I easily built an operating environment for Python3 + Tornado on AWS EC2.


I was able to build a development environment locally by referring to the article "Getting started with Python! ~ ① Environment construction ~", so now it's time to start operation. Toward, I tried to create the operating environment of Python3 + Tornado on EC2 with the minimum procedure.

Estimated working time: 10 minutes

In production operation, we plan to use React on the Futonro end and Tornado on the back end.


The goal is to access EC2 from a browser and see "Hello, world".

Construction contents

  1. Amazon Linux
  2. Python 3.5.2
  3. Tornado 4.4

Python3 installation procedure

01. Install the required dependencies.

$ yum groupinstall "Development Tools"
$ yum install mlocate
$ yum install openssl-devel
$ yum install bzip2-devel
$ yum install zlib-devel bzip2 bzip2-devel readline-devel sqlite3 sqlite-devel openssl-devel

02. Install Pyenv.

$ git clone https://github.com/yyuu/pyenv.git ~/.pyenv

03. Pass the path of Pyenv.

$ vim ~/.bashrc
# Add Pyenv Path
export PYENV_ROOT="${HOME}/.pyenv"
if [ -d "${PYENV_ROOT}" ]; then
export PATH=${PYENV_ROOT}/bin:$PATH
eval "$(pyenv init -)"

Immediately reflect the settings.

$ source ~/.bashrc #.bashrc

04. Install Python.

Check the Python version.

$ pyenv install --list

Install Python3.

$ pyenv install 3.5.2

Switch from Python version 2.7.12 to 3.5.2.

$ python -V
Python 2.7.12
$ pyenv global 3.5.2
$ python -V
Python 3.5.2

Tornado installation procedure

01. Update pip to the latest version.

$ pip install --upgrade pip

02. Install Tornado.

$ pip install tornado

Hello world program preparation

This time, place the program directly under / home / ec2-user / helloworld /.


import tornado.ioloop
import tornado.web

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, world")

def make_app():
    return tornado.web.Application([
        (r"/", MainHandler),

if __name__ == "__main__":
    app = make_app()

Operation check

01. Execute the Hello world program.

# python helloworld.py

02. Access from a browser with the specified URL of Port.

e.g.) http://ec2-xxx-xxx-xxx-xxx.ap-northeast-1.compute.amazonaws.com:8888


At the end

It was easier than I expected to build an environment, so if you feel a threshold in building an environment, please refer to this article and take on the challenge. Originally it was PHPer, but since I started working on Python, I would like to summarize the researched contents in an article. In the future, I plan to create an article with the contents of the research to build a RESTful API server using Tornado.

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