Many thanks for this quick answer. I unfortunatly misread the tutorial (edx Course CS1301xII, Computing in Python II: Control Structures) concerning scope insofar as a NameError arises if a variable is accessed which was not created inside the control structure. Marcus.
-----Ursprüngliche Nachricht----- Von: Tutor [mailto:tutor-bounces+marcus.luetolf=bluewin...@python.org] Im Auftrag von Alan Gauld via Tutor Gesendet: Samstag, 18. Mai 2019 12:34 An: tutor@python.org Betreff: Re: [Tutor] simple question about scope On 18/05/2019 09:20, marcus lütolf wrote: > in learning the principles of Python I came across scope in the > control structure's section. > There I read the notion that variables createted inside a control > structute can't be seen or accessed from outside that structure, > Python would raise a Name Error. I don't know which tutorial you are reading but that's just wrong. Names created inside functions are local to that function. Names created inside a module are local to that module (and rather confusingly referred to as global scope) Names created inside a class are local to that class. Names created inside a generator expression are local to that expression. That's pretty much all you need to know about python scoping. > However in for loops - also control structures - like in this simple > example: Control structures like for/while/if-else etc have no influence no name visibility. -- Alan G Author of the Learn to Program web site http://www.alan-g.me.uk/ http://www.amazon.com/author/alan_gauld Follow my photo-blog on Flickr at: http://www.flickr.com/photos/alangauldphotos _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
