首先这是个人第一次接触MYsql，也是自行摸索。
首先我们下载 PyMySQL模块。
导入pymysql，我们可以看见很多
首先是导入模块连接数据库
首先我们查看了connect的原型。
def Connect(*args, **kwargs):
"""
Connect to the database; see connections.Connection.__init__() for
more information.
"""
from .connections import Connection
return Connection(*args, **kwargs)然后根据提示说的查看了connections模块下的Connection类的构造方法。
def __init__(self, host=None, user=None, password="",
database=None, port=0, unix_socket=None,
charset='', sql_mode=None,
read_default_file=None, conv=None, use_unicode=None,
client_flag=0, cursorclass=Cursor, init_command=None,
connect_timeout=10, ssl=None, read_default_group=None,
compress=None, named_pipe=None, no_delay=None,
autocommit=False, db=None, passwd=None, local_infile=False,
max_allowed_packet=16*1024*1024, defer_connect=False,
auth_plugin_map={}, read_timeout=None, write_timeout=None,
bind_address=None, binary_prefix=False):
arguments:
:param host: Host where the database server is located
:param user: Username to log in as
:param password: Password to use.
:param database: Database to use, None to not use a particular one.
:param port: MySQL port to use, default is usually OK. (default: 3306)
:param bind_address: When the client has multiple network interfaces, specify
the interface from which to connect to the host. Argument can be
a hostname or an IP address.
:param unix_socket: Optionally, you can use a unix socket rather than TCP/IP.
:param read_timeout: The timeout for reading from the connection in seconds (default: None - no timeout)
:param write_timeout: The timeout for writing to the connection in seconds (default: None - no timeout)
:param charset: Charset you want to use.
:param sql_mode: Default SQL_MODE to use.
:param read_default_file:
Specifies my.cnf file to read these parameters from under the [client] section.
:param conv:
Conversion dictionary to use instead of the default one.
This is used to provide custom marshalling and unmarshaling of types.
See converters.
:param use_unicode:
Whether or not to default to unicode strings.
This option defaults to true for Py3k.
:param client_flag: Custom flags to send to MySQL. Find potential values in constants.CLIENT.
:param cursorclass: Custom cursor class to use.
:param init_command: Initial SQL statement to run when connection is established.
:param connect_timeout: Timeout before throwing an exception when connecting.
(default: 10, min: 1, max: 31536000)
:param ssl:
A dict of arguments similar to mysql_ssl_set()'s parameters.
For now the capath and cipher arguments are not supported.
:param read_default_group: Group to read from in the configuration file.
:param compress: Not supported
:param named_pipe: Not supported
:param autocommit: Autocommit mode. None means use server default. (default: False)
:param local_infile: Boolean to enable the use of LOAD DATA LOCAL command. (default: False)
:param max_allowed_packet: Max size of packet sent to server in bytes. (default: 16MB)
Only used to limit size of "LOAD LOCAL INFILE" data packet smaller than default (16KB).
:param defer_connect: Don't explicitly connect on contruction - wait for connect call.
(default: False)
:param auth_plugin_map: A dict of plugin names to a class that processes that plugin.
The class will take the Connection object as the argument to the constructor.
The class needs an authenticate method taking an authentication packet as
an argument. For the dialog plugin, a prompt(echo, prompt) method can be used
(if no authenticate method) for returning a string from the user. (experimental)
:param db: Alias for database. (for compatibility to MySQLdb)
:param passwd: Alias for password. (for compatibility to MySQLdb)
:param binary_prefix: Add _binary prefix on bytes and bytearray. (default: False)
See `Connection <https://www.python.org/dev/peps/pep-0249/#connection-objects>`_ in the
specification.
然后我们看见了这是我们选择要填的参数，和对应的参数说明。
然后我们就进行了简单的连接测试。
try:
db = pymysql.connect(host="127.0.0.1",user="root",port=3306,password="123456")
db.close()
print("连接成功")
except:
print("连接失败")
连接成功
然后我们连接成功了。下面的是pymysql模块的一些方法。和变量。
BINARY Binary Connect Connection DATE DATETIME DBAPISet DataError DatabaseError Date DateFromTicks Error FIELD_TYPE IntegrityError InterfaceError InternalError MySQLError NULL NUMBER NotSupportedError OperationalError PY2 ProgrammingError ROWID STRING TIME TIMESTAMP Time TimeFromTicks Timestamp TimestampFromTicks VERSION Warning __all__ __builtins__ __cached__ __doc__ __file__ __loader__ __name__ __package__ __path__ __spec__ __version__ _compat apilevel charset connect connections constants converters cursors err escape_dict escape_sequence escape_string get_client_info install_as_MySQLdb optionfile paramstyle sys thread_safe threadsafety times util version_info