... You can assign values in the loop using df.set_value: for i, row in df.iterrows(): ifor_val = something if <condition>: ifor_val = something_else df.set_value(i,'ifor',ifor_val) If you don't need the row values you could simply iterate over the indices...

... are just keys in a namespace dictionary where they are associated with a corresponding object. Ned Batchhelder explains this nicely in his blog post. Either way, objects only know their reference count; they don't know what those references are (variables, containers, or the Python internals). To...

Sorry I can't find a question answering this, I'm almost certain someone else has raised it before. 15 Answers ...

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