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並前往https://serverfault.com/questions/1065809/psycopg2-operationalerror-could-not-connect-to-server-no-route-to-host-is-the

psycopg2.OperationalError: could not connect to server

... connection = Database.connect(**conn_params) File "/usr/local/lib/python3.8/site-packages/psycopg2/__init__.py", line 127, in connect ...

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