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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 read(self, ifile):
 """ Reads an input header from an input file. The input header is read as a sequence of *<name>***:***<value>* pairs separated by a newline. The end of the input header is signalled by an empty line or an end-of-file. :param ifile: File-like object that supports iteration over lines. """

        name, value = None, None

        for line in ifile:
            if line == '\n':
                break
            item = line.split(':', 1)
            if len(item) == 2:
                # start of a new item
                if name is not None:
                    self[name] = value[:-1]  # value sans trailing newline
                name, value = item[0], urllib.parse.unquote(item[1])
            elif name is not None:
                # continuation of the current item
                value += urllib.parse.unquote(line)

        if name is not None: self[name] = value[:-1] if value[-1] == '\n' else value