python - PeeWee PostgreSQL 数据库创建 : does not exist

Question

我正在尝试使用 PeeWee 创建 PostgreSQL 数据库。连接后出现以下错误:

File "peewee_test.py", line 44, in
psql_db.connect()
File "c:\python27\lib\site-packages\peewee.py", line 3602, in connect
self.initialize_connection(self._local.conn)
File "c:\python27\lib\site-packages\peewee.py", line 3514, in exit
reraise(new_type, new_type(*exc_args), traceback)
File "c:\python27\lib\site-packages\peewee.py", line 3600, in connect
**self.connect_kwargs)
File "c:\python27\lib\site-packages\playhouse\postgres_ext.py", line 385, in _connect
conn = super(PostgresqlExtDatabase, self)._connect(database, **kwargs)
File "c:\python27\lib\site-packages\peewee.py", line 3990, in _connect
conn = psycopg2.connect(database=database, **kwargs)
File "c:\python27\lib\site-packages\psycopg2__init__.py", line 164, in connect
conn = _connect(dsn, connection_factory=connection_factory, async=async)
peewee.OperationalError: FATAL: database "test" does not exist

知道我做错了什么吗？

from peewee import *
from playhouse.postgres_ext import PostgresqlExtDatabase

psql_db = PostgresqlExtDatabase(
    'test',  # Required by Peewee.
    user='xxxxx',  # Will be passed directly to psycopg2.
    password='xxxxx',  # Ditto.
    host='',  # Ditto.
    port='5432'
)

psql_db.connect() # error occurs here

psql_db.create_tables([Person, Pet])

Answer 1

Peewee 不会为您创建数据库，您需要首先使用 psql shell 连接到数据库，例如管理员用户访问权限 psql --host HOST --port 5432 --username YOUR_USER -W -d postgres 并运行 CREATE DATABASE test;

Postgres 还有一个辅助 createdb 可执行文件:

createdb my_db