将PostgreSQL行强制转换为文本,但保持列分开

好吧,@Jon Clements提供的一个解决方案是:

 c = connection.cursor()
 c.execute("SELECT * FROM my_table")
 rows = (str(col) if col is not None else None for col in c.fetchall())
 for row in rows:
     print (row)

我的最终解决方案是:

c.execute("SELECT * FROM my_table LIMIT 1")
select_sql = "SELECT "
for row in c.description:
    column_name = row.name
    if type_ == 17: #binary data
        select_sql += " '<binary data>',"
    else:
        select_sql += " CASE WHEN %s::text='' THEN '''''' ELSE %s::text END," % (column_name, column_name)
select_sql = select_sql[:-1] + " FROM my_table" #remove trailing comma and add table name
c.execute(select_sql)

将空字符串转换为 '' None 价值观。我的代码实际上更广泛,因为它需要创建treeview列等等。希望这能帮助将来来这里的人。