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• MarkChonofskytoldmeaboutanewkeywordinPython3.
• RussellColemanhelpedmewithmygeometry.
• Nam Nguyen found a typo and pointed out that I used the Decorator pattern but didn’t men- tion it by name.
• StéphaneMorinsentinseveralcorrectionsandsuggestions.
• PaulStoopcorrectedatypoinuses_only.
• EricBronnerpointedoutaconfusioninthediscussionoftheorderofoperations.
• Alexandros Gezerlis set a new standard for the number and quality of suggestions he submit- ted. We are deeply grateful!
• GrayThomasknowshisrightfromhisleft.
• GiovanniEscobarSosasentalonglistofcorrectionsandsuggestions.
• DanielNeilsoncorrectedanerrorabouttheorderofoperations.
• WillMcGinnispointedoutthatpolylinewasdefineddifferentlyintwoplaces.
• FrankHeckerpointedoutanexercisethatwasunder-specified,andsomebrokenlinks.
• AnimeshBhelpedmecleanupaconfusingexample.
• MartinCaspersenfoundtworound-offerrors.
• GregorUlmsentseveralcorrectionsandsuggestions.
• DimitriosTsirigkassuggestedIclarifyanexercise.
• CarlosTafursentapageofcorrectionsandsuggestions.
• MartinNordslettenfoundabuginanexercisesolution.
• SvenHoexterpointedoutthatavariablenamedinputshadowsabuild-infunction.
• StephenGregorypointedouttheproblemwithcmpinPython3.
• IshwarBhatcorrectedmystatementofFermat’slasttheorem.
• Andrea Zanella translated the book into Italian, and sent a number of corrections along the way.
• Many, many thanks to Melissa Lewis and Luciano Ramalho for excellent comments and sug- gestions on the second edition.
• Thanks to Harry Percival from PythonAnywhere for his help getting people started running Python in a browser.
• XavierVanAubelmadeseveralusefulcorrectionsinthesecondedition.
• WilliamMurraycorrectedmydefinitionoffloordivision.
• PerStarbäckbroughtmeuptodateonuniversalnewlinesinPython3.
In addition, people who spotted typos or made corrections include Czeslaw Czapla, Dale Wil- son, Francesco Carlo Cimini, Richard Fursa, Brian McGhie, Lokesh Kumar Makani, Matthew Shultz, Viet Le, Victor Simeone, Lars O.D. Christensen, Swarup Sahoo, Alix Etienne, Kuang He, Wei Huang, Karen Barber, and Eric Ransom.
