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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 _GetTypeFromScope(self, package, type_name, scope):
 """Finds a given type name in the current scope. Args: package: The package the proto should be located in. type_name: The name of the type to be found in the scope. scope: Dict mapping short and full symbols to message and enum types. Returns: The descriptor for the requested type. """

    if type_name not in scope:
      components = _PrefixWithDot(package).split('.')
      while components:
        possible_match = '.'.join(components + [type_name])
        if possible_match in scope:
          type_name = possible_match
          break
        else:
          components.pop(-1)
    return scope[type_name]