这段代码更一般，但或许可以帮助您:
import sqlite3
new_db = sqlite3.connect(':memory:') # create a memory database
old_db = sqlite3.connect('test.db')
query = "".join(line for line in old_db.iterdump())
# Dump old database in the new one.
new_db.executescript(query)
EDIT :要获得指定的表，只需在for循环中进行更改，如下所示:
name_table = "test_table" # name of the table that you want to get.
for line in old_db.iterdump():
if name_table in line:
query = line
break