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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 _parse_line(cls, line):
 """ Helper method for parsing package line with or without SOS report information. Args: line (str):
 package line with or without SOS report information Returns: dict: dictionary containing 'name', 'version', 'release' and 'arch' keys plus additionally 'installtime', 'buildtime', 'vendor', 'buildserver', 'pgpsig', 'pgpsig_short' if these are present. """

        try:
            pkg, rest = line.split(None, 1)
        except ValueError:
            rpm = cls._parse_package(line.strip())
            return rpm
        rpm = cls._parse_package(pkg)
        rest = rest.split('\t')
        for i, value in enumerate(rest):
            rpm[cls.SOSREPORT_KEYS[i]] = value
        return rpm