code: def column(self, name):
          
          columns = self.columns()
          if name in columns:
              return columns.index(name)
          else:
              check = projex.text.underscore(name)
              for i, column in enumerate(columns):
                  if projex.text.underscore(column) == check:
                      return i
          return -1
docs: Returns the index of the column at the given name.
          
          :param      name | <str>
          
          :return     <int> (-1 if not found)