[what] Collections Module In Python

.

This module implements specialized container datatypes providing alternatives to Python’s general purpose built-in containers,  dict , list , set , tuple .

namedtuple()	factory function for creating tuple subclasses with named fields
deque	list-like container with fast appends and pops on either end
ChainMap	dict-like class for creating a single view of multiple mappings
Counter	dict subclass for counting hashable objects
OrderedDict	dict subclass that remembers the order entries were added
defaultdict	dict subclass that calls a factory function to supply missing values
UserDict	wrapper around dictionary objects for easier dict subclassing
UserList	wrapper around list objects for easier list subclassing
UserString	wrapper around string objects for easier string subclassing

.

# Using Counter object from Collections Module
# to get word frequencies
# and common words
from collections import Counter

print ("\n====================\n")
textSource='''
Twinkle, twinkle, little star.
How I wonder what you are.
Up above the world so high.
Like a diamond in the sky.
'''
print("Source text:\n{}".format(str(textSource)))

print ("\n====================\n")
# replace comma with no char
# replace new line with no char
# replace dot with space char
# lower all char
# split by space char
# sort
listWord=sorted(textSource
.replace(",","")
.replace("\n","")
.replace("."," ")
.lower()
.split())

print("Preprocessed text tokens:\n{}"
.format(str(listWord)))

print ("\n====================\n")
print ("Word frequencies (using Counter object):")
# using Counter object
cntr=Counter(listWord)
print(cntr)

More examples:

https://www.geeksforgeeks.org/python-collections-module/