Generates a PNG of every handwriting from Handwriting.io

generate_handwriting_samples.py

#!/usr/bin/env python
"""This script simply renders a message as a pdf and saves it to a file
(out.pdf) in the working directory
"""

import os
import sys

try:
  import requests
except ImportError:
  print "This script requires the requests library which can be downloaded at "\
    "http://docs.python-requests.org/en/latest/"
  sys.exit(1)

BASE_URL = "https://api.handwriting.io"
API_TOKEN = "<YOUR TOKEN>"
API_SECRET = "<YOUR SECRET>"
OUT_DIRECTORY = "out"

# this is the message we will turn into handwriting. It supports most
# white-space characters such as newline (\n) and tab (\t) as well as
# regular spaces
message = ("This is a writing sample written in %s."
    "\n\nThe next sentence is a pangram (it contains every letter used in "
    "english all in a single sentence!)\n\nAmazingly few discotheques "
    "provide jukeboxes.\n\n\t-Benjamin Franklin")

# get list of handwritings...
r = requests.get("%s%s" % (BASE_URL, "/handwritings"),
  auth=(API_TOKEN, API_SECRET))
r.raise_for_status()
handwritings = r.json()

# now loop over them, render a message in each one, and save it to a file named
# after the handwriting
for hw in handwritings:
  # this is the actual rendering request for a PNG.
  r = requests.get("%s%s" % (BASE_URL, "/render/png"),
      auth=(API_TOKEN, API_SECRET),
      params={
        'text': message % hw['title'],
        'handwriting_id': hw['id'], # find more ids at /handwritings
        'handwriting_size': 'auto',
        'height': '400px',
        'width': '600px'
      },
      stream=True # to prevent in-memory buffering of the image
    )
  r.raise_for_status()
  filename = os.path.join(OUT_DIRECTORY, '%s.png' % hw['title'])
  with open(filename, 'wb') as f:
    for chunk in r.iter_content(chunk_size=4096):
      f.write(chunk)
  print "results written to %s" % filename