问在postgres中恢复sql文件时退出代码1

EN

conn = psycopg2.connect(host=t_host, port=t_port, dbname=t_dbname, user=t_name_user, password=t_password)
cursor = conn.cursor()

table_name='product'  
with open("table_dump.sql","w+") as f:
    create_query ="""CREATE TABLE public.decima
                    (
                        product_name character varying(200) COLLATE pg_catalog."default",
                        product_owner character varying(20) COLLATE pg_catalog."default",
                        trigger_operation character varying(4) COLLATE pg_catalog."default",
                        name character varying(250) COLLATE pg_catalog."default" NOT NULL,
                        CONSTRAINT product_pkey PRIMARY KEY (name)
                    )

                    TABLESPACE pg_default;"""
    f.write('%s \n' % (create_query))  
    #select table query
    cursor.execute("SELECT * FROM %s" % (table_name)) 
    column_names = []
    columns_descr = cursor.description
    for c in columns_descr:
        column_names.append(c[0])
    #insert query (insert data)
    insert_prefix = 'INSERT INTO %s (%s) VALUES ' % (table_name, ', '.join(column_names))
    rows = cursor.fetchall()
    for row in rows:
        row_data = []
        for rd in row:
            if rd is None:
                row_data.append('NULL')
            elif isinstance(rd, datetime.datetime):
                row_data.append("'%s'" % (rd.strftime('%Y-%m-%d %H:%M:%S') ))
            else:
                row_data.append(repr(rd))
        f.write('%s (%s);\n' % (insert_prefix, ', '.join(row_data)))