async def handle(sock, data, remote):
expression = str(data, encoding='UTF-8')
try:
result = process(expression)
print('Resolved', expression.rstrip(), 'to', result)
sock.sendto(bytes('= ' + str(result) + '\n', encoding='UTF-8'), remote)
except Exception as error:
result = str(error)
sock.sendto(bytes('ERROR: ' + str(error) + '\n', encoding='UTF-8'),
remote)
def handle(self):
self.request.send(b'Please input a RPN expression\n> ')
print('New connection, serving from {}'.format(
threading.current_thread().native_id))
while True:
expression = str(self.request.recv(1024), 'UTF-8').strip()
if expression == '': break
try:
result = process(expression)
print('Resolved', expression.rstrip(), 'to', result)
result = '= ' + str(result) + '\n> '
except Exception as error:
result = 'ERROR: ' + str(error) + '\n> '
self.request.send(bytes(result, 'UTF-8'))
self.request.send(b'See you later alligator\n')
import socket
from calculator import process
ADDRESS = ('', 8080)
with socket.create_server(ADDRESS) as server:
server.listen(1)
(connection, remote) = server.accept()
with connection:
connection.send(b'Please input a RPN expression\n> ')
while True:
data = connection.recv(1024)
if not data: break
expression = str(data, encoding='UTF-8')
if expression == '': break
try:
result = process(expression)
print('Resolved', expression.rstrip(), 'to', result)
connection.send(
bytes('= ' + str(result) + '\n> ', encoding='UTF-8'))
except Exception as error:
result = str(error)
connection.send(
bytes('ERROR: ' + str(error) + '\n> ', encoding='UTF-8'))
connection.send(b'See you later alligator\n')
def test_times_minus(self):
self.assertEqual(process('2 3 * 4 -'), 2)
def test_plus_minus(self):
self.assertEqual(process('3 4 - 5 +'), 4)
def test_only_operators(self):
with self.assertRaises(Exception):
process('+ - +')
def test_only_operands(self):
with self.assertRaises(Exception):
process('2 3 3')