Do final alignment based on presence of <,>,^,0= in format string

Beginning to finalize the table-column alignment options for pprint in Table package.
Okay - I changed the str to col_str. I remember now why I had to put str() in the justify function. Upon importing the table library I get the following error:

        235 
        236         for i, col_str in enumerate(col_strs):
    --> 237             col_strs[i] = justify(col_str, col_width)
        238 
        239         return col_strs, outs['n_header']
    TypeError: descriptor 'rjust' requires a 'str' object but received a 'unicode'