## Simple Tutorial Python, Boto3, and AWS S3

I’ve horrible experience to find “good” tutorial about how to use Boto3 in Amazon Web Service (AWS). Boto3, not like Boto2, has poor quality documentation. So I create this simple tutorial as reminder to myself and I hope it will help someone out there.

## Boto3

The AWS SDK for Python. It simply to said, if you have a python apps and you want it to access AWS features, you need this.

## Installation & Setup

Installation is very clear in python documentation and for configuration you can check in Boto3 documentation just using pip:

after install boto3 you can use awscli to make it easier setup credentials, install it using pip too:

set your configuration using command below. You can get your access key and secret key in IAM console:

## Create A Simple App

Let’s create a simple app using Boto3. We will create a simple app to access stored data in AWS S3. This app will write and read a json file stored in S3.

First, you need to create a bucket in your S3. You can create bucket by visiting your S3 service and click Create Bucket button.

or using some code below:

If you confuse what is bucket and how it works, this one have nice explanation.

### 2. Write JSON File

Next part is how to write a file in S3. The code below will create a json file (if it doesn’t exist, or overwrite it otherwise) named hello.json and put it in your bucket.

If you want to put it on specific path, you can change the line

to

Run it, and if you check your bucket now you will find your file in there.

Last but not least, if you want to read your file, you can use get() function. The code below will read your hello.json file and show it on screen. File body/content will be read as string by default.

I think that’s all, a simple tutorial using boto3 to read-write file in Amazon Web Service S3. Hope it helps 🙂

## How Do I Learn Neural Network (and Deep Learning)

First, I am nobody in this topic, please don’t hesitate to give better suggestion. This is actually just a “documentation” about my experience when I work on my undergraduate thesis in 2015. Once again, please don’t hesitate to discuss and give better suggestion about this topic, or.. correct my English if I made some mistakes 🙂

Background

Okay, before I tell you my story, I’ll tell you about my background when I started to learn neural network. I wrote this section only have one intention, to make you easy measure what you need, nothing else.

1. I have familiarity with some of mathematical symbols, like how to read sigma symbol, derivative symbol and many others (but not every symbols).
2. I have familiarity with basic math operation like derivative function, algebra, matrix and vector operation (but only “the basic”).
3. I’ve never coded in python, but I’ve been using C++ around 2-3 years and I used to code  Matlab style programming language in some project before (and thanks, this knowledge is very helpful)
4. I studied the Introduction of Artificial Intelligence at the fourth semester in college, but I won’t said I did it well 🙁

After a month googling randomly, I started to make a list what should I learn, the order of the list below it’s just the best order in my opinion. In my experience I jumped many times over the topic because at that time, I didn’t know what I didn’t know 🙁

If you want to learn about Deep Learning, lets begin with: What is Machine Learning?

Then start to learn about Neural Network

Let’s do some math, Backpropagation?

I suggest you to fully-understand this algorithm in order to give some intuitions to help you in model tuning or error handling when you start implement the neural network

• Easy start : I watched again the neural network demistifyed, and slowly got the intuition how backpropagation work, I followed and tried the math step-by-step
• Watch the 4th week on Coursera Introduction to Machine Learning
• Try the example of how backpropagation works : https://mattmazur.com/2015/03/17/a-step-by-step-backpropagation-example/
• Read carefully the second chapter from http://neuralnetworksanddeeplearning.com/
• And if you start thinking they have different formula / calculation / interpretation, start to prove that you are wrong. I started to compare all the calculations to understand more

Python for machine learning?

So what is Deep Learning?

What is Convolutional Neural Network (I use CNN in my undergraduate thesis)?

Backpropagation in CNN?

I don’t know it is necessary or not, but I learned it. I think if you understand the basic of backpropagation it’s enough. But if you are curious how backpropgation through max pooling or convolution layer, it does not hurt to learn it.

And…great, It’s done, That’s all my references that I used when I did my undergraduate thesis, I hope it will be useful for someone :/ or at least for me in the future 🙂