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Python

Python when we write python hello_world.py , everything is set but I get name error

Thanks for your help have a nice day you all.

Yes, if you could please give us a "walkthrough" of how you set everything.

Also, it is helpful to include a snippet of your code by copy/pasting it. But ensure you wrap the proper "back-ticks" around the code so it displays it correctly for us when you reply.

Use a similar example to format your snippet of code like that in the Markdown Cheatsheet just below the Text Area you use to write a reponse. :)