postgresql-syntax.html
1、python3安装
windows离线安装python3.6.8环境：https://blog.csdn.net/qq262593421/article/details/111309116
Linux...105395101
2、MongoDB4安装
win10安装postgresql：https://blog.csdn.net/qq262593421/article/details/114318815
linux..."""
def __init__(self, host="127.0.0.1", user=None, password=None, database=None, port=5432, dsn...=user, password=password, database=database, port=str(port),
dsn...=dsn, connection_factory=connection_factory, cursor_factory=cursor_factory, **kwargs)
self.
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