<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[firstday_willow的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/firstday_willow</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; firstday_willow]]></copyright><item><title><![CDATA[小程序云开发单次获取大于100条数据]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/108185970</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/108185970</guid><author>firstday_willow</author><pubDate>Sun, 23 Aug 2020 17:40:05 +0800</pubDate><description><![CDATA[小程序云开发的数据调用是有限制的，小程序端每次最多只能调用20条，调用云函数也只能获取100条，在很多情况下就不方便。
解决这个问题的话首先说原理：
1、获取总数，获取所想要调用数据的总数，count。
2、分段调用对总数进行划分，每次调用100（或者20，都可以）条。
3、拼接，将几次获取的数据拼接在一起。
这里借助云函数解决问题，如果想在小程序端写的话原理是一样的，写三个事件就好了。
放代码：
// 云函数入口文件
const cloud = require('wx-server-sdk')
cloud]]></description><category></category></item><item><title><![CDATA[windows部署django，按照网上教程后剩余问题]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/108054150</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/108054150</guid><author>firstday_willow</author><pubDate>Mon, 17 Aug 2020 13:38:09 +0800</pubDate><description><![CDATA[1、将应用程序池中对应应用程序，标识改为：localsystem

]]></description><category></category></item><item><title><![CDATA[pyqt5安装pycharm配置]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/107632052</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/107632052</guid><author>firstday_willow</author><pubDate>Tue, 28 Jul 2020 11:28:16 +0800</pubDate><description><![CDATA[1、安装
pip install PyQt5
pip install pyqt5-tools

2、配置环境变量【找到电脑中PyQt5的plugins文件夹】
QT_QPA_PLATFORM_PLUGIN_PATH
E:\pysc\venv\Lib\site-packages\PyQt5\Qt\plugins

3、安装依赖【如果执行完上两部提示缺失dll才执行】
下载安装 VC_redist.x64.exe
https://www.microsoft.com/en-us/download/confirma]]></description><category></category></item><item><title><![CDATA[Python数据处理pandas常用方法]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/107489397</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/107489397</guid><author>firstday_willow</author><pubDate>Tue, 21 Jul 2020 15:11:50 +0800</pubDate><description><![CDATA[1、【时间序列化】【periodindex】
2、【变更列名】【rename】
df.rename(columns={'原列名'：'新列名'}, inplace=True)

3、【对某列执行特定函数】【agg】
df.groupby(['货主']).英文列名.agg(['sum','mean','max','min'])      


...]]></description><category></category></item><item><title><![CDATA[从国内镜像源下载Python库]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/106499868</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/106499868</guid><author>firstday_willow</author><pubDate>Tue, 02 Jun 2020 17:00:15 +0800</pubDate><description><![CDATA[国内源：
新版ubuntu要求使用https源，要注意。
清华：https://pypi.tuna.tsinghua.edu.cn/simple
阿里云：http://mirrors.aliyun.com/pypi/simple/
中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/
华中理工大学：http://pypi.hustunique.com/
山东理工大学：http://pypi.sdutlinux.org/
豆瓣：http://pypi.douban.c]]></description><category></category></item><item><title><![CDATA[微信公众号发红包功能，现金红包、裂变红包接口]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/105575896</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/105575896</guid><author>firstday_willow</author><pubDate>Fri, 17 Apr 2020 12:48:31 +0800</pubDate><description><![CDATA[#=以下为红包操作===========
class View_Wechatpy_Redpack(View):
def get(self,request):
# 向个人用户发红包example
#redpack
client=WeChatPay(appid=AppID,
api_key= WX_MCH_KEY,
mch_id=WX_MCH_ID,
mch_cert=wx_cert_path,
mc...]]></description><category></category></item><item><title><![CDATA[windows server 2008 服务器下安装CV2提示错误 DLL load failed:]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/105542021</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/105542021</guid><author>firstday_willow</author><pubDate>Wed, 15 Apr 2020 18:46:15 +0800</pubDate><description><![CDATA[打开或关闭Windows功能（控制面板-程序和功能-）
跳过角色屏幕，直接进入功能屏幕
在“用户界面和基础结构”下选择“桌面体验”

]]></description><category></category></item><item><title><![CDATA[Django 数据库以字典形式进行新增一行数据]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/105249943</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/105249943</guid><author>firstday_willow</author><pubDate>Wed, 01 Apr 2020 16:55:28 +0800</pubDate><description><![CDATA[Django 数据库以字典形式进行新增一行数据
解决每次添加数据库字段数量不一致，及数据库字段名使用变量问题
datadict={'ToUserName':msg.target,'FromUserName':msg.source,'CreateTime':msg.create_time,'MsgType':msg.type}

msginfo=T_MP_WXMSG.objects.create(*...]]></description><category></category></item><item><title><![CDATA[while或者for循环之后else子句的用法]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/104928521</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/104928521</guid><author>firstday_willow</author><pubDate>Tue, 17 Mar 2020 18:55:10 +0800</pubDate><description><![CDATA[在Python中的while或者for循环之后还可以有else子句，作用是for循环中if条件一直不满足，则最后就执行else语句。
for i in range(5):
    if i &gt; 3:
        print(i)
else:
    print('hello world')

#输出

4 hello world

可以看到上面的for循环走完之后，会执行下面else语句...]]></description><category></category></item><item><title><![CDATA[微信小程序中用setData修改数组或对象]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/104801894</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/104801894</guid><author>firstday_willow</author><pubDate>Wed, 11 Mar 2020 17:59:36 +0800</pubDate><description><![CDATA[解决方案
先用一个字符串变量表示var key = 'keys.user_no'；
再将setData中该字符串变量用[ ]括起来。[key]
代码示例
一：data数据【对象】
  data: {
    keys:{
      user_no: 1,
      password: 2
    }
  },

设置操作
  bindKeyInputuserno: function (a) {...]]></description><category></category></item><item><title><![CDATA[报错'dict' object has no attribute 'iteritems'解决方案]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/104467647</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/104467647</guid><author>firstday_willow</author><pubDate>Sun, 23 Feb 2020 21:17:41 +0800</pubDate><description><![CDATA[报错内容：提示没有iteritems属性
AttributeError: 'dict' object has no attribute 'iteritems'

翻译过来是：
属性错误：“dict”对象没有属性“iteritems”
原因在于：python3中已经没有 “iteritems” 这个属性了，现在属性是：“ items ” 。
当然，如果你使用的是以前的Python版本，不会出现这个错...]]></description><category></category></item><item><title><![CDATA[京东实现自动账号密码登录；自动将购物车选中商品下单购买。京东在线抢购]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/104427279</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/104427279</guid><author>firstday_willow</author><pubDate>Fri, 21 Feb 2020 14:24:34 +0800</pubDate><description><![CDATA[=京东实现自动账号密码登录；自动将购物车选中商品下单购买。京东在线抢购
#!/usr/bin/env python
# -*- coding:utf-8 -*-

from selenium import webdriver
import datetime
import time

driver = webdriver.Firefox()

def login(username, password...]]></description><category></category></item><item><title><![CDATA[Python 常用基础]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/104083768</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/104083768</guid><author>firstday_willow</author><pubDate>Sat, 25 Jan 2020 16:38:30 +0800</pubDate><description><![CDATA[1、【安装依赖文件】
依赖文件生成
pip freeze &gt; requirements.txt

依赖文件安装
pip install -r requirements.txt

2、【虚拟环境】
创建目录mkdir newproj
进入目录cd newproj
创建虚拟机virtualenv venv
激活启用虚拟机venv\scripts\activate
虚拟机下关闭deactivate...]]></description><category></category></item><item><title><![CDATA[部署IIS网站HTTPS访问]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/104083684</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/104083684</guid><author>firstday_willow</author><pubDate>Sat, 25 Jan 2020 16:19:14 +0800</pubDate><description><![CDATA[1、登录阿里云申请SSL整数（个人免费版支持一个域名）
2、 证书导入
　　• 开始 -〉运行 -〉MMC；
• 启动控制台程序，选择菜单“文件"中的"添加/删除管理单元”-&gt; “添加”，从“可用的独立管理单元”列表中选择“证书”-&gt; 选择“计算机帐户”；
• 在控制台的左侧显示证书树形列表，选择“个人”-&gt;“证书”，右键单击，选择“所有任务"-〉"导入”, 根据"证书导入向导”...]]></description><category></category></item><item><title><![CDATA[django数据迁移1050错误:django.db.utils.InternalError: (1050, “Table ‘xxx’ already exists”)]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/103891235</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/103891235</guid><author>firstday_willow</author><pubDate>Wed, 08 Jan 2020 14:48:03 +0800</pubDate><description><![CDATA[django数据迁移1050错误:django.db.utils.InternalError: (1050, “Table ‘xxx’ already exists”)
错误原因是数据表已经被迁移过了，数据库中存在该表
声明数据表应建立过了
python manage.py migrate --fake

如果只是某个应用中表存在可载命令中加入应用名
python manage.py migrat...]]></description><category></category></item><item><title><![CDATA[django框架搭建，个人实际使用完整搭建过程。]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/103891077</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/103891077</guid><author>firstday_willow</author><pubDate>Wed, 08 Jan 2020 14:41:06 +0800</pubDate><description><![CDATA[1、新建文件夹例如{wanhuagongju}
2、退出原虚拟机【deactivate】
3、创建新虚拟机【Virtualenv 虚拟机名称】
4、进入新虚拟机【虚拟机名称\scripts\activate】
5、安装必要安装包
【pip install Django==1.8.2】
【pip install PyMySQL==0.9.3】
【pip install requests==2.22....]]></description><category></category></item><item><title><![CDATA[Django中使用scrapy爬虫并存入数据库]]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/103890860</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/103890860</guid><author>firstday_willow</author><pubDate>Wed, 08 Jan 2020 14:36:37 +0800</pubDate><description><![CDATA[创建django项目，并编写models.py，并进行数据迁移
生成迁移文件

python manage.py makemigrations

数据迁移
python manage.py migrate


配置Django嵌入
安装包

pip install scrapy-djangoitem

Django项目根目录下创建Scrapy项目（这是scrapy-djangoitem所需要的配...]]></description><category></category></item><item><title><![CDATA[python3.7下django连oracleAttributeError: 'cx_Oracle.Cursor' object has no attribute 'numbersAsStrings']]></title><link>https://blog.youkuaiyun.com/firstday_willow/article/details/103711702</link><guid>https://blog.youkuaiyun.com/firstday_willow/article/details/103711702</guid><author>firstday_willow</author><pubDate>Thu, 26 Dec 2019 11:12:56 +0800</pubDate><description><![CDATA[python版本3.7
连接oracle11g，报错
AttributeError: ‘cx_Oracle.Cursor’ object has no attribute ‘numbersAsStrings’
网上找解决方案，找到后不是让降级就是让修改包内容，但是修改内容是个图片打不开。所以最后实际解决办法是找到报错的位置，然后注释掉加粗这一行。
def init(self, connection...]]></description><category></category></item></channel></rss>