#! /usr/bin/env python3

from collections import *

print ("Counter")
lst =  ['red', 'blue', 'red', 'green', 'blue', 'blue']
cnt = Counter(lst)
print (lst)
print (cnt)
print ("Total: " + str(cnt.total()))

print ("\nMore counters, like sets")
c = Counter(a=3, b=1)
d = Counter(a=1, b=2)
print ("c: ", c)
print ("d: ", d)
print ("c + d: ", c + d)    # add two counters together:  c[x] + d[x]
print ("c - d: ", c - d)    # subtract (keeping only positive counts)
print ("c & d: ", c & d)    # intersection:  min(c[x], d[x])
print ("c | d: ", c | d)    # union:  max(c[x], d[x])
print ("c == d: ", c == d)  # equality:  c[x] == d[x]
print ("c <= d: ", c <= d)  # inclusion:  c[x] <= d[x]
print ("c == c: ", c == c)  # equality:  c[x] == c[x]

print ("\nNamedTuple")
Point = namedtuple('Point', ['x', 'y'])
p = Point(11, y=22)     # instantiate with positional or keyword arguments
print (p)               # readable __repr__ with a name=value style
print (p[0] + p[1])     # indexable like the plain tuple (11, 22)
x, y = p                # unpack like a regular tuple
print ("x, y: " , x, y)
print ("p.x + p.y: ", p.x + p.y)# fields also accessible by name