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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def FormatContext(self):
 """Return a text string describing the context"""

    text = ''
    if hasattr(self, 'feed_name'):
      text += "In feed '%s': " % self.feed_name
    if hasattr(self, 'file_name'):
      text += self.file_name
    if hasattr(self, 'row_num'):
      text += ":%i" % self.row_num
    if hasattr(self, 'column_name'):
      text += " column %s" % self.column_name
    return text