Given a BytesIO buffer, generate img tag in html

Issue

Is it possible to generate a functional image tag in html from a BytesIO buffer? I'd like to do something along these lines:

import matplotlib
matplotlib.use('Agg') 
import pylab
import Image
import io

temp_data = {'x':[1,2,3],'y':[2,4,5]}
pylab.plot(temp_data['x'], temp_data['y'])

img_buffer = io.BytesIO()
pylab.savefig(img_buffer, format = 'png')
img_buffer.seek(0)

img_tag = "<img src='data:image/png;base64,'" + img_buffer.getvalue() + "</img>"

May be necessary to re-format the value of the buffer in some way, or to change the content of the 'src' data. Thank you.

Solution

Python2

Towards the end of the code above, do this

import base64
img_tag = "<img src='data:image/png;base64," + base64.b64encode(img_buffer.getvalue()) + "'/>"

Python3

For this to work in python3 you will need to decode the bytes variable generated from base64.b64encode using str.decode method into a string as follows

import base64
str_equivalent_image = base64.b64encode(img_buffer.getvalue()).decode()
img_tag = "<img src='data:image/png;base64," + str_equivalent_image + "'/>"

Answered By - Lamps1829