server.py

#!venv/bin/python
from flask import Flask, render_template, request, Response
import os
import time
import subprocess

app = Flask(__name__, template_folder='.', static_folder='.')


@app.route('/')
def root():
    time_in_secs = os.path.getmtime('pyth.py')
    time_in_python = time.gmtime(time_in_secs)
    formatted_time = time.strftime("%d %b %Y", time_in_python)
    return render_template('index.html',
                           formatted_time=formatted_time,
                           code=request.args.get('code', ''),
                           input=request.args.get('input', ''),
                           debug=int(request.args.get('debug', 0)),
                           test_suite=int(request.args.get('test_suite', 0)),
                           test_suite_input=request.args.get('test_suite_input', ''),
                           input_size=int(request.args.get('input_size', 1)))


def run_code(code_message, input_message, debug_on):
    resp = ''

    input_message += '\n'
    pyth_code = '\n'.join(code_message.split("\r\n"))
    pyth_process = \
        subprocess.Popen(['/usr/bin/env',
                          'python3',
                          'pyth.py',
                          '-csd' if debug_on else '-cs',
                          pyth_code],
                         stdin=subprocess.PIPE,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.STDOUT)

    output, errors = \
        pyth_process.communicate(input=bytearray(input_message, 'utf-8'))

    if code_message:
        resp += output.decode() + (errors if errors else '')

    return resp


@app.route('/submit', methods=['POST'])
def submit():
    code_message = request.form.get('code', '')
    input_message = request.form.get('input', '')
    debug_on = int(request.form.get('debug'), 0)

    return Response(run_code(code_message, input_message, debug_on))


@app.route('/submit_test_suite', methods=['POST'])
def submit_test_suite():
    code_message = request.form.get('code', '')
    input_size = int(request.form.get('input_size', '1'), 0)
    inputs = ["\n".join(i) for i in zip(*[iter(request.form.get('input', '').split("\n"))] * input_size)]
    debug_on = int(request.form.get('debug'), 0)

    return Response("\n".join([run_code(code_message, inputs[0], debug_on)] +
                              [run_code(code_message, i, False) for i in inputs[1:]]) if inputs else "")


@app.route('/<path>')
def other(path):
    return app.send_static_file(path)

if __name__ == '__main__':
    app.run(debug=True)