As usual, first we add some magic to display images inline in the Jupyter:

%matplotlib inline 

We're using Pandas to handle our data:

import pandas 

Please, visit the Kaggle site and download the dataset: https://www.kaggle.com/c/challenges-in-representation-learning-facial-expression-recognition-challenge

Load the dataset into the memory:

data = pandas.read_csv("fer2013/fer2013.csv") 

Dataset consists of gray scale face photos encoded as pixel intensities. 48 x 48 gives 2304 pixels for each. Every image is marked according to the emotion on the face.

data.head() 
emotion  pixels   Usage 
0  0  70 80 82 72 58 58 60 63 54 58 60 48 89 115 121...  Training 
1  0  151 150 147 155 148 133 111 140 170 174 182 15...  Training 
2  2  231 212 156 164 174 138 161 173 182 200 106 38...  Training 
3  4  24 32 36 30 32 23 19 20 30 41 21 22 32 34 21 1.....