Import Upstream version 2.7.18

Demo/scripts/README

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+This directory contains a collection of executable Python scripts.
+
+See also the Tools/scripts directory!
+
+beer.py			Print the classic 'bottles of beer' list
+eqfix.py		Fix .py files to use the correct equality test operator
+fact.py			Factorize numbers
+find-uname.py		Search for Unicode characters using regexps
+from.py			Summarize mailbox
+lpwatch.py		Watch BSD line printer queues
+makedir.py		Like mkdir -p
+markov.py		Markov chain simulation of words or characters
+mboxconvert.py		Convert MH or MMDF mailboxes to unix mailbox format
+morse.py		Produce morse code (audible or on AIFF file)
+newslist.py		List all newsgroups on a NNTP server as HTML pages
+pi.py			Print all digits of pi -- given enough time and memory
+pp.py			Emulate some Perl command line options
+primes.py		Print prime numbers
+queens.py		Dijkstra's solution to Wirth's "N Queens problem"
+script.py		Equivalent to BSD script(1) -- by Steen Lumholt
+unbirthday.py		Print unbirthday count
+update.py		Update a bunch of files according to a script.