old_contents: #!/usr/bin/python
  
  from numpy import rot90, array
  import sys
  import os
  import fileinput
  import serial
  import struct
  import time
  from flask import Flask, request, jsonify
  
  class PortTalker(object):
      def __init__(self, port):
          self.sp = serial.Serial(port, 57600)
          self.sp.setTimeout(0.02)
          self.buff = ''
  
      def send_picture(self, half, data):
          assert half in [0, 1]
          assert len(data) == 28
          l_bytes = [0x80, 0x83, half] + data + [0x8F]
          packed = struct.pack('32B', *l_bytes)
          self.sp.write(packed)
  
  def make_data_from_file(filename):
      return make_data(open(filename).readlines())
  
  def make_data(lines):
      # input is a 28 line x 14 column text file consisting of spaces and x
      # output is ( [ length 14 list of ints ], [ same ] )
      
      d = ([], [])
      count = 0
      for line in lines:
          count += 1
          if count > 28: 
              break
          line = line.replace('.', '0')
          line = line.replace('x', '1')
          bottom = line[0:7]
          top = line[7:14]
              
          d[0].append(int(top,2))
          d[1].append(int(bottom,2))
  
      return d
  
  def display_write(lines):
      talker = PortTalker('/dev/ttyUSB0')
      d = make_data(lines)
      talker.send_picture(0, d[0])
      talker.send_picture(1, d[1])
  
  def rotate(arr):
      line2d = [list(row) for row in arr]
      rotated = rot90(array(line2d))
      return [''.join(row) for row in rotated]
  
  app = Flask(__name__)
  
  @app.route('/clack/', methods=['POST'])
  def clack_set():
      """ send a new bitmap to the display """
  
      reqdata = request.form
      bitmap = reqdata['bitmap'].split('\n')
  
      # is it wide? rotate.
      if len(bitmap[0]) == 28:
          bitmap = rotate(bitmap)
  
      display_write(bitmap)
      return jsonify(status='success')
  
  
  if __name__ == '__main__':
      #main_tx(sys.argv[1])
      app.run(host='0.0.0.0', port=8080, debug=True)
      
  
new_contents: #!/usr/bin/python
  
  from numpy import rot90, array
  import sys
  import os
  import fileinput
  import serial
  import struct
  import time
  from flask import Flask, request, jsonify
  
  class PortTalker(object):
      def __init__(self, port):
          self.sp = serial.Serial(port, 57600)
          self.sp.setTimeout(0.02)
          self.buff = ''
  
      def send_picture(self, half, data):
          assert half in [0, 1]
          assert len(data) == 28
          l_bytes = [0x80, 0x83, half] + data + [0x8F]
          packed = struct.pack('32B', *l_bytes)
          self.sp.write(packed)
  
  def make_data_from_file(filename):
      return make_data(open(filename).readlines())
  
  def make_data(lines):
      # input is a 28 line x 14 column text file consisting of spaces and x
      # output is ( [ length 14 list of ints ], [ same ] )
      
      d = ([], [])
      count = 0
      for line in lines:
          count += 1
          if count > 28: 
              break
          line = line.replace('.', '0')
          line = line.replace('x', '1')
          bottom = line[0:7]
          top = line[7:14]
              
          d[0].append(int(top,2))
          d[1].append(int(bottom,2))
  
      return d
  
  def display_write(lines):
      talker = PortTalker('/dev/ttyUSB0')
      d = make_data(lines)
      talker.send_picture(0, d[0])
      talker.send_picture(1, d[1])
  
  def rotate(arr):
      line2d = [list(row) for row in arr]
      rotated = rot90(array(line2d))
      return [''.join(row) for row in rotated]
  
  app = Flask(__name__)
  
  @app.route('/clack/', methods=['POST'])
  def clack_set():
      """ send a new bitmap to the display """
  
      reqdata = request.form
      bitmap = reqdata['bitmap'].split('\n')
  
      # is it wide? rotate.
      if len(bitmap[0]) == 28:
          bitmap = rotate(bitmap)
  
      display_write(bitmap)
      return jsonify(status='success')
  
  
  if __name__ == '__main__':
      app.run(host='0.0.0.0', port=8080, debug=True)
      
  
subject: remove no longer relevant code