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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 scope_to_list(scope):
 """Convert a space separated string to a list of scopes."""

    if isinstance(scope, (tuple, list, set)):
        return [unicode_type(s) for s in scope]
    elif scope is None:
        return None
    else:
        return scope.strip().split(" ")