一个非常非常唯美的视频

今天在逛油管的时候无意中发现了一个非常唯美的视频，特地下载下来分享给大家。

2018-04-10

让你的nginx目录浏览功能可以预览图片

0.前言

最近自己做了个图床，想要预览所有上传的图片于是开启了nginx的目录浏览功能，但是目录下面展示的是图片链接
，我想要看图片内容的话还需要一个个点进去看，很不方便。

我通过查文档了解到nginx的http_sub_module可以在response返回给客户端之前替换内容。所以我想到了利用这个模块添加一个js文件，这个js文件功能就是搜索页面的和上的链接，是图片后缀的话就动态生成img标签附加在后面。

但是写完后我发现还有个问题：有可能某个目录下图片文件有很多，上百个，如果全部自动加载的话会很耗时间和流量。于是我又在这个基础上添加了分页功能，并且利用details & summary标签实现了展开和折叠功能。

2018-01-12

使用Python整理我的ACM-nyoj的代码

这几天在整理电脑里的文件。发现了之前自己写的南阳OJ的刷题代码。当时还不知道有github这样的好东西，于是自己就把自己Accept之后的代码都保存成[题目].txt文件了。

现在发现这样挺不方便的，于是就写了个Python脚本，把题号和题目名作为文件名并且自动抓取南阳OJ上的题目描述、样例输入和样例输出等信息作为注释
放在代码的前面。

2017-12-17

用Python抓取wallls.com上的壁纸

如果你喜欢动漫风格的壁纸而自己又不想一张一张下载。可以用下面的脚本批量下载

# -*- coding: UTF-8 -*-

import requests
import re,sys,time
import random


failed_urls = []
image_urls = []

def record_data():
    global image_urls,failed_urls
    with open('H:/temp/list.txt','w') as f:
        #为了防止有重复的图片。用set集合去重
        ls = set(image_urls)
        print('DONE:',len(ls))
        f.write('\n'.join(ls))
        #可能会有访问失败的URL。但是一般不会有
    with open('H:/temp/failed_urls.txt','w') as f:
        ls = set(failed_urls)
        print('FAILED:',len(ls))
        f.write('\n'.join(ls))

<!--more-->
#封装一个请求方法，对失败的请求增加睡眠重试机制，超过三次失败的url放入failed_urls
def hr(url,retry=1,sleeptime=1):
    global failed_urls
    try:
        time.sleep(sleeptime)
        print('url:',url)
        return requests.get(url,timeout=3)
    except KeyboardInterrupt as e:
        raise e
    except:
        print('url:',url,'failed.retry=',retry)
        if retry > 3:
            print('url:',url,'failed more than 3 times.pass')
            failed_urls.append(url)
        else:
            #每失败一次增加5秒睡眠时间
            return hr(url,retry=retry+1,sleeptime=sleeptime+5)
    return None

#按下载顺序设置文件名
num = 0
def download_image(url):
    global num
    num+=1
    suffix = url[url.rindex('.'):]
    print('downloading:[',url,']-->',num)

    r = hr(url)
    if r is not None:
        with open('H:/temp/' + str(num) + suffix,'wb') as f:
            f.write(r.content)


def download():
    urls = []
    with open('H:/temp/list.txt','rb') as f:
        txt = f.read().decode('utf-8')
        urls = txt.split('\n')
    for x in urls:
        download_image(x.strip())



def main():
    global image_urls

    baseurl = 'http://wallls.com/tag/anime%2Bgirls'
    r = requests.get(baseurl)
    page_num = int(re.findall(r'of (\d+)',r.text)[0])
    print(page_num)
    try:
        #总共有303页，每页20张图片。共计6000+张壁纸。每个请求睡眠一秒。所以可能会下载很久(估计为2-3个小时)。
        for page in range(1,page_num+1): # //303
            list_url = baseurl + '/' + str(page)
            lr = hr(list_url)
            if lr is not None:
                #href="/wallpaper/188738/"
                detail_urls = re.findall(r'href="(/wallpaper/\d+)/',lr.text)
                for durl in ['http://wallls.com' + x for x in detail_urls]:
                    dr = hr(durl)
                    if dr is not None:
                        # download href="http://w4.wallls.com/uploads/original/201712/02/wallls.com_188729.png"
                        #每个壁纸的详情页面只有一个原图链接。所以只需要取第一个就可以了
                        imgurl = re.findall(r'http://\w+.wallls.com/uploads/original/\w+/\w+/\w+.\w+.(?:png|jpg)',dr.text)[0]
                        image_urls.append(imgurl)
    except:
        pass
    record_data()
    download()


if __name__ == '__main__':
    main()

2017-12-15

发送邮件-Python

用Python发送邮件

1.发送邮件工具类(mailutils.py)

# -*- coding: UTF-8 -*-

import smtplib,sys,configparser
from email.mime.text import MIMEText
from email.header import Header
from email.utils import formataddr
from email import utils


class MailUtils():

    def set_user(self,user,password,host,port,nick):
        self._user = user
        self._password = password
        self._host = host
        self._port = port
        self._nick = nick

    def print_config(self):
        print(self._user,self._password)

    def _send_mail(self,receiver,subject,content,fmt='plain'):
        '''
        fmt(format):plain/html
        return:true/false
        '''

        # 三个参数：第一个为文本内容，第二个 plain 设置文本格式，第三个 utf-8 设置编码
        message = MIMEText(content, fmt, 'utf-8')
        message['From'] = formataddr([self._nick,self._user])
        message['To'] =  formataddr(['To',receiver])
        message['Subject'] = Header(subject, 'utf-8')

        try:
            server = smtplib.SMTP()
            # server.set_debuglevel(1)
            server.connect(self._host,self._port)
            server.login(self._user,self._password)
            server.sendmail(self._user, [receiver], message.as_string())
            print("email send successful.")
        except smtplib.SMTPException as e:
            print("email send failed. >> ",e)
            return False
        finally:
            server.quit()
        return True
    
    # 发送html内容
    def send_html_mail(self,receiver,subject,content):
        self._send_mail(receiver,subject,content,fmt='html')

    # 发送普通文本
    def send_text_mail(self,receiver,subject,content):
        self._send_mail(receiver,subject,content,fmt='plain')

    # 发送给多人
    def send_to_multi(self,receivers,subject,content,fmt='plain'):
        message = MIMEText(content, fmt, 'utf-8')
        message['From'] = formataddr([self._nick,self._user])
        message['To'] =  formataddr(['你的昵称',u','.join(receivers)])
        message['Subject'] = Header(subject, 'utf-8')

        try:
            server = smtplib.SMTP()
            # server.set_debuglevel(1)
            server.connect(self._host,self._port)
            server.login(self._user,self._password)
            server.sendmail(self._user, receivers, message.as_string())
            print("email send successful.")
        except smtplib.SMTPException as e:
            print("email send failed. >> ",e)
            return False
        finally:
            server.quit()
        return True