#!/usr/bin/env python#-*- coding:utf-8 -*-import time#1 时间戳,获取从1970.1.1 00:00算起到目前的秒数t1 = time.time() #可用于计算时间print(t1)#----------------------------------------------------------#2 结构化时间(当地)默认将当前时间time.time()结构化t2 = time.localtime(time.time()) print(t2)#time.struct_time(tm_year=2018, tm_mon=10, tm_mday=2, tm_hour=15,# tm_min=50, tm_sec=36, tm_wday=1, tm_y...
python : 3.7.0 OS : Ubuntu 18.04.1 LTS IDE : PyCharm 2018.2.4 conda : 4.5.11 type setting : Markdowncode """ @Author : 行初心 @Date : 18-10-2 @Blog : www.cnblogs.com/xingchuxin @GitHub : github.com/GratefulHeartCoder """ import timedef main():my_time = time.localtime()print(my_time[0], "年")print(my_time[1], "月"...
python : 3.7.0 OS : Ubuntu 18.04.1 LTS IDE : PyCharm 2018.2.4 conda : 4.5.11 type setting : Markdowncode """ @Author : 行初心 @Date : 18-10-2 @Blog : www.cnblogs.com/xingchuxin @GitHub : github.com/GratefulHeartCoder """ import timedef main():print(time.localtime())year = time.localtime().tm_yearmonth = time.loca...
python : 3.7.0 OS : Ubuntu 18.04.1 LTS IDE : PyCharm 2018.2.4 conda : 4.5.11 type setting : Markdowncode """ @Author : 行初心 @Date : 18-10-2 @Blog : www.cnblogs.com/xingchuxin @GitHub : github.com/GratefulHeartCoder """ import time import osdef main():file_name = '1.txt'# 文件的最近访问时间file_times_access = ti...
Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (i.e., buy one and sell one share of the stock), design an algorithm to find the maximum profit. Note that you cannot sell a stock before you buy one. Example:Input: [7,1,5,3,6,4] Output: 5 Explanation: Buy on day 2 (price = 1) and sell on day 5 (pr...
笔记-python-standard library-8.1 data types-datetime 1. Datatimes 本章节内容为日期和时间处理类和方法。 1.1. datetime-basic date and time types source code: Lib/datetime.py datetime模块提供了日期和时间处理类,重点是各种格式化的输出。 时间包括两种,世界时和当地时间。 datetime和time对象可以选定时区。 datetime模块提供了下列常量: datetime.MINYEAR,datetime.MAXYEAR分别是1和9999。 相关模块ca...
Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may complete as many transactions as you like (i.e., buy one and sell one share of the stock multiple times). Note: You may not engage in multiple transactions at the same time (i.e., you must sell the stock before you buy again). Example 1:Input: [7,1,5,3,6,4...
1.datetime模块主要是5个类date #日期类 年月日 datetime.date(year,month,day)time #时间类 时分秒 datetime.time(hour,minute,second,microsecond,tzoninfo),返回18:29:30datetime #日期时间类 datetime(year, month, day[, hour[, minute[, second[, microsecond[,tzinfo]]]]])timedelta #两个时间点的间隔tzinfo #时区 2.使用到的方法datetime.date.isocalendar() #返回年月日的元祖(2018,9,29)datetime.date.isoweekday() #返...
【LeetCode】743. Network Delay Time 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/题目地址:https://leetcode.com/problems/network-delay-time/description/ 题目描述: There are N network nodes, labelled 1 to N. Given times, a list of travel times as directed edges times[i] = (u, v, w), where u is the source node, v is the targ...
我们在shell下运行Django的时候遇到这样的报错: C:\python\python3\lib\site-packages\django\db\backends\sqlite3\base.py:57: RuntimeWarning: SQLite received a naive datetime (2018-09-26 17:35:53.152861) while time zone support is active.RuntimeWarning)这个原因是我们在sitting.py中的设置有问题:我们只需把USE_TZ = False的true改为false就好了 修改前: 修改后:
import cx_Oracle conn = cx_Oracle.connect(数据库名字, 密码, **, encoding=UTF-8) cursor = conn.cursor() number = 2020-09-08 11:29:18 cursor.execute("update table set DATEcolumn = to_date({number} ,yyyy-mm-dd hh:mi:ss)".format(number=number)) conn.commit() cursor.close()conn.close()
我有一个api端点,该端点传递一个变量,该变量用于在数据库中进行调用.由于某种原因,它无法运行查询,但语法正确.我的代码如下.@app.route('/api/update/<lastqnid>') def check_new_entries(lastqnid):result = Trades.query.filter_by(id=lastqnid).first()new_entries = Trades.query.filter(Trades.time_recorded > result.time_recorded).all()id字段是:id = db.Column(db.String,default=lambda: str(uuid4().hex), primary_ke...
我有一个数字清单.该列表以两种方式存储:作为内存中的python对象,或作为redis列表(在同一服务器上重新设置). 我正在比较使用python的timeit检索这两个列表所花费的时间.这是我在python shell中所做的事情:import timeit import redis POOL = redis.ConnectionPool(host='127.0.0.1',port=6379,db=0) my_server = redis.Redis(connection_pool=POOL) print min(timeit.Timer('pylist1 = my_server.lrange("nums:5",0,-1)', setup=...
我正在建立一个Flask网站,其中涉及跟踪付款,我遇到了一个问题,我似乎无法按日期过滤我的一个数据库模型. 例如,如果这是我的表的样子:payment_to, amount, due_date (a DateTime object)company A, 3000, 7-20-2018 comapny B, 3000, 7-21-2018 company C, 3000, 8-20-2018我想过滤它,以便我获得7月20日之后的所有行,或者8月份的所有行等. 我可以想到一种原始的,强力的方式来过滤所有付款,然后迭代遍历列表按月/年过滤,但我宁愿远离...
我有一个名为Item的对象.它有2个字段:一个名为“created_on”的日期时间行和一个名为“days”的整数行. 我想查询很多天前“天”创建的所有对象. 以下是我认为应该如何做的事情:now = utcnow() session.query(Item).filter(Item.created_on + Interval(timedelta(days=Item.days)) <= now)但是我无法像这样创造一个timedelta.我收到这个错误:TypeError: unsupported type for timedelta minutes component: InstrumentedAttribut...