如何使fetch方法返回INTEGER列的int值而不是字符串Python sqlite？

Question

我想使用此代码从sqlite数据库列读取所有温度值,但输出显示[(u'29',), (u'29',), (u'29',)],我只是将数值存储在数据库中.我希望输出[29, 29, 29]

import sqlite3

conn = sqlite3.connect("growll.db")
cursor = conn.cursor()

print "\nHere's a listing of all the records in the table:\n"
cursor.execute("select lchar from GrowLLDados")

print cursor.fetchall() 

Answer 1

试试这个:

import sqlite3

conn = sqlite3.connect("growll.db")
cursor = conn.cursor()

print "\nHere's a listing of all the records in the table:\n"
cursor.execute("select lchar from GrowLLDados")    

print [int(record[0]) for record in cursor.fetchall()]