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#!/usr/bin/env python3

# -*- coding: utf-8 -*-

from collections import namedtuple

Point = namedtuple('Point', ['x', 'y'])

p = Point(1, 2)

print('Point:', p.x, p.y)

from collections import deque

q = deque(['a', 'b', 'c'])

q.append('x')

q.appendleft('y')

print(q)

from collections import defaultdict

dd = defaultdict(lambda: 'N/A')

dd['key1'] = 'abc'

print('dd[\'key1\'] =', dd['key1'])

print('dd[\'key2\'] =', dd['key2'])

from collections import Counter

c = Counter()

for ch in 'programming':

c[ch] = c[ch] + 1

print(c)