Lei Feng 的 Blog

For the things we have to learn before we can do them, we learn by doing them. --Aristotle

Install Python 3 Distributions on a Linux Server

06 Feb 2018 | Tutorial | Python

As a data scientist, I often need to run Python scripts on Linux servers. The vast majority of CentOS/RHEL-based Linux servers use Python 2.6.6, while most of my Python applications are written in Python 3. In additoin, on most of the servers, I don’t have the sudo priviledge, so it needs a little trick to install Python 3 on those servers. This post is a step-by-step instructions on installing Python 3.6 through both Anaconda and Python Gzipped source tarball file on a CentOS/RHEL-based Linux server. Read More...

Deploy a Flask Application on an Azure Virtual Machine

15 Nov 2017 | Azure | Python • Flask • Apache Web Server

Flask is a micro framework for Python and based on Werkzeug and Jinja2 template engine for developing web applications. With the Azure VPS that has been configured in last post, in this post I will go through steps to deploy a flask application on the VPS. Read More...

Install Apache Web Server on Azure Virtual Machine

14 Nov 2017 | Tutorial • Azure | Apache Web Server

Apache HTTP Server is the most used web server software in the world and public cloud services, such as Amazon Web Services and Microsoft Azure, make setting up a Virtual Private Server(VPS) hosting web applications a lot easier than traditional ways that use physical servers. Unlinke many other tutorials that focus on traditional web hosts and configurations for running PHP and/or .NET applications, this post presents steps of installing and configuring Apache HTTP Web Server on an Azure Ubuntu Virtual Machine to host Flask Web applications. Read More...

Install Apache Spark in a Standalone Mode on Windows

Learning Apache Spark Tutorial

27 Aug 2017 | Tutorial | Apache Spark

Apache Spark is a cluster comuting framework for large-scale data processing, which aims to run programs in parallel across many nodes in a cluster of computers or virtual machines. It comibnes a stack of libraries including SQL and DataFrames, MLlib, GraphX, and Spark Streaming. Spark can run in four modes: Read More...

How to Use pip behind a Proxy

15 Aug 2017 | Tutorial | Python • Proxy • pip

I often need to use the python package manager pip to install a python package on my office computer that is behind a proxy. Without specifying the proxy info, it always pop up Connection refusederrors. Following settings and commands can be used to make ‘pip install’ work smoothly. Read More...