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本来使用sublime text3也可以做python的IDE，但是我也想试试pyzo。 安装的过程很和平。没有任何报错 apt-get install pyzo 但是一启动就报错. pyzo Started our command server Segmentation fault 查看/var/log/messages就看到这么一行 Aug 13 17:48:18 kali kernel: [14934.509890] pyzo[4410]: segfault at 0 ip 00007f8688607561 sp 00007fff914d47b0 error 6 in QtCore.cpython-36m-x86_64-lin...

retext是编辑markdown文件的工具，最近升级了python3-PyQt5后，发现retext无法正常工作了 报错如下 apt-get install python3-pyqt5 apt install retext root@kali:~# retext Traceback (most recent call last): File "/usr/bin/retext", line 26, in <module> from ReText import datadirs, settings, globalSettings, app_version File "/usr/share/retext/ReText/...

kali_linux安装mpv 不知道卸载了什么，发现smplayer, 和mpv 都消失了. 决定从头开始把视频播放安装回来。 apt-get update apt-get install mpv 安装完打开mpv没有声音，为什么呢？ 我使用的是xfce4的desktop, 从Application->Multimedia->PulseAudio Volume Control点进去，怀疑是声音的某个组件丢失了。搞定的方式如下： apt-cache search pavucontrol apt-cache search pulseaudio apt-get install pavucontrol...

记录安装RabbitMQ 碰到的Dependency 的问题 执行apt-get install rabbitmq-server 报错。 apt-get install rabbitmq-server erlang17-xmerl : conflicts: erlang-xmerl but 1:20.3.8.1+dfsg-1 is to be installed 需要把这些erlang17 开头的conflict 先卸载，再继续进行安装。 dpkg -l |grep erlang apt-get purge erlang17-base erlang17-crypto erlang17-asn1 apt-ge...

今天才看到Machine Learning: Machine learning: Algorithms that can learn from observational data, and can make predictions based on it. Machine Learning分为unsupervised learning 和 supervised learning. 区别在: supervised learning: 有“参考答案”，而unsupervised learning则没有”参考答案” Train /Test : Need to ensure both sets are large enough to contain representat...

multivariate regression. (multiple regression) What if more than 1 variable influence the one you are interested in ? Example: predicting a price for a car based on its many attributes(body style, brand, mileage, etc.) 例如有多个因素都会影响车辆的价格，车型，品牌，公里数，车门数。 still use least squares. We just end up with coefficients for each factor. F...

sublime 3 支持中文是通过一个package 叫converttoutf8， 然后安装一个codec33的package. ​ ​1- 使用control＋～ :输入命令如下 也可以参考 https://packagecontrol.io/installation#st3 import urllib.request,os,hashlib; h = '6f4c264a24d933ce70df5dedcf1dcaee' + 'ebe013ee18cced0ef93d5f746d80ef60'; pf = 'Package Control.sublime-package'; ipp = sublime.installed_packages_path(); urllib.r...

polynomial regression Not all relationships are linear. Linear formula: y=mx+b This is a “first order” or “first degree” polynomial , as the power of x is 1. Second order polynomial: y=ax**2 + bx + c Third order polynomial: y = ax**3 + bx**2 + cx + d Higher orders polynomial produce more complex curves. beware overfitting: D...