Andreas van Cranenburgh andreasvc

Write a function char_freq() that takes a string and builds a frequency listing of the characters contained in it. Represent the frequency listing as a Python dictionary. Try it with something like char_freq("abbabcbdbabdbdbabababcbcbab").
Write a function char_freq_table() that take a file name as argument, builds a frequency listing of the characters contained in the file, and prints a sorted and nicely formatted character frequency table to the screen.
The third person singular verb form in English is distinguished by the suffix -s, which is added to the stem of the infinitive form: run -> runs. A simple set of rules can be given as follows:

a. If the verb ends in y, remove it and add ies b. If the verb ends in o, ch, s, sh, x or z, add es c. By default just add s

Python exercises

Define a function max() that takes two numbers as arguments and returns the largest of them. Use the if-then-else construct available in Python. (It is true that Python has the max() function built in, but writing it yourself is nevertheless a good exercise).
Define a function max_of_three() that takes three numbers as arguments and returns the largest of them.
Define a function that computes the length of a given list or string. (It is true that Python has the len() function built in, but writing it yourself is nevertheless a good exercise).
Write a function that takes a character (i.e. a string of length 1) and returns True if it is a vowel, False otherwise.

	DBNLti_id DBNLpers_id YearFirstPublished YearEditionPublished Edition Woman Born Died AuthorOrigin DBNLgeb_land_code DBNLgenre DBNLsubgenre Author Title Filename ti_id_set WPAuthor AuthorInCanon2002 TitleInCanon2002 InBasisbibliotheek2008 AuthorDBRDMatches AuthorNLWikipedia2019Matches DBNLSecRefsAuthor DBNLSecRefsTitle holding lending GNTpages
	kist001leve01 kist001 1800 1800 1ste druk 0 1758 1841 Woerden proza roman Willem Kist Het leven, gevoelens en zonderlinge reize van den landjonker Govert Hendrik Godefroi van Blankenheim tot den Stronk (2 delen) kist001leve01_01.xml kist001leve01 0 0 0 0 1 19 1 0 0 4
	wolf016gesc01 deke001 1802 1802 1ste druk 1 1741 1804 Amstelveen proza roman Aagje Deken Geschrift eener bejaarde vrouw wolf016gesc01_01.xml wolf016gesc01 Aagje Deken 1 0 0 1 21 131 6 0 0 0
	stre001char01 stre001 1804 1804 1ste druk 1 1760 1828 Amsterdam proza briefroman Naatje van Streek-Brinkman Charakters en lotgevallen van Adelson, Héloïse en Elius stre001char01_01.xml stre001char01 0 0 0 0 0 13 0 0

	# This is a comment
	FROM ubuntu:20.04
	MAINTAINER Andreas van Cranenburgh <[email protected]>
	RUN ln -fs /usr/share/zoneinfo/Europe/Amsterdam /etc/localtime
	ENV DEBIAN_FRONTEND=noninteractive
	RUN apt-get update && apt-get install -y \
	build-essential \
	curl \
	git \
	python3 \

	import random
	from timeit import timeit
	import re
	import re2

	re_ip = re.compile(br'\d+\.\d+\.\d+\.\d+')
	re2_ip = re2.compile(br'\d+\.\d+\.\d+\.\d+')

	lines = ['.'.join(str(random.randint(1, 255)) for _ in range(4)).encode('utf8')
	for _ in range(16000)]

	import datetime


	def addseconds(timestamp, seconds):
	"""Take timestamp as string and add seconds to it.

	>>> addseconds('00:01:45,667', 1)
	'00:01:46,667'
	>>> addseconds('00:01:45,667', 0.5)
	'00:01:46,167'

	"""Apply polyglot language detection to all .txt files under current directory
	(searched recursively), write report in tab-separated file detectedlangs.tsv.
	"""
	import os
	from glob import glob
	from polyglot.detect import Detector
	from polyglot.detect.base import UnknownLanguage


	def main():