELECT 42")
print(await cur.fetchall())
pool.close()
await pool.wait_closed()
loop = asyncio.get_event_loop()
loop.run_until_complete(pool_example(loop))
loop.close()
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