How to convert Image PIL into Base64 without saving

Question

I generate an image with Python, and I need to convert this Pil Image into a Base64, without saving this one into any folder...

I have some data, and I get RGB img with the line below:

img = Image.fromarray(data,'RGB')

What is the simple way to convert this PIL into base64 ?(I can't open a file image because I must not save the img) ?

Thank you for your help

With Node JS, I can get the correct base64 with these lines :

pythonShell= require("python-shell");

app.post('/index/gen/',urlencodedParser, function (req,res){ 
  pythonShell.run('minigen.py', function (err, results) {
  if (err) throw err; 
  var img = base64img.base64Sync('./images/miniature.jpg');
  res.send(img); }); 
}) 

But I have to save the file if I use NodeJS...

this is the code to generate the matrix from the image, you don't need to know what is in data ;)

image = Image.open("./carte/"+fichier)              
image = image.resize((400,400),Image.ANTIALIAS)     
w,h = image.size                                    
tab = numpy.array(image)                            
data = numpy.zeros((h, w, 3), dtype=numpy.uint8)

Answer 1

I found the solution. Hope this helps !

img = Image.fromarray(data, 'RGB')                  #Crée une image à partir de la matrice
buffer = BytesIO()
img.save(buffer,format="JPEG")                  #Enregistre l'image dans le buffer
myimage = buffer.getvalue()                     
print "data:image/jpeg;base64,"+base64.b64encode(myimage)