cx_Oracle查询结果，默认返回元组数据，如果想返回字典形式数据，最简单的方式是修改Rowfactories方法。

cx_Oracle “rowfactories” are methods called for each row that is
retrieved from the database. The Cursor.rowfactory() method is called
with the tuple that would normally be returned from the database. The
method can convert the tuple to a different value and return it to the
application in place of the tuple.

cursor.execute("select * from locations where location_id = 1000")
columns = [col[0] for col in cursor.description]
cursor.rowfactory = lambda *args: dict(zip(columns, args))
data = cursor.fetchone()
print(data)

参考：​​https://cx-oracle.readthedocs.io/en/latest/user_guide/sql_execution.html?highlight=dict#fetch-data-types​​