Name: [079] Lucas Holland
Member: 37 months
Authored: 58 videos
Description: Hey, I'm a geek just like you ;-) No, seriously I do have a real life... I enjoy programming, screencasting and spending time with my friends. I maintain a blog together with Marius at: http://www.monroebrothers.org ...

Name: [166] Marius Meinert
Member: 37 months
Authored: 31 videos
Description: ...

[144] Operatoren und Datentypen (5/14)

in series: Einführung in die Programmierung mit Python

video tutorial by Lucas Holland and Marius Meinert

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In dieser Episode geht es um Operatoren und Datentypen, die eine Grundlage für die weiteren Episoden bilden.


Uploaded on 7th February 2007, running time 10 minutes.

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4. anonymous Mon, 15 Jun 2009 04:45

Sehr ausführlich erläutert


Auf das Problem bin ich bisher noch nicht gestoßen, aber ein bisschen suchen in der Python-Dokumentation hat zu diesen beiden Seiten geführt:

http://www.python.org/doc/faq/general/#why-are-floating-point-calculations-so-inaccurate

http://docs.python.org/tutorial/floatingpoint

Grundsätzlich wird dort erklärt, dass das Problem in der Umrechnung der Binärdaten liegt und aus mathematisch-technischen Gründen die beste Möglichkeit "2.4" als float anzuzeigen die mit den vielen Nachkommastellen ist. Es scheint keine wirklich elegante Lösung zu geben, aber der zweite Link ist doch recht interessant.


Hallo. Danke schön für Tutorial. Ich habe eine Frage. Warum gibt es für float("2.4") ein 2.39999.. und nicht 2.40000 so wie wäre erwartet?.


3+5 =5 ???


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