# coding=utf8
"""
问题:
往数据库批量插入10条数据的时候,在for循环里面使用excute插入,接口请求耗时>1s,严重影响效率;
遂考虑使用excutemany批量插入,接口请求耗时400ms
"""
# 逐条插入:cursor.excute()
# 批量插入:cursor.excutemany()
# 使用:executemany(templet, args)
# templet:sql模板字符串,例如:insert into table(id,name) values(%s,%s)
# args: 模板字符串中的参数,是一个list或者tuple, eg: [(1,"a"),(2,"b")] 或者 ((1,"a"),(2,"b"))
# 实例-节选
import time
draw_list = [...] # len(draw_list) = 10
sql = ''' insert into table(remix_uid, stage, tp, price, draw_result) values (%s,%s,%s,%s,%s)'''
cursor = db.cursor()
start_time = time.time()
for i in draw_list:
cursor.excute(sql, [args])
end_time = time.time() - start_time
print(end_time) # >1s
# ----修改为以下----
cursor = db.cursor()
start_time = time.time()
data = ((item[''], item[''], ...) for item in draw_list)
cursor.executemany(sql, data)
end_time = time.time() - start_time
print(end_time) # 400ms