# -*- coding: utf-8 -*- import os, sqlite3 # 移除已有的文件,以免对测试造成干扰 db_file = os.path.join(os.path.dirname(__file__), 'test.db') if os.path.isfile(db_file): os.remove(db_file) # 初始数据: conn = sqlite3.connect(db_file) cursor = conn.cursor() cursor.execute('create table user(id varchar(20) primary key, name varchar(20), score int)') cursor.execute(r"insert into user values ('A-001', 'Adam', 95)") cursor.execute(r"insert into user values ('A-002', 'Bart', 62)") cursor.execute(r"insert into user values ('A-003', 'Lisa', 78)") cursor.close() conn.commit() conn.close() def get_score_in(low, high): ' 返回指定分数区间的名字,按分数从低到高排序 ' with sqlite3.connect(db_file) as conn: cursor = conn.cursor() cursor.execute('select * from user where score between ? and ? order by score', (low, high)) value = cursor.fetchall() value = list(map(lambda x: x[1], value)) return value # 测试: assert get_score_in(80, 95) == ['Adam'], get_score_in(80, 95) assert get_score_in(60, 80) == ['Bart', 'Lisa'], get_score_in(60, 80) assert get_score_in(60, 100) == ['Bart', 'Lisa', 'Adam'], get_score_in(60, 100) print('Pass')
value = list(map(lambda x: x[1], value))
是不是应该改成
value = list(map(lambda x: x[0], value))
哦不对, 应该是1,不用改,SORRY
为啥是1?能帮忙解释一下吗
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