docs: def col_strip(df,col_name,dest = False):
      """ Performs str.strip() a column of a DataFrame
      Parameters:
      df - DataFrame
          DataFrame to operate on
      col_name - string
          Name of column to strip
      dest - bool, default False
          Whether to apply the result to the DataFrame or return it.
          True is apply, False is return.
      """
      if dest:
          df[col_name] = df[col_name].str.strip()
      else:
          return df[col_name].str.strip()