Untitled

import itertools
import collections
import io

f = io.StringIO('''What is Python language
Python is a widely used high level general purpose interpreted dynamic programming language
Its design philosophy emphasizes code readability and its syntax allows programmers to express concepts in fewer lines of code than possible in languages such as C or Java
Python supports multiple programming paradigms including object oriented imperative and functional programming or procedural styles
It features a dynamic type system and automatic memory management and has a large and comprehensive standard library
The best way we learn anything is by practice and exercise questions We have started this section for those beginner to intermediate who are familiar with Python
''')
iter_f = itertools.chain.from_iterable(line.split() for line in f)
cnt_f = collections.Counter(iter_f)
datal = sorted(k for k,v in cnt_f.items() if v==3)
print(*datal, sep='\n')