def get(self, str_name):
column_array = self.data[:,self.cols[str_name]-<NUM_LIT:1>].astype('<STR_LIT:float>')<EOL>return column_array<EOL>
return a column of data with the name str_name.

Parameters
----------
str_name : string
    The name of the column as printed in history.data or
    star.log get the available columns from self.cols (where
    you replace self with the name of your instance