小小蒲公英-CSDN博客

原创 Manjaro 下安装MySQL

安装sudo pacman -S mysql配置#初始化sudo mysql_install_db --user=mysql --basedir=/usr --datadir=/var/lib/mysql#启动sudo systemctl start mariadb#设置密码mysql_secure_installation#设置开机启动sudo systemctl enable mysqld

2021-08-30 10:19:58 378

原创 anki插件【Enhance main window】配置

{ "book symbol": "{", "cap value": null, "color empty": "red", "color empty descendant": "green", "color zero": false, "columns": [ { "absolute": true, "color": "#be3421", "description": "

2021-08-20 09:51:13 1125 6

处理工具：python脚本：import osimport reimport mathimport shutilimport xlsxwriterimport pandas as pdsource_path = os.path.abspath(r'H:\ALM\model\rxengine-v0.2_0414\rxengine\RxEngine')target_path = os.path.abspath(r'I:\临时\RxEngine')try: os.rmdir(t

2020-07-28 17:26:00 971

原创 ModuleNotFoundError: No module named ‘pip‘

解决python -m ensurepippython -m pip install --upgrade pip

2020-07-17 19:09:33 134

原创 C++遍历STL容器

#include <boost/foreach.hpp>BOOST_FOREACH(double r, TestData) std::cout << r << std::endl;

2020-06-22 13:53:41 382

原创枚举的使用

定义enum Frequency { NoFrequency = -1, //!< null frequency Once = 0, //!< only once, e.g., a zero-coupon Annual = 1, //!< on...

2020-04-23 14:59:26 127

原创 core dumped（吐核）

原因：1.内存越界2.使用的非线程安全的函数3.全局数据未加锁保护4.非法指针5.堆栈溢出解决：需要检查访问的内存、资源strace 命令命令前加 strace，控制台打印的跟踪信息进行分析和定位问题。...

2020-04-21 08:26:47 730

原创 Could not find OpenSSL. Install an OpenSSL development package or configure CMake with -DCMAKE_US

2020-03-16 23:49:17 13085 5

原创 error while loading shared libraries: libQuantLib.so.0: cannot open shared object file: No such ...

安装完quantlib后，在测试quanlib是否能使用时，运行./CDS报错./CDS: error while loading shared libraries: libQuantLib.so.0: cannot open shared object file: No such file or directory原因可能动态加载器还没有意识到你已经添加了QuantLib解决#...

2020-03-14 13:50:34 445

原创 Linux下配置boost、quantlib、cmake

1.下载https://sourceforge.net/projects/boost/files/boost/、https://sourceforge.net/projects/quantlib/files/上下载boost、quantlib软件包2.安装boostsutar zxvf boost_1_72_0.tar.gzmv boost_1_72_0 /usr/local...

2020-03-14 12:15:07 556

原创 ...failed updating 66 targets... ...skipped 12 targets... ...updated 1092 targets......

安装boost时候，运行./b2报错…failed updating 66 targets……skipped 12 targets…解决1.查看报错原因./b2 -q2.我这是由于python版本的问题，于是乎，我下载安装了个anaconda就解决了，安装过程可参考https://blog.csdn.net/weixin_39777626/article/details/8...

2020-03-14 12:13:57 1773

原创 codeblocks下配置boost库

1.下载boost库源码https://www.boost.org/2.配置gcc编译环境a、将Mingw工具链目录添加到系统的环境变量PATH中（eg：G:\codeblocks\MinGW\bin）b、将mingw32-make.exe复制并重命名为make.exec、输入"gcc -v"查看gcc版本信息3.编译bjama、在 G:\Library\boost_1_72_0\...

2020-03-03 20:14:35 781

原创 version 'xxxx' requested but 'xxxx' not found and version '8.3.0' of default 'g++' does not match

原码在CodeBlocks环境下的编译boost库时bjam install --toolset=gcc--prefix="G:\Library\boost_1_72_0" --build-type=complete报错G:/Library/boost_1_72_0/tools/build/src/tools\gcc.jam:203: in gcc.init from module gc...

2020-03-03 15:04:15 431 2

原创 error: failed to init transaction (unable to lock database)

安装软件时候报错error: failed to init transaction (unable to lock database) error: could not lock database: File exists if you're sure a package manager is not already running, you can remove /var/li...

2020-01-20 10:33:45 3013 1

原创各种安装

yumsudo pacman -Syu yum

2020-01-19 10:35:14 244

原创 WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None))

安装boost时候报错Looking in indexes: https://pypi.douban.com/simpleWARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot co...

2019-12-12 14:10:44 8784 4

原创 Not enough memory to open this page

解决：使用jupyter notebook时经常会遇到这个问题，之前我一直以为是计算量过大内存不足而挂掉，后来才发现是print()输出太多，页面放不下。所以当循环次数很多时，不要大量使用print()...

2019-11-29 10:12:23 1450

原创远程使用jupyter

1.生成配置文件jupyter notebook --generate-config #配置文件地址#/home/hadoop/.jupyter/jupyter_notebook_config.py2.生成密码#打开jupyterfrom notebook.auth import passwdpasswd()#两次输入密码后生成密钥3.修改配置文件#打开配置文件gedi...

2019-11-28 15:19:44 435

原创 Linux服务器关闭后台运行的进程

1.先查看所有进程ps -ux2.根据进程号关闭程序kill -9 pid

2019-11-28 14:31:02 4478

原创 python的各种tips

1.查看某个库的所有函数import QuantLib as qldir(ql)2.查看库、函数的参考文档、用法help(Annual)

2019-11-26 17:57:41 150

原创如何卸载pip

python -m pip uninstall pip==9.0.1

2019-11-13 15:32:06 1711

原创 ImportError: Unable to import required dependencies

报错ImportError: Unable to import required dependencies:numpy: Something is wrong with the numpy installation. While importing we detected an older version of numpy in ['D:\\Analytical\\Python\\Anacon...

2019-11-08 11:13:18 13684

原创爬取商户编码——招行

import requestsfrom lxml import etreeimport pandas as pdfrom sqlalchemy import create_engineimport timeimport randomconnect=create_engine('mysql+pymysql://user:password@xx:xx/xx?charset=utf8',...

2019-10-03 14:57:27 505 1

原创好看的热力图seaborn.heatmap配色

据说cmap的参数有这么多，于是博主一个个试过了，大部分的配色都很魔性（反正我不敢拿出来画图），一轮下来我觉得有几个还是挺不错的，整理出来以供下次使用Accent, Accent_r, Blues, Blues_r, BrBG, BrBG_r, BuGn, BuGn_r, BuPu, BuPu_r, CMRmap, CMRmap_r, Dark2, Dark2_r, GnBu, GnBu_r, ...

2019-07-14 17:28:18 37426 4

原创直方图

Codeimport matplotlibimport pandas as pdimport numpy as npimport matplotlib.pyplot as plt%matplotlib inlinedata=pd.read_csv('I:\data\data2.csv')x1=data.data1x2=data.data2num_bins = 100fig...

2019-07-12 20:58:58 226

原创条形图

Codeimport matplotlib.pyplot as pltimport numpy as npimport pandas as pd%matplotlib inlinedata=pd.read_csv(r'I:\data\data1.csv',encoding='gbk')x=np.array([i for i in range(len(data))])width =...

2019-07-11 23:43:26 226

原创 As的颜色搭配

六色 #e12d2b #fe9259 #00112b #e12d2b #fe9259 #00112b #074049 #024ab2 #2bcef9 #e12d2b #fe9259 #00112b #0348...

2019-07-11 13:02:13 6038

原创热力图颜色搭配

#4394C2 #66A9D7 #96C6DD #18639E #1260A8 #82B8DA #125CA3 #83BCDA #549EC7 #3B8BBE #CCDEF2 #D0...

2019-07-10 23:24:21 11669 1

原创带城市标注的地图——R软件

par(mar=rep(0,4))dat = read.csv(text = " 城市,jd,wd 北京,116.4666667,39.9 上海,121.4833333,31.23333333 天津,117.1833333,39.15 重庆,106.5333333,29.53333333 哈尔滨 ,126.6833333,45.75 长春,...

2019-07-02 13:04:48 1808

原创 python正则表达式去除html标签

代码实现import pandas as pdimport reresult=pd.read_csv('egg_comment.csv')result_text=[]comp = re.compile('</?\w+[^>]*>')for i in result.text: result_text.append(comp.sub('', i))result...

2019-06-29 22:04:53 2896

原创 UnicodeEncodeError: 'gbk' codec can't encode character '\U0001f914' in posit

原码#保存爬取结果（微博评论）result.to_csv('egg_comment.csv',encoding='gbk')报错UnicodeEncodeError: 'gbk' codec can't encode character '\U0001f914' in posit原因网上很多内容都是采用utf8编码的，gbk无法编码字符’\U0001f914’，所以’utf8’格式...

2019-06-29 21:55:30 5764 2

原创股票数据分析

1.获取数据由于没有限制所以随机抓取20只股票import tushare as tsimport osimport matplotlib.pyplot as pltimport seaborn as sns%matplotlib inlineplt.rcParams['font.sans-serif'] = ['SimHei']plt.rcParams['axes.unicode...

2019-05-31 00:48:54 5530 1

原创查看目录下所包含的文件类型

定义import osdef gci(filepath): files = os.listdir(filepath) for fi in files: fi_d = os.path.join(filepath,fi) if os.path.isdir(fi_d): gci(fi_d) else: ...

2019-04-19 15:54:46 489 3

原创爬取邮政服务网点

import requestsfrom lxml import etreeimport pandas as pdheaders = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.90 Safari/537.36...

2019-04-18 13:12:29 939 1

原创 echarts3的使用——绘制雨量流量关系图

承接上文，在webpack项目的基础上，绘制echarts图表1.初始化 npm 环境并安装 echartsnpm initnpm install echarts --save2.构建脚本前，会遇到一些小问题需安装一些依赖等等（碰上了你就知道了，缺什么百度什么）npm install -D grunt-cache-bustnpm install -D fs-extranpm ins...

2019-04-18 09:35:06 3292 2

原创 Vue.js创建Webpack项目

npm install -D grunt-cache-bustnpm install -D fs-extranpm install uglify-js@^2.8.0npm install rollup-plugin-uglify --devnpm install --save-dev @babel/corenpm install --save-dev rollupnpm i roll...

2019-04-18 00:04:36 1115 1

原创 Echarts2的使用——绘制中国地图

Echarts官网尽管官网里已有基础教程，但刚入门时难免会遇到不少问题，比如说中文乱码、不会引用示例图等，为此在此打卡记录以下，希望也能帮广大新手绕过一些坑。如何引用Echarts示例图打开入门教程，复制图标效果上方一栏的代码粘贴到记事本里，并保存为 .html文件注意：文件名以 “ .html ” 为后缀，保存类型改为 “ 所有文件(* . *) ” ，编码改为 “ UTF...

2019-04-17 08:30:58 3375