from collections import defaultdict
from collections import counter

# namedtuple()
# UserDict
# UserList
# UserString
# OrderedDict
# counter
# ChainMap
# deque

# sequence types:
# tuple, list, string, range

# unpacking sequences
p = "ray", 0x30, "python"

# no:
name = p[0]
hex = p[1]
# yes:
name, hex = p
