arcgis desktop - Using degree symbol in Label Expressions of ArcMap?

I am trying to use the labeling process to display latitude and longitudes for a set of data points. To make the labels appear formal, I wish to add the degree symbol (°) to the labels. My python syntax goes as follows:

[lat] + "," +" " + [long] and the result is 30.392634, -91.118229.

However, when I attempt to insert the symbol as follows:

[lat] + "°" + "," +" " + [long] + "°" I keep receiving an error.

I am not a code wizard.