Request: keys() method on dataFrame

[iandanforth]

Return a list of column names.

[changhiskhan]

The potential for confusion here is that Series has a keys() method and it returns the index.

What's the use case? Duck typing with dict?

[wesm]

I think it's pretty harmless; DataFrame already has .iteritems(), but of course Series.values is a property, not a function call, so duck-typing isn't 100% possible. But good enough, I suppose.

Note that list(df) is the same as what would be df.keys()

[iandanforth]

While learning Pandas this kind of method is useful to move from the well-understood dict structure to the more powerful DataFrame. As a pandas novice this kind of mental mapping would be much appreciated.