google_ascii.py

from PIL import Image
from urllib.request import urlopen
from urllib.parse import quote_plus
import json
import io
import re
from random import choice

def first(xs):
  for x in xs:
    return x

def google_image_search(query):
  urlquery = quote_plus(query)
  url = 'https://ajax.googleapis.com/ajax/services/search/images?v=1.0&rsz=8&q=%s' % urlquery
  req = urlopen(url)
  
  txt = req.read().decode('utf-8')
  res = json.loads(txt)
  
  img_urls = map(lambda x: x['unescapedUrl'], res['responseData']['results'])
  
  return list(img_urls)

def ascii_from_image(im, dims = (200, 54), chars = ['@', 'X', 'O', 'o', '+', ',', ' ']):
  im = im.convert('L')
  im.thumbnail(dims)
  
  chars.reverse()
  
  w, h = im.size
  im = im.resize((int(w * 2), h))
  
  chars = [(int(255 * (1+i) / len(chars)), c) for i, c in enumerate(chars)]
  
  w, h = im.size
  
  ascii = ''
  
  for y in range(h):
    for x in range(w):
      v = im.getpixel((x, y))
      char = first(filter(lambda w: w[0]>=v, chars))[1]
      ascii += char
    ascii += '\n'
  
  return ascii

def image_from_url(url):
  req = urlopen(url)
  bytes = req.read()
  return Image.open(io.BytesIO(bytes))

import sys

if len(sys.argv) != 2:
  exit(1)

print('Fetching results...')
urls = google_image_search(sys.argv[1])
url = choice(urls)

print('Image results = %d' % len(urls))
print('URL = %s' % url)

print('Downloading image...')
im = image_from_url(url)

ascii = ascii_from_image(im)

print(ascii)