scalar

I am new to programming. In my latest Python 2.7 project I encountered the following: RuntimeWarning: overflow encountered in long_scalars Could someone please elaborate what this means and what I could do to fix that? The code runs through, but I'm not sure if it is a good idea to just ignore the warning. It happens during an append process like: SomeList.append(VeryLongFormula) Here's an example which issues the same warning: import numpy as np np.seterr(all='warn') A = np.array([10]) a=A[-1] a**a yields RuntimeWarning: overflow encountered in long_scalars In the example above it happens

This may be a simple question, but I can not figure out how to do this. Lets say that I have two variables as follows. a = 2 b = 3 I want to construct a DataFrame from this: df2 = pd.DataFrame({'A':a,'B':b}) This generates an error: ValueError: If using all scalar values, you must pass an index I tried this also: df2 = (pd.DataFrame({'a':a,'b':b})).reset_index() This gives the same error message. The error message says that if you're passing scalar values, you have to pass an index. So you can either not use scalar values for the columns -- e.g. use a list: >>> df = pd.DataFrame({'A': [a], 'B'