windows WSL python 连接MySQL

安装环境 WSL

bash 复制代码

>wsl -l -v
  NAME            STATE           VERSION
* Ubuntu-18.04    Running         1

WSL2 无法与windows通信

bash 复制代码

>wsl -l -v
  NAME            STATE           VERSION
* Ubuntu-18.04    Running         2

解决方案1：设置防火墙，参考解决WSL与window通信问题

解决方案2：将wsl版本降级为1，等待20分钟左右，即可执行成功

bash 复制代码

>wsl --set-version Ubuntu-18.04 1

Python 配置MySQL

安装依赖

配置requirements.txt

bash 复制代码

sqlalchemy-utils==0.41.1
sqlalchemy==2.0.29
pymysql==1.0.2

安装依赖

bash 复制代码

pip install -r requirements.txt -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com

配置MySQL

python 复制代码

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, Session

def get_db_session(host: str, port: str, username: str, password: str, database_name: str) -> Session:
    engine = create_engine(f'mysql+pymysql://{username}:{password}@{host}:{port}/{database_name}')
    session_maker = sessionmaker(autocommit=False, autoflush=False, bind=engine)
    return session_maker()

def get_db_engine(host: str, port: str, username: str, password: str, database_name: str):
    engine = create_engine(f'mysql+pymysql://{username}:{password}@{host}:{port}/{database_name}')
    return engine

代码示例

python 复制代码

# 使用方式1
engine = get_db_engine(host, port, username, password, database_name)
Session = sessionmaker(bind=engine)
session1 = Session()

result1 = session1.execute(text("select * from table1"))

# 遍历结果集并打印每一行
for row in result1:
    print(row)
    
# 使用方式2
session2 =  get_db_session(host, port, username, password, database_name)

result2 = session2.execute(text("select * from table1"))

# 遍历结果集并打印每一行
for row in result2:
    print(row)