Alternative implementation of namescount.py using collections.defaultdict from the blog post "Why You Should Learn Python" https://iluxonchik.github.io/why-you-should-learn-python/

namescount.py

#!/usr/bin/env python3
import sys
from collections import defaultdict

def count_names():
    names = defaultdict(int)
    for name in sys.stdin.readlines():
        name = name.strip()
        names[name] += 1
            
    for name, count in names.items():
        sys.stdout.write("{0}\t{1}\n".format(name, count))

if __name__ == "__main__":
    count_names()

should have used "Counter" instead:

from collections import Counter
counts = Counter([i.strip() for i in sys.stdin.readlines()])

and that's it =)